Release Notes¶

Note

Release notes for older versions can be found in the versioned documentation.

Airflow 3.0.1 (2025-05-12)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Improves the handling of value masking when setting Airflow variables for enhanced security (#43123)
Make entire task box clickable to select the task (#49299)
Vertically align task log header components in full screen mode (#49569)
Remove dag_code records with no serialized dag (#49478)
Clear out the dag_code and serialized_dag tables on 3.0 upgrade (#49563)
Remove extra slash so that the runs tab is selected (#49600)
Null out the scheduler_interval field on downgrade (#49583)
Logout functionality should respect base_url in api server (#49545)
Fix bug with showing invalid credentials on Login UI (#49556)
Fix Dag Code text selection when dark mode is enabled (#49649)
Bugfix: max_active_tis_per_dag is not respected by dynamically mapped tasks (#49708)
Fix infinite redirect caused by mistakenly setting token cookie as secure (#49721)
Better handle safe url redirects in login form for SimpleAuthManager (#49697)(#49866)
API: Add missing bundle_version to DagRun response (#49726)
Display bundle version in Dag details tab (#49787)
Fix gcp remote log module import in airflow local settings (#49788)
Bugfix: Grid view stops loading when there is a pending task to be expanded (#49772)
Treat single task_ids in xcom_pull the same as multiple when provided as part of a list (#49692)
UI: Auto refresh Home page stats (#49830)
UI: Error alert overflows out of the alert box (#49880)
Show backfill banner after creating a new backfill (#49666)
Mark DAGModel stale and associate bundle on import errors to aid migration from 2.10.5 (#49769)
Improve detection and handling of timed out DAG processor processes (#49868)
Fix editing port for connections (#50002)
Improve & Fix grid endpoint response time (#49969)
Update time duration format (#49914)
Fix Dashboard overflow and handle no status tasks (#49964)
Fix timezone setting for logical date input on Trigger Run form (#49662)
Help pip with avoiding resolution too deep issues in Python 3.12 (#49853)
Bugfix: backfill dry run does not use same timezone as create backfill (#49911)
Fix Edit Connection when connection is imported (#49989)
Bugfix: Filtering items from a mapped task is broken (#50011)
Fix Dashboard for queued DagRuns (#49961)
Fix backwards-compat import path for BashSensor (#49935)
Apply task group sorting based on webserver config in grid structure response (#49418)
Render custom map_index_template on task completion (#49809)
Fix ContinuousTimetable false triggering when last run ends in future (#45175)
Make Trigger Dag form warning more obvious (#49981)
Restore task hover and selection indicators in the Grid view (#50050)
Fix datetime validation for backfills (#50116)
Fix duration charts (#50094)
Fix DAG node selections (#50095)
UI: Fix date range field alignment (#50086)
Add auto-refresh for Stats (#50088)
UI: Fixes validation error and adds error indicator for Params form (#50127)
fix: wrap overflowing texts of asset events (#50173)
Add audit log extra to table and improve UX (#50100)
Handle map indexes for Mapped TaskGroup (#49996)
Do not use introspection in migration to fix offline SQL generation (#49873)
Fix operator extra links for mapped tasks (#50238)
Fix backfill form (#50249)(#50243)
UI: Fix operator overflow in graph (#50252)
UI: Pass mapIndex to clear the relevant task instances. (#50256)
Fix markdown rendering on dag docs (#50142)

Miscellaneous¶

Add STRAIGHT_JOIN prefix for MySQL query optimization in get_sorted_triggers (#46303)
Ensure sqlalchemy[asyncio] extra is in core deps (#49452)
Remove unused constant HANDLER_SUPPORTS_TRIGGERER (#49370)
Remove sort indicators on XCom table to avoid confusion (#49547)
Remove gitpython as a core dependency (#49537)
Bump @babel/runtime from 7.26.0 to 7.27.0 (#49479)
Add backwards compatibility shim for get_current_context (#49630)
AIP-38: enhance layout for RunBackfillForm (#49609)
AIP-38: merge Backfill and Trigger Dag Run (#49490)
Add count to Stats Cards in Dashboard (#49519)
Add auto-refresh to health section for live updates. (#49645)
Tweak Execution API OpenAPI spec to improve code Generation (#49700)
Stricter validation for backfill_id (#49691)(#49716)
Add SimpleAllAdminMiddleware to allow api usage without auth header in request (#49599)
Bump react-router and react-router-dom from 7.4.0 to 7.5.2 (#49742)
Remove reference to root_dag_id in dagbag and restore logic (#49668)
Fix a few SqlAlchemy deprecation warnings (#49477)
Make default execution server URL be relative to API Base URL (#49747)(#49782)
Common airflow.cfg files across all containers in default docker-compose.yaml (#49681)
Add redirects for old operators location to standard provider (#49776)
Bump packaging from 24.2 to 25.0 in /airflow-core (#49512)
Move some non-core dependencies to the apache-airflow meta package (#49846)
Add more lower-bind limits to address resolution too deep (#49860)
UI: Add counts to pool bar (#49894)
Add type hints for @task.kuberenetes_cmd (#46913)
Bump vite from 5.4.17 to 5.4.19 for Airflow UI (#49162)(#50074)
Add map_index filter option to GetTICount and GetTaskStates (#49818)
Add stats ui endpoint (#49985)
Add link to tag to filter dags associated with the tag (#49680)
Add keyboard shortcut for full screen and wrap in logs. (#50008)
Update graph node styling to decrease border width on tasks in UI (#50047) (#50073)
Allow non-string valid JSON values in Variable import. (#49844)
Bump min versions of crucial providers (#50076)
Add state attribute to RuntimeTaskInstance for easier ti.state access in Task Context (#50031)
Move SQS message queue to Amazon provider (#50057)
Execution API: Improve task instance logging with structlog context (#50120)
Add dag_run_conf to RunBackfillForm (#49763)
Refactor Dashboard to enhance layout (#50026)
Add the download button on the assets page (#50045)
Add dateInterval validation and error handling (#50072)
Add Task Instances [{map_index}] tab to mapped task details (#50085)
Add focus view on grid and graph on second click (#50125)
Add formatted extra to asset events (#50124)
Move webserver expose config to api section (#50209)

Doc Only Changes¶

Remove flask application configuration from docs for AF3 (#49393)
Docker compose: airflow-cli to depend on airflow common services (#49318)
Better upgrade docs about flask/fab plugins in Airflow 3 (#49632)(#49614)(#49628)
Various Airflow 3.0 Release notes & Updating guide docs updates (#49623)(#49401)(#49654)(#49663)(#49988)(#49954)(#49840)(#50195)(#50264)
Add using the rest api by referring to security/api.rst (#49675)
Add correct redirects for rest api and upgrade docs (#49764)
Update max_consecutive_failed_dag_runs default value to zero in TaskSDK dag (#49795) (#49803)
Fix spacing issues in params example dag (example_params_ui_tutorial) (#49905)
Doc: Fix Kubernetes duplicated version in maintenance policy (#50030)
Fix links to source examples in Airflow docs (#50082)
Update ruff instructions for migration checks (#50232)
Fix example of backfill command (#50222)
Update docs for running behind proxy for Content-Security-Policy (#50236)

We are proud to announce the General Availability of Apache Airflow 3.0 — the most significant release in the project’s history. This version introduces a service-oriented architecture, a stable DAG authoring interface, expanded support for event-driven and ML workflows, and a fully modernized UI built on React. Airflow 3.0 reflects years of community investment and lays the foundation for the next era of scalable, modular orchestration.

Highlights¶

Service-Oriented Architecture: A new Task Execution API and airflow api-server enable task execution in remote environments with improved isolation and flexibility (AIP-72).
Edge Executor: A new executor that supports distributed, event-driven, and edge-compute workflows (AIP-69), now generally available.
Stable Authoring Interface: DAG authors should now use the new airflow.sdk namespace to import core DAG constructs like @dag, @task, and DAG.
Scheduler-Managed Backfills: Backfills are now scheduled and tracked like regular DAG runs, with native UI and API support (AIP-78).
DAG Versioning: Airflow now tracks structural changes to DAGs over time, enabling inspection of historical DAG definitions via the UI and API (AIP-66).
Asset-Based Scheduling: The dataset model has been renamed and redesigned as assets, with a new @asset decorator and cleaner event-driven DAG definition (AIP-74, AIP-75).
Support for ML and AI Workflows: DAGs can now run with logical_date=None, enabling use cases such as model inference, hyperparameter tuning, and non-interval workflows (AIP-83).
Removal of Legacy Features: SLAs, SubDAGs, DAG and Xcom pickling, and several internal context variables have been removed. Use the upgrade tools to detect deprecated usage.
Split CLI and API Changes: The CLI has been split into airflow and airflowctl (AIP-81), and REST API now defaults to logical_date=None when triggering a new DAG run.
Modern React UI: A complete UI overhaul built on React and FastAPI includes version-aware views, backfill management, and improved DAG and task introspection (AIP-38, AIP-84).
Migration Tooling: Use ruff and airflow config update to validate DAGs and configurations. Upgrade requires Airflow 2.7 or later and Python 3.9–3.12.

Significant Changes¶

Airflow 3.0 introduces the most significant set of changes since the 2.0 release, including architectural shifts, new execution models, and improvements to DAG authoring and scheduling.

Task Execution API & Task SDK (AIP-72)¶

Airflow now supports a service-oriented architecture, enabling tasks to be executed remotely via a new Task Execution API. This API decouples task execution from the scheduler and introduces a stable contract for running tasks outside of Airflow’s traditional runtime environment.

To support this, Airflow introduces the Task SDK — a lightweight runtime environment for running Airflow tasks in external systems such as containers, edge environments, or other runtimes. This lays the groundwork for language-agnostic task execution and brings improved isolation, portability, and extensibility to Airflow-based workflows.

Airflow 3.0 also introduces a new airflow.sdk namespace that exposes the core authoring interfaces for defining DAGs and tasks. DAG authors should now import objects like DAG, @dag, and @task from airflow.sdk rather than internal modules. This new namespace provides a stable, forward-compatible interface for DAG authoring across future versions of Airflow.

Edge Executor (AIP-69)¶

Airflow 3.0 introduces the Edge Executor as a generally available feature, enabling execution of tasks in distributed or remote compute environments. Designed for event-driven and edge-compute use cases, the Edge Executor integrates with the Task Execution API to support task orchestration beyond the traditional Airflow runtime. This advancement facilitates hybrid and cross-environment orchestration patterns, allowing task workers to operate closer to data or application layers.

Scheduler-Managed Backfills (AIP-78)¶

Backfills are now fully managed by the scheduler, rather than being launched as separate command-line jobs. This change unifies backfill logic with regular DAG execution and ensures that backfill runs follow the same scheduling, versioning, and observability models as other DAG runs.

Airflow 3.0 also introduces native UI and REST API support for initiating and monitoring backfills, making them more accessible and easier to integrate into automated workflows. These improvements lay the foundation for smarter, safer historical reprocessing — now available directly through the Airflow UI and API.

DAG Versioning (AIP-66)¶

Airflow 3.0 introduces native DAG versioning. DAG structure changes (e.g., renamed tasks, dependency shifts) are now tracked directly in the metadata database. This allows users to inspect historical DAG structures through the UI and API, and lays the foundation for safer backfills, improved observability, and runtime-determined DAG logic.

React UI Rewrite (AIP-38, AIP-84)¶

Airflow 3.0 ships with a completely redesigned user interface built on React and FastAPI. This modern architecture improves responsiveness, enables more consistent navigation across views, and unlocks new UI capabilities — including support for DAG versioning, asset-centric DAG definitions, and more intuitive filtering and search.

The new UI replaces the legacy Flask-based frontend and introduces a foundation for future extensibility and community contributions.

Asset-Based Scheduling & Terminology Alignment (AIP-74, AIP-75)¶

The concept of Datasets has been renamed to Assets, unifying terminology with common practices in the modern data ecosystem. The internal model has also been reworked to better support future features like asset partitions and validations.

The @asset decorator and related changes to the DAG parser enable clearer, asset-centric DAG definitions, allowing Airflow to more naturally support event-driven and data-aware scheduling patterns.

This renaming impacts modules, classes, functions, configuration keys, and internal models. Key changes include:

Dataset → Asset
DatasetEvent → AssetEvent
DatasetAlias → AssetAlias
airflow.datasets.* → airflow.sdk.*
airflow.timetables.simple.DatasetTriggeredTimetable → airflow.timetables.simple.AssetTriggeredTimetable
airflow.timetables.datasets.DatasetOrTimeSchedule → airflow.timetables.assets.AssetOrTimeSchedule
airflow.listeners.spec.dataset.on_dataset_created → airflow.listeners.spec.asset.on_asset_created
airflow.listeners.spec.dataset.on_dataset_changed → airflow.listeners.spec.asset.on_asset_changed
core.dataset_manager_class → core.asset_manager_class
core.dataset_manager_kwargs → core.asset_manager_kwargs

Unified Scheduling Field¶

Airflow 3.0 removes the legacy schedule_interval and timetable parameters. DAGs must now use the unified schedule field for all time- and event-based scheduling logic. This simplifies DAG definition and improves consistency across scheduling paradigms.

Updated Scheduling Defaults¶

Airflow 3.0 changes the default behavior for new DAGs by setting catchup_by_default = False in the configuration file. This means DAGs that do not explicitly set catchup=... will no longer backfill missed intervals by default. This change reduces confusion for new users and better reflects the growing use of on-demand and event-driven workflows.

The default DAG schedule has been changed to None from @once.

Restricted Metadata Database Access¶

Task code can no longer directly access the metadata database. Interactions with DAG state, task history, or DAG runs must be performed via the Airflow REST API or exposed context. This change improves architectural separation and enables remote execution.

Future Logical Dates No Longer Supported¶

Airflow no longer supports triggering DAG runs with a logical date in the future. This change aligns with the logical execution model and removes ambiguity in backfills and event-driven DAGs. Use logical_date=None to trigger runs with the current timestamp.

Context Behavior for Asset and Manually Triggered DAGs¶

For DAG runs triggered by an Asset event or through the REST API without specifying a logical_date, Airflow now sets logical_date=None by default. These DAG runs do not have a data interval, and attempting to access data_interval_start, data_interval_end, or logical_date from the task context will raise a KeyError.

DAG authors should use dag_run.logical_date and perform appropriate checks or fallbacks if supporting multiple trigger types. This change improves consistency with event-driven semantics but may require updates to existing DAGs that assume these values are always present.

Improved Callback Behavior¶

Airflow 3.0 refines task callback behavior to improve clarity and consistency. In particular, on_success_callback is no longer executed when a task is marked as SKIPPED, aligning it more closely with expected semantics.

Updated Default Configuration¶

Several default configuration values have been updated in Airflow 3.0 to better reflect modern usage patterns and simplify onboarding:

catchup_by_default is now set to False by default. DAGs will not automatically backfill unless explicitly configured to do so.
create_cron_data_intervals is now set to False by default. As a result, cron expressions will be interpreted using the CronTriggerTimetable instead of the legacy CronDataIntervalTimetable.
SimpleAuthManager is now the default auth_manager. To continue using Flask AppBuilder-based authentication, install the apache-airflow-providers-flask-appbuilder provider and explicitly set auth_manager = airflow.providers.fab.auth_manager.FabAuthManager.

These changes represent the most significant evolution of the Airflow platform since the release of 2.0 — setting the stage for more scalable, event-driven, and language-agnostic orchestration in the years ahead.

Executor & Scheduler Updates¶

Airflow 3.0 introduces several important improvements and behavior changes in how DAGs and tasks are scheduled, prioritized, and executed.

Standalone DAG Processor Required¶

Airflow 3.0 now requires the standalone DAG processor to parse DAGs. This dedicated process improves scheduler performance, isolation, and observability. It also simplifies architecture by clearly separating DAG parsing from scheduling logic. This change may affect custom deployments that previously used embedded DAG parsing.

Priority Weight Capped by Pool Slots¶

The priority_weight value on a task is now capped by the number of available pool slots. This ensures that resource availability remains the primary constraint in task execution order, preventing high-priority tasks from starving others when resource contention exists.

Teardown Task Handling During DAG Termination¶

Teardown tasks will now be executed even when a DAG run is terminated early. This ensures that cleanup logic is respected, improving reliability for workflows that use teardown tasks to manage ephemeral infrastructure, temporary files, or downstream notifications.

Improved Scheduler Fault Tolerance¶

Scheduler components now use run_with_db_retries to handle transient database issues more gracefully. This enhances Airflow’s fault tolerance in high-volume environments and reduces the likelihood of scheduler restarts due to temporary database connection problems.

Mapped Task Stats Accuracy¶

Airflow 3.0 fixes a bug that caused incorrect task statistics to be reported for dynamic task mapping. Stats now accurately reflect the number of mapped task instances and their statuses, improving observability and debugging for dynamic workflows.

`SequentialExecutor` has been removed¶

SequentialExecutor was primarily used for local testing but is now redundant, as LocalExecutor supports SQLite with WAL mode and provides better performance with parallel execution. Users should switch to LocalExecutor or CeleryExecutor as alternatives.

DAG Authoring Enhancements¶

Airflow 3.0 includes several changes that improve consistency, clarity, and long-term stability for DAG authors.

New Stable DAG Authoring Interface: `airflow.sdk`¶

Airflow 3.0 introduces a new, stable public API for DAG authoring under the airflow.sdk namespace, available via the apache-airflow-task-sdk package.

The goal of this change is to decouple DAG authoring from Airflow internals (Scheduler, API Server, etc.), providing a forward-compatible, stable interface for writing and maintaining DAGs across Airflow versions.

DAG authors should now import core constructs from airflow.sdk rather than internal modules.

Key Imports from airflow.sdk:

Classes:
- Asset
- BaseNotifier
- BaseOperator
- BaseOperatorLink
- BaseSensorOperator
- Connection
- Context
- DAG
- EdgeModifier
- Label
- ObjectStoragePath
- Param
- TaskGroup
- Variable
Decorators and Functions:
- @asset
- @dag
- @setup
- @task
- @task_group
- @teardown
- chain
- chain_linear
- cross_downstream
- get_current_context
- get_parsing_context

For an exhaustive list of available classes, decorators, and functions, check airflow.sdk.__all__.

All DAGs should update imports to use airflow.sdk instead of referencing internal Airflow modules directly. Legacy import paths (e.g., airflow.models.dag.DAG, airflow.decorator.task) are deprecated and will be removed in a future Airflow version. Some additional utilities and helper functions that DAGs sometimes use from airflow.utils.* and others will be progressively migrated to the Task SDK in future minor releases.

These future changes aim to complete the decoupling of DAG authoring constructs from internal Airflow services. DAG authors should expect continued improvements to airflow.sdk with no backwards-incompatible changes to existing constructs.

For example, update:

# Old (Airflow 2.x)
from airflow.models import DAG
from airflow.decorators import task

# New (Airflow 3.x)
from airflow.sdk import DAG, task

Renamed Parameter: `fail_stop` → `fail_fast`¶

The DAG argument fail_stop has been renamed to fail_fast for improved clarity. This parameter controls whether a DAG run should immediately stop execution when a task fails. DAG authors should update any code referencing fail_stop to use the new name.

Context Cleanup and Parameter Removal¶

Several legacy context variables have been removed or may no longer be available in certain types of DAG runs, including:

conf
execution_date
dag_run.external_trigger

In asset-triggered and manually triggered DAG runs with logical_date=None, data interval fields such as data_interval_start and data_interval_end may not be present in the task context. DAG authors should use explicit references such as dag_run.logical_date and conditionally check for the presence of interval-related fields where applicable.

Task Context Utilities Moved¶

Internal task context functions such as get_parsing_context have been moved to a more appropriate location (e.g., airflow.models.taskcontext). DAG authors using these utilities directly should update import paths accordingly.

Trigger Rule Restrictions¶

The TriggerRule.ALWAYS rule can no longer be used with teardown tasks or tasks that are expected to honor upstream dependency semantics. DAG authors should ensure that teardown logic is defined with the appropriate trigger rules for consistent task resolution behavior.

Asset Aliases for Reusability¶

A new utility function, create_asset_aliases(), allows DAG authors to define reusable aliases for frequently referenced Assets. This improves modularity and reuse across DAG files and is particularly helpful for teams adopting asset-centric DAGs.

Operator Links interface changed¶

The Operator Extra links, which can be defined either via plugins or custom operators now do not execute any user code in the Airflow UI, but instead push the “full” links to XCom backend and the link is fetched from the XCom backend when viewing task details, for example from grid view.

Example for users with custom links class:

@attr.s(auto_attribs=True)
class CustomBaseIndexOpLink(BaseOperatorLink):
    """Custom Operator Link for Google BigQuery Console."""

    index: int = attr.ib()

    @property
    def name(self) -> str:
        return f"BigQuery Console #{self.index + 1}"

    @property
    def xcom_key(self) -> str:
        return f"bigquery_{self.index + 1}"

    def get_link(self, operator, *, ti_key):
        search_queries = XCom.get_one(
            task_id=ti_key.task_id, dag_id=ti_key.dag_id, run_id=ti_key.run_id, key="search_query"
        )
        return f"https://console.cloud.google.com/bigquery?j={search_query}"

The link has an xcom_key defined, which is how it will be stored in the XCOM backend, with key as xcom_key and value as the entire link, this case: https://console.cloud.google.com/bigquery?j=search

Plugins no longer support adding executors, operators & hooks¶

Operator (including Sensors), Executors & Hooks can no longer be registered or imported via Airflow’s plugin mechanism. These types of classes are just treated as plain Python classes by Airflow, so there is no need to register them with Airflow. They can be imported directly from their respective provider packages.

Before:

from airflow.hooks.my_plugin import MyHook

You should instead import it as:

from my_plugin import MyHook

Support for ML & AI Use Cases (AIP-83)¶

Airflow 3.0 expands the types of DAGs that can be expressed by removing the constraint that each DAG run must correspond to a unique data interval. This change, introduced in AIP-83, enables support for workflows that don’t operate on a fixed schedule — such as model training, hyperparameter tuning, and inference tasks.

These ML- and AI-oriented DAGs often run ad hoc, are triggered by external systems, or need to execute multiple times with different parameters over the same dataset. By allowing multiple DAG runs with logical_date=None, Airflow now supports these scenarios natively without requiring workarounds.

Config & Interface Changes¶

Airflow 3.0 introduces several configuration and interface updates that improve consistency, clarify ownership of core utilities, and remove legacy behaviors that were no longer aligned with modern usage patterns.

Default Value Handling¶

Airflow no longer silently updates configuration options that retain deprecated default values. Users are now required to explicitly set any config values that differ from the current defaults. This change improves transparency and prevents unintentional behavior changes during upgrades.

Refactored Config Defaults¶

Several configuration defaults have changed in Airflow 3.0 to better reflect modern usage patterns:

The default value of catchup_by_default is now False. DAGs will not backfill missed intervals unless explicitly configured to do so.
The default value of create_cron_data_intervals is now False. Cron expressions are now interpreted using the CronTriggerTimetable instead of the legacy CronDataIntervalTimetable. This change simplifies interval logic and aligns with the future direction of Airflow’s scheduling system.

Refactored Internal Utilities¶

Several core components have been moved to more intuitive or stable locations:

The SecretsMasker class has been relocated to airflow.sdk.execution_time.secrets_masker.
The ObjectStoragePath utility previously located under airflow.io is now available via airflow.sdk.

These changes simplify imports and reflect broader efforts to stabilize utility interfaces across the Airflow codebase.

Improved `inlet_events`, `outlet_events`, and `triggering_asset_events`¶

Asset event mappings in the task context are improved to better support asset use cases, including new features introduced in AIP-74.

Events of an asset or asset alias are now accessed directly by a concrete object to avoid ambiguity. Using a str to access events is no longer supported. Use an Asset or AssetAlias object, or Asset.ref to refer to an entity explicitly instead, such as:

outlet_events[Asset.ref(name="myasset")]  # Get events for asset named "myasset".
outlet_events[AssetAlias(name="myalias")]  # Get events for asset alias named "myalias".

Alternatively, two helpers for_asset and for_asset_alias are added as shortcuts:

outlet_events.for_asset(name="myasset")  # Get events for asset named "myasset".
outlet_events.for_asset_alias(name="myalias")  # Get events for asset alias named "myalias".

The internal representation of asset event triggers now also includes an explicit uri field, simplifying traceability and aligning with the broader asset-aware execution model introduced in Airflow 3.0. DAG authors interacting directly with inlet_events may need to update logic that assumes the previous structure.

Behaviour change in `xcom_pull`¶

In Airflow 2, the xcom_pull() method allowed pulling XComs by key without specifying task_ids, despite the fact that the underlying DB model defines task_id as part of the XCom primary key. This created ambiguity: if two tasks pushed XComs with the same key, xcom_pull() would pull whichever one happened to be first, leading to unpredictable behavior.

Airflow 3 resolves this inconsistency by requiring task_ids when pulling by key. This change aligns with the task-scoped nature of XComs as defined by the schema, ensuring predictable and consistent behavior.

DAG Authors should update their dags to use task_ids if their dags used xcom_pull without task_ids such as:

kwargs["ti"].xcom_pull(key="key")

Should be updated to:

kwargs["ti"].xcom_pull(task_ids="task1", key="key")

Removed Configuration Keys¶

As part of the deprecation cleanup, several legacy configuration options have been removed. These include:

[scheduler] allow_trigger_in_future
[scheduler] use_job_schedule
[scheduler] use_local_tz
[scheduler] processor_poll_interval
[logging] dag_processor_manager_log_location
[logging] dag_processor_manager_log_stdout
[logging] log_processor_filename_template

All the webserver configurations have also been removed since API server now replaces webserver, so the configurations like below have no effect:

[webserver] allow_raw_html_descriptions
[webserver] cookie_samesite
[webserver] error_logfile
[webserver] access_logformat
[webserver] web_server_master_timeout
etc

Several configuration options previously located under the [webserver] section have been moved to the new ``[api]`` section. The following configuration keys have been moved:

[webserver] web_server_host → [api] host
[webserver] web_server_port → [api] port
[webserver] workers → [api] workers
[webserver] web_server_worker_timeout → [api] worker_timeout
[webserver] web_server_ssl_cert → [api] ssl_cert
[webserver] web_server_ssl_key → [api] ssl_key
[webserver] access_logfile → [api] access_logfile

Users should review their airflow.cfg files or use the airflow config lint command to identify outdated or removed options.

Upgrade Tooling¶

Airflow 3.0 includes improved support for upgrade validation. Use the following tools to proactively catch incompatible configs or deprecated usage patterns:

airflow config lint: Identifies removed or invalid config keys
ruff check --select AIR30 --preview: Flags removed interfaces and common migration issues

CLI & API Changes¶

Airflow 3.0 introduces changes to both the CLI and REST API interfaces to better align with service-oriented deployments and event-driven workflows.

Split CLI Architecture (AIP-81)¶

The Airflow CLI has been split into two distinct interfaces:

The core airflow CLI now handles only local functionality (e.g., airflow tasks test, airflow dags list).
Remote functionality, including triggering DAGs or managing connections in service-mode environments, is now handled by a separate CLI called airflowctl, distributed via the apache-airflow-client package.

This change improves security and modularity for deployments that use Airflow in a distributed or API-first context.

REST API v2 replaces v1¶

The legacy REST API v1, previously built with Connexion and Marshmallow, has been replaced by a modern FastAPI-based REST API v2.

This new implementation improves performance, aligns more closely with web standards, and provides a consistent developer experience across the API and UI.

Key changes include stricter validation (422 errors instead of 400), the removal of the execution_date parameter in favor of logical_date, and more consistent query parameter handling.

The v2 API is now the stable, fully supported interface for programmatic access to Airflow, and also powers the new UI - achieving full feature parity between the UI and API.

For details, see the Airflow REST API v2 documentation.

REST API: DAG Trigger Behavior Updated¶

The behavior of the POST /dags/{dag_id}/dagRuns endpoint has changed. If a logical_date is not explicitly provided when triggering a DAG via the REST API, it now defaults to None.

This aligns with event-driven DAGs and manual runs in Airflow 3.0, but may break backward compatibility with scripts or tools that previously relied on Airflow auto-generating a timestamped logical_date.

Removed CLI Flags and Commands¶

Several deprecated CLI arguments and commands that were marked for removal in earlier versions have now been cleaned up in Airflow 3.0. Run airflow --help to review the current set of available commands and arguments.

Deprecated --ignore-depends-on-past cli option is replaced by --depends-on-past ignore.
--tree flag for airflow tasks list command is removed. The format of the output with that flag can be expensive to generate and extremely large, depending on the DAG. airflow dag show is a better way to visualize the relationship of tasks in a DAG.
Changing dag_id from flag (-d, --dag-id) to a positional argument in the dags list-runs CLI command.
The airflow db init and airflow db upgrade commands have been removed. Use airflow db migrate instead to initialize or migrate the metadata database. If you would like to create default connections use airflow connections create-default-connections.
airflow api-server has replaced airflow webserver cli command.

Provider Refactor & Standardization¶

Airflow 3.0 completes the migration of several core operators, sensors, and hooks into the new apache-airflow-providers-standard package. This package now includes commonly used components such as:

PythonOperator
BashOperator
EmailOperator
SimpleHttpOperator
ShortCircuitOperator

These operators were previously bundled inside airflow-core but are now treated as provider-managed components to improve modularity, testability, and lifecycle independence.

This change enables more consistent versioning across providers and prepares Airflow for a future where all integrations — including “standard” ones — follow the same interface model.

To maintain compatibility with existing DAGs, the apache-airflow-providers-standard package is installable on both Airflow 2.x and 3.x. Users upgrading from Airflow 2.x are encouraged to begin updating import paths and testing provider installation in advance of the upgrade.

Legacy imports such as airflow.operators.python.PythonOperator are deprecated and will be removed soon. They should be replaced with:

from airflow.providers.standard.operators.python import PythonOperator

UI & Usability Improvements¶

Airflow 3.0 introduces a modernized user experience that complements the new React-based UI architecture (see Significant Changes). Several areas of the interface have been enhanced to improve visibility, consistency, and navigability.

New Home Page¶

The Airflow Home page now provides a high-level operational overview of your environment. It includes health checks for core components (Scheduler, Triggerer, DAG Processor), summary stats for DAG and task instance states, and a real-time feed of asset-triggered events. This view helps users quickly identify pipeline health, recent activity, and potential failures.

Unified DAG List View¶

The DAG List page has been refreshed with a cleaner layout and improved responsiveness. Users can browse DAGs by name, tags, or owners. While full-text search has not yet been integrated, filters and navigation have been refined for clarity in large deployments.

Version-Aware Graph and Grid Views¶

The Graph and Grid views now display task information in the context of the DAG version that was used at runtime. This improves traceability for DAGs that evolve over time and provides more accurate debugging of historical runs.

Expanded DAG Graph Visualization¶

The Graph view now supports visualizing the full chain of asset and task dependencies, including assets consumed or produced across DAG boundaries. This allows users to inspect upstream and downstream lineage in a unified view, making it easier to trace data flows, debug triggering behavior, and understand conditional dependencies between assets and tasks.

DAG Code View¶

The “Code” tab now displays the exact DAG source as parsed by the scheduler for the selected DAG version. This allows users to inspect the precise code that was executed, even for historical runs, and helps debug issues related to versioned DAG changes.

Improved Task Log Access¶

Task log access has been streamlined across views. Logs are now easier to access from both the Grid and Task Instance pages, with cleaner formatting and reduced visual noise.

Enhanced Asset and Backfill Views¶

New UI components support asset-centric DAGs and backfill workflows:

Asset definitions are now visible from the DAG details page, allowing users to inspect upstream and downstream asset relationships.
Backfills can be triggered and monitored directly from the UI, including support for scheduler-managed backfills introduced in Airflow 3.0.

These improvements make Airflow more accessible to operators, data engineers, and stakeholders working across both time-based and event-driven workflows.

Deprecations & Removals¶

A number of deprecated features, modules, and interfaces have been removed in Airflow 3.0, completing long-standing migrations and cleanups.

Users are encouraged to review the following removals to ensure compatibility:

SubDag support has been removed entirely, including the SubDagOperator, related CLI and API interfaces. TaskGroups are now the recommended alternative for nested DAG structures.
SLAs have been removed: The legacy SLA feature, including SLA callbacks and metrics, has been removed. A more flexible replacement mechanism, DeadlineAlerts, is planned for a future version of Airflow. Users who relied on SLA-based notifications should consider implementing custom alerting using task-level success/failure hooks or external monitoring integrations.
Pickling support has been removed: All legacy features related to DAG pickling have been fully removed. This includes the PickleDag CLI/API, as well as implicit behaviors around store_serialized_dags = False. DAGs must now be serialized using the JSON-based serialization system. Ensure any custom Python objects used in DAGs are JSON-serializable.
Context parameter cleanup: Several previously available context variables have been removed from the task execution context, including conf, execution_date, and dag_run.external_trigger. These values are either no longer applicable or have been renamed (e.g., use dag_run.logical_date instead of execution_date). DAG authors should ensure that templated fields and Python callables do not reference these deprecated keys.
Deprecated core imports have been fully removed. Any use of airflow.operators.*, airflow.hooks.*, or similar legacy import paths should be updated to import from their respective providers.
Configuration cleanup: Several legacy config options have been removed, including:
- scheduler.allow_trigger_in_future: DAG runs can no longer be triggered with a future logical date. Use logical_date=None instead.
- scheduler.use_job_schedule and scheduler.use_local_tz have also been removed. These options were deprecated and no longer had any effect.
Deprecated utility methods such as those in airflow.utils.helpers, airflow.utils.process_utils, and airflow.utils.timezone have been removed. Equivalent functionality can now be found in the standard Python library or Airflow provider modules.
Removal of deprecated CLI flags and behavior: Several CLI entrypoints and arguments that were marked for removal in earlier versions have been cleaned up.

To assist with the upgrade, tools like ruff (e.g., rule AIR302) and airflow config lint can help identify obsolete imports and configuration keys. These utilities are recommended for locating and resolving common incompatibilities during migration. Please see Upgrade Guide for more information.

Summary of Removed Features¶

The following table summarizes user-facing features removed in 3.0 and their recommended replacements. Not all of these are called out individually above.

Feature	Replacement / Notes
SubDagOperator / SubDAGs	Use TaskGroups
SLA callbacks / metrics	Deadline Alerts (planned post-3.0)
DAG Pickling	Use JSON serialization; pickling is no longer supported
Xcom Pickling	Use custom Xcom backend; pickling is no longer supported
`execution_date` context var	Use `dag_run.logical_date`
`conf` and `dag_run.external_trigger`	Removed from context; use DAG params or `dag_run` APIs
Core `EmailOperator`	Use `EmailOperator` from the `smtp` provider
`none_failed_or_skipped` rule	Use `none_failed_min_one_success`
`dummy` trigger rule	Use `always`
`fail_stop` argument	Use `fail_fast`
`store_serialized_dags=False`	DAGs are always serialized; config has no effect
Deprecated core imports	Import from appropriate provider package
`SequentialExecutor` & `DebugExecutor`	Use LocalExecutor for testing
`.airflowignore` regex	Uses glob syntax by default

Migration Tooling & Upgrade Process¶

Airflow 3 was designed with migration in mind. Many Airflow 2 DAGs will work without changes, especially if deprecation warnings were addressed in earlier releases. To support the upgrade, Airflow 3 includes validation tools such as ruff and airflow config update, as well as a simplified startup model.

For a step-by-step upgrade process, see the Upgrade Guide.

Minimum Supported Versions¶

To upgrade to Airflow 3.0, you must be running Airflow 2.7 or later.

Airflow 3.0 supports the following Python versions:

Python 3.9
Python 3.10
Python 3.11
Python 3.12

Earlier versions of Airflow or Python are not supported due to architectural changes and updated dependency requirements.

DAG Compatibility Checks¶

Airflow now includes a Ruff-based linter with custom rules to detect DAG patterns and interfaces that are no longer compatible with Airflow 3.0. These checks are packaged under the AIR30x rule series. Example usage:

ruff check dags/ --select AIR301  --preview
ruff check dags/ --select AIR301 --fix  --preview

These checks can automatically fix many common issues such as renamed arguments, removed imports, or legacy context variable usage.

Configuration Migration¶

Airflow 3.0 introduces a new utility to validate and upgrade your Airflow configuration file:

airflow config update
airflow config update --fix

This utility detects removed or deprecated configuration options and, if desired, updates them in-place.

Additional validation is available via:

airflow config lint

This command surfaces obsolete configuration keys and helps align your environment with Airflow 3.0 requirements.

Metadata Database Upgrade¶

As with previous major releases, the Airflow 3.0 upgrade includes schema changes to the metadata database. Before upgrading, it is strongly recommended that you back up your database and optionally run:

airflow db clean

to remove old task instance, log, or XCom data. To apply the new schema:

airflow db migrate

Startup Behavior Changes¶

Airflow components are now started explicitly. For example:

airflow api-server        # Replaces airflow webserver
airflow dag-processor     # Required in all environments

These changes reflect Airflow’s new service-oriented architecture.

Resources¶

Airflow 3.0 represents more than a year of collaboration across hundreds of contributors and dozens of organizations. We thank everyone who helped shape this release through design discussions, code contributions, testing, documentation, and community feedback. For full details, migration guidance, and upgrade best practices, refer to the official Upgrade Guide and join the conversation on the Airflow dev and user mailing lists.

Airflow 2.11.0 (2025-05-20)¶

Significant Changes¶

`DeltaTriggerTimetable` for trigger-based scheduling (#47074)¶

This change introduces DeltaTriggerTimetable, a new built-in timetable that complements the existing suite of Airflow timetables by supporting delta-based trigger schedules without relying on data intervals.

Airflow currently has two major types of timetables:

Data interval-based (e.g., CronDataIntervalTimetable, DeltaDataIntervalTimetable)
Trigger-based (e.g., CronTriggerTimetable)

However, there was no equivalent trigger-based option for delta intervals like timedelta(days=1). As a result, even simple schedules like schedule=timedelta(days=1) were interpreted through a data interval lens—adding unnecessary complexity for users who don’t care about upstream/downstream data dependencies.

This feature is backported to Airflow 2.11.0 to help users begin transitioning before upgrading to Airflow 3.0.

In Airflow 2.11, schedule=timedelta(...) still defaults to DeltaDataIntervalTimetable.

A new config option [scheduler] create_delta_data_intervals (default: True) allows opting in to DeltaTriggerTimetable.

In Airflow 3.0, this config defaults to False, meaning DeltaTriggerTimetable becomes the default for timedelta schedules.

By flipping this config in 2.11, users can preview and adopt the new scheduling behavior in advance — minimizing surprises during upgrade.

Consistent timing metrics across all backends (#39908, #43966)¶

Previously, Airflow reported timing metrics in milliseconds for StatsD but in seconds for other backends such as OpenTelemetry and Datadog. This inconsistency made it difficult to interpret or compare timing metrics across systems.

Airflow 2.11 introduces a new config option:

[metrics] timer_unit_consistency (default: False in 2.11, True and dropped in Airflow 3.0).

When enabled, all timing metrics are consistently reported in milliseconds, regardless of the backend.

This setting has become mandatory and always True in Airflow 3.0 (the config will be removed), so enabling it in 2.11 allows users to migrate early and avoid surprises during upgrade.

Ease migration to Airflow 3¶

This release introduces several changes to help users prepare for upgrading to Airflow 3:

All models using execution_date now also include a logical_date field. Airflow 3 drops execution_date entirely in favor of logical_date (#44283)

Added airflow config lint and airflow config update commands in 2.11 to help audit and migrate configs for Airflow 3.0. (#45736, #50353, #46757)

Python 3.8 support removed¶

Support for Python 3.8 has been removed, as it has reached end-of-life. Airflow 2.11 requires Python 3.9, 3.10, 3.11, or 3.12.

New Features¶

Introduce DeltaTriggerTimetable (#47074)
Backport airflow config update and airflow config lint changes to ease migration to Airflow 3 (#45736, #50353)
Add link to show task in a DAG in DAG Dependencies view (#47721)
Align timers and timing metrics (ms) across all metrics loggers (#39908, #43966)

Bug Fixes¶

Don’t resolve path for DAGs folder (#46877)
Fix ti.log_url timestamp format from "%Y-%m-%dT%H:%M:%S%z" to "%Y-%m-%dT%H:%M:%S.%f%z" (#50306)
Ensure that the generated airflow.cfg contains a random fernet_key and secret_key (#47755)
Fixed setting rendered_map_index via internal api (#49057)
Store rendered_map_index from TaskInstancePydantic into TaskInstance (#48571)
Allow using log_url property on TaskInstancePydantic (Internal API) (#50560)
Fix Trigger Form with Empty Object Default (#46872)
Fix TypeError when deserializing task with execution_timeout set to None (#46822)
Always populate mapped tasks (#46790)
Ensure check_query_exists returns a bool (#46707)
UI: /xcom/list got exception when applying filter on the value column (#46053)
Allow to set note field via the experimental internal api (#47769)

Miscellaneous¶

Add logical_date to models using execution_date (#44283)
Drop support for Python 3.8 (#49980, #50015)
Emit warning for deprecated BaseOperatorLink.get_link signature (#46448)

Doc Only Changes¶

Unquote executor airflow.cfg variable (#48084)
Update XCom docs to show examples of pushing multiple XComs (#46284, #47068)

Airflow 2.10.5 (2025-02-10)¶

Significant Changes¶

Ensure teardown tasks are executed when DAG run is set to failed (#45530)¶

Previously when a DAG run was manually set to “failed” or to “success” state the terminal state was set to all tasks. But this was a gap for cases when setup- and teardown tasks were defined: If teardown was used to clean-up infrastructure or other resources, they were also skipped and thus resources could stay allocated.

As of now when setup tasks had been executed before and the DAG is manually set to “failed” or “success” then teardown tasks are executed. Teardown tasks are skipped if the setup was also skipped.

As a side effect this means if the DAG contains teardown tasks, then the manual marking of DAG as “failed” or “success” will need to keep the DAG in running state to ensure that teardown tasks will be scheduled. They would not be scheduled if the DAG is directly set to “failed” or “success”.

Bug Fixes¶

Prevent using trigger_rule=TriggerRule.ALWAYS in a task-generated mapping within bare tasks (#44751)
Fix ShortCircuitOperator mapped tasks (#44912)
Fix premature evaluation of tasks with certain trigger rules (e.g. ONE_DONE) in a mapped task group (#44937)
Fix task_id validation in BaseOperator (#44938) (#44938)
Allow fetching XCom with forward slash from the API and escape it in the UI (#45134)
Fix FileTaskHandler only read from default executor (#46000)
Fix empty task instance for log (#45702) (#45703)
Remove skip_if and run_if decorators before TaskFlow virtualenv tasks are run (#41832) (#45680)
Fix request body for json requests in event log (#45546) (#45560)
Ensure teardown tasks are executed when DAG run is set to failed (#45530) (#45581)
Do not update DR on TI update after task execution (#45348)
Fix object and array DAG params that have a None default (#45313) (#45315)
Fix endless sensor rescheduling (#45224) (#45250)
Evaluate None in SQLAlchemy’s extended JSON type decorator (#45119) (#45120)
Allow dynamic tasks to be filtered by rendered_map_index (#45109) (#45122)
Handle relative paths when sanitizing URLs (#41995) (#45080)
Set Autocomplete Off on Login Form (#44929) (#44940)
Add Webserver parameters max_form_parts, max_form_memory_size (#46243) (#45749)
Fixed accessing thread local variable in BaseOperators execute safeguard mechanism (#44646) (#46280)
Add map_index parameter to extra links API (#46337)

Miscellaneous¶

Add traceback log output when SIGTERMs was sent (#44880) (#45077)
Removed the ability for Operators to specify their own “scheduling deps” (#45713) (#45742)
Deprecate conf from Task Context (#44993)

Airflow 2.10.4 (2024-12-16)¶

Significant Changes¶

TaskInstance `priority_weight` is capped in 32-bit signed integer ranges (#43611)¶

Some database engines are limited to 32-bit integer values. As some users reported errors in weight rolled-over to negative values, we decided to cap the value to the 32-bit integer. Even if internally in python smaller or larger values to 64 bit are supported, priority_weight is capped and only storing values from -2147483648 to 2147483647.

Bug Fixes¶

Fix stats of dynamic mapped tasks after automatic retries of failed tasks (#44300)
Fix wrong display of multi-line messages in the log after filtering (#44457)
Allow “/” in metrics validator (#42934) (#44515)
Fix gantt flickering (#44488) (#44517)
Fix problem with inability to remove fields from Connection form (#40421) (#44442)
Check pool_slots on partial task import instead of execution (#39724) (#42693)
Avoid grouping task instance stats by try_number for dynamic mapped tasks (#44300) (#44319)
Re-queue task when they are stuck in queued (#43520) (#44158)
Suppress the warnings where we check for sensitive values (#44148) (#44167)
Fix get_task_instance_try_details to return appropriate schema (#43830) (#44133)
Log message source details are grouped (#43681) (#44070)
Fix duplication of Task tries in the UI (#43891) (#43950)
Add correct mime-type in OpenAPI spec (#43879) (#43901)
Disable extra links button if link is null or empty (#43844) (#43851)
Disable XCom list ordering by execution_date (#43680) (#43696)
Fix venv numpy example which needs to be 1.26 at least to be working in Python 3.12 (#43659)
Fix Try Selector in Mapped Tasks also on Index 0 (#43590) (#43591)
Prevent using trigger_rule="always" in a dynamic mapped task (#43810)
Prevent using trigger_rule=TriggerRule.ALWAYS in a task-generated mapping within bare tasks (#44751)

Doc Only Changes¶

Update XCom docs around containers/helm (#44570) (#44573)

Miscellaneous¶

Raise deprecation warning when accessing inlet or outlet events through str (#43922)

Airflow 2.10.3 (2024-11-05)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Improves the handling of value masking when setting Airflow variables for enhanced security. (#43123) (#43278)
Adds support for task_instance_mutation_hook to handle mapped operators with index 0. (#42661) (#43089)
Fixes executor cleanup to properly handle zombie tasks when task instances are terminated. (#43065)
Adds retry logic for HTTP 502 and 504 errors in internal API calls to handle webserver startup issues. (#42994) (#43044)
Restores the use of separate sessions for writing and deleting RTIF data to prevent StaleDataError. (#42928) (#43012)
Fixes PythonOperator error by replacing hyphens with underscores in DAG names. (#42993)
Improving validation of task retries to handle None values (#42532) (#42915)
Fixes error handling in dataset managers when resolving dataset aliases into new datasets (#42733)
Enables clicking on task names in the DAG Graph View to correctly select the corresponding task. (#38782) (#42697)
Prevent redirect loop on /home with tags/last run filters (#42607) (#42609) (#42628)
Support of host.name in OTEL metrics and usage of OTEL_RESOURCE_ATTRIBUTES in metrics (#42428) (#42604)
Reduce eyestrain in dark mode with reduced contrast and saturation (#42567) (#42583)
Handle ENTER key correctly in trigger form and allow manual JSON (#42525) (#42535)
Ensure DAG trigger form submits with updated parameters upon keyboard submit (#42487) (#42499)
Do not attempt to provide not stringified objects to UI via xcom if pickling is active (#42388) (#42486)
Fix the span link of task instance to point to the correct span in the scheduler_job_loop (#42430) (#42480)
Bugfix task execution from runner in Windows (#42426) (#42478)
Allows overriding the hardcoded OTEL_SERVICE_NAME with an environment variable (#42242) (#42441)
Improves trigger performance by using selectinload instead of joinedload (#40487) (#42351)
Suppress warnings when masking sensitive configs (#43335) (#43337)
Masking configuration values irrelevant to DAG author (#43040) (#43336)
Execute templated bash script as file in BashOperator (#43191)
Fixes schedule_downstream_tasks to include upstream tasks for one_success trigger rule (#42582) (#43299)
Add retry logic in the scheduler for updating trigger timeouts in case of deadlocks. (#41429) (#42651)
Mark all tasks as skipped when failing a dag_run manually (#43572)
Fix TrySelector for Mapped Tasks in Logs and Details Grid Panel (#43566)
Conditionally add OTEL events when processing executor events (#43558) (#43567)
Fix broken stat scheduler_loop_duration (#42886) (#43544)
Ensure total_entries in /api/v1/dags (#43377) (#43429)
Include limit and offset in request body schema for List task instances (batch) endpoint (#43479)
Don’t raise a warning in ExecutorSafeguard when execute is called from an extended operator (#42849) (#43577)

Miscellaneous¶

Deprecate session auth backend (#42911)
Removed unicodecsv dependency for providers with Airflow version 2.8.0 and above (#42765) (#42970)
Remove the referrer from Webserver to Scarf (#42901) (#42942)
Bump dompurify from 2.2.9 to 2.5.6 in /airflow/www (#42263) (#42270)
Correct docstring format in _get_template_context (#42244) (#42272)
Backport: Bump Flask-AppBuilder to 4.5.2 (#43309) (#43318)
Check python version that was used to install pre-commit venvs (#43282) (#43310)
Resolve warning in Dataset Alias migration (#43425)

Doc Only Changes¶

Clarifying PLUGINS_FOLDER permissions by DAG authors (#43022) (#43029)
Add templating info to TaskFlow tutorial (#42992)
Airflow local settings no longer importable from dags folder (#42231) (#42603)
Fix documentation for cpu and memory usage (#42147) (#42256)
Fix instruction for docker compose (#43119) (#43321)
Updates documentation to reflect that dag_warnings is returned instead of import_errors. (#42858) (#42888)

Airflow 2.10.2 (2024-09-18)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Revert “Fix: DAGs are not marked as stale if the dags folder change” (#42220, #42217)
Add missing open telemetry span and correct scheduled slots documentation (#41985)
Fix require_confirmation_dag_change (#42063) (#42211)
Only treat null/undefined as falsy when rendering XComEntry (#42199) (#42213)
Add extra and renderedTemplates as keys to skip camelCasing (#42206) (#42208)
Do not camelcase xcom entries (#42182) (#42187)
Fix task_instance and dag_run links from list views (#42138) (#42143)
Support multi-line input for Params of type string in trigger UI form (#40414) (#42139)
Fix details tab log url detection (#42104) (#42114)
Add new type of exception to catch timeout (#42064) (#42078)
Rewrite how DAG to dataset / dataset alias are stored (#41987) (#42055)
Allow dataset alias to add more than one dataset events (#42189) (#42247)

Miscellaneous¶

Limit universal-pathlib below 0.2.4 as it breaks our integration (#42101)
Auto-fix default deferrable with LibCST (#42089)
Deprecate --tree flag for tasks list cli command (#41965)

Doc Only Changes¶

Update security_model.rst to clear unauthenticated endpoints exceptions (#42085)
Add note about dataclasses and attrs to XComs page (#42056)
Improve docs on markdown docs in DAGs (#42013)
Add warning that listeners can be dangerous (#41968)

Airflow 2.10.1 (2024-09-05)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Handle Example dags case when checking for missing files (#41874)
Fix logout link in “no roles” error page (#41845)
Set end_date and duration for triggers completed with end_from_trigger as True. (#41834)
DAGs are not marked as stale if the dags folder change (#41829)
Fix compatibility with FAB provider versions <1.3.0 (#41809)
Don’t Fail LocalTaskJob on heartbeat (#41810)
Remove deprecation warning for cgitb in Plugins Manager (#41793)
Fix log for notifier(instance) without __name__ (#41699)
Splitting syspath preparation into stages (#41694)
Adding url sanitization for extra links (#41680)
Fix InletEventsAccessors type stub (#41607)
Fix UI rendering when XCom is INT, FLOAT, BOOL or NULL (#41605)
Fix try selector refresh (#41503)
Incorrect try number subtraction producing invalid span id for OTEL airflow (#41535)
Add WebEncoder for trigger page rendering to avoid render failure (#41485)
Adding tojson filter to example_inlet_event_extra example dag (#41890)
Add backward compatibility check for executors that don’t inherit BaseExecutor (#41927)

Miscellaneous¶

Bump webpack from 5.76.0 to 5.94.0 in /airflow/www (#41879)
Adding rel property to hyperlinks in logs (#41783)
Field Deletion Warning when editing Connections (#41504)
Make Scarf usage reporting in major+minor versions and counters in buckets (#41900)
Lower down universal-pathlib minimum to 0.2.2 (#41943)
Protect against None components of universal pathlib xcom backend (#41938)

Doc Only Changes¶

Remove Debian bullseye support (#41569)
Add an example for auth with keycloak (#41791)

Airflow 2.10.0 (2024-08-15)¶

Significant Changes¶

Scarf based telemetry: Airflow now collect telemetry data (#39510)¶

Airflow integrates Scarf to collect basic usage data during operation. Deployments can opt-out of data collection by setting the [usage_data_collection]enabled option to False, or the SCARF_ANALYTICS=false environment variable.

Datasets no longer trigger inactive DAGs (#38891)¶

Previously, when a DAG is paused or removed, incoming dataset events would still trigger it, and the DAG would run when it is unpaused or added back in a DAG file. This has been changed; a DAG’s dataset schedule can now only be satisfied by events that occur when the DAG is active. While this is a breaking change, the previous behavior is considered a bug.

The behavior of time-based scheduling is unchanged, including the timetable part of DatasetOrTimeSchedule.

`try_number` is no longer incremented during task execution (#39336)¶

Previously, the try number (try_number) was incremented at the beginning of task execution on the worker. This was problematic for many reasons. For one it meant that the try number was incremented when it was not supposed to, namely when resuming from reschedule or deferral. And it also resulted in the try number being “wrong” when the task had not yet started. The workarounds for these two issues caused a lot of confusion.

Now, instead, the try number for a task run is determined at the time the task is scheduled, and does not change in flight, and it is never decremented. So after the task runs, the observed try number remains the same as it was when the task was running; only when there is a “new try” will the try number be incremented again.

One consequence of this change is, if users were “manually” running tasks (e.g. by calling ti.run() directly, or command line airflow tasks run), try number will no longer be incremented. Airflow assumes that tasks are always run after being scheduled by the scheduler, so we do not regard this as a breaking change.

`/logout` endpoint in FAB Auth Manager is now CSRF protected (#40145)¶

The /logout endpoint’s method in FAB Auth Manager has been changed from GET to POST in all existing AuthViews (AuthDBView, AuthLDAPView, AuthOAuthView, AuthOIDView, AuthRemoteUserView), and now includes CSRF protection to enhance security and prevent unauthorized logouts.

OpenTelemetry Traces for Apache Airflow (#37948).¶

This new feature adds capability for Apache Airflow to emit 1) airflow system traces of scheduler, triggerer, executor, processor 2) DAG run traces for deployed DAG runs in OpenTelemetry format. Previously, only metrics were supported which emitted metrics in OpenTelemetry. This new feature will add richer data for users to use OpenTelemetry standard to emit and send their trace data to OTLP compatible endpoints.

Decorator for Task Flow `(@skip_if, @run_if)` to make it simple to apply whether or not to skip a Task. (#41116)¶

This feature adds a decorator to make it simple to skip a Task.

Using Multiple Executors Concurrently (#40701)¶

Previously known as hybrid executors, this new feature allows Airflow to use multiple executors concurrently. DAGs, or even individual tasks, can be configured to use a specific executor that suits its needs best. A single DAG can contain tasks all using different executors. Please see the Airflow documentation for more details. Note: This feature is still experimental. See documentation on Executor for a more detailed description.

New Features¶

AIP-61 Hybrid Execution (AIP-61)
AIP-62 Getting Lineage from Hook Instrumentation (AIP-62)
AIP-64 TaskInstance Try History (AIP-64)
AIP-44 Internal API (AIP-44)
Enable ending the task directly from the triggerer without going into the worker. (#40084)
Extend dataset dependencies (#40868)
Feature/add token authentication to internal api (#40899)
Add DatasetAlias to support dynamic Dataset Event Emission and Dataset Creation (#40478)
Add example DAGs for inlet_events (#39893)
Implement accessors to read dataset events defined as inlet (#39367)
Decorator for Task Flow, to make it simple to apply whether or not to skip a Task. (#41116)
Add start execution from triggerer support to dynamic task mapping (#39912)
Add try_number to log table (#40739)
Added ds_format_locale method in macros which allows localizing datetime formatting using Babel (#40746)
Add DatasetAlias to support dynamic Dataset Event Emission and Dataset Creation (#40478, #40723, #40809, #41264, #40830, #40693, #41302)
Use sentinel to mark dag as removed on re-serialization (#39825)
Add parameter for the last number of queries to the DB in DAG file processing stats (#40323)
Add prototype version dark mode for Airflow UI (#39355)
Add ability to mark some tasks as successful in dag test (#40010)
Allow use of callable for template_fields (#37028)
Filter running/failed and active/paused dags on the home page(#39701)
Add metrics about task CPU and memory usage (#39650)
UI changes for DAG Re-parsing feature (#39636)
Add Scarf based telemetry (#39510, #41318)
Add dag re-parsing request endpoint (#39138)
Redirect to new DAGRun after trigger from Grid view (#39569)
Display endDate in task instance tooltip. (#39547)
Implement accessors to read dataset events defined as inlet (#39367, #39893)
Add color to log lines in UI for error and warnings based on keywords (#39006)
Add Rendered k8s pod spec tab to ti details view (#39141)
Make audit log before/after filterable (#39120)
Consolidate grid collapse actions to a single full screen toggle (#39070)
Implement Metadata to emit runtime extra (#38650)
Add executor field to the DB and parameter to the operators (#38474)
Implement context accessor for DatasetEvent extra (#38481)
Add dataset event info to dag graph (#41012)
Add button to toggle datasets on/off in dag graph (#41200)
Add run_if & skip_if decorators (#41116)
Add dag_stats rest api endpoint (#41017)
Add listeners for Dag import errors (#39739)
Allowing DateTimeSensorAsync, FileSensor and TimeSensorAsync to start execution from trigger during dynamic task mapping (#41182)

Improvements¶

Allow set Dag Run resource into Dag Level permission: extends Dag’s access_control feature to allow Dag Run resource permissions. (#40703)
Improve security and error handling for the internal API (#40999)
Datasets UI Improvements (#40871)
Change DAG Audit log tab to Event Log (#40967)
Make standalone dag file processor works in DB isolation mode (#40916)
Show only the source on the consumer DAG page and only triggered DAG run in the producer DAG page (#41300)
Update metrics names to allow multiple executors to report metrics (#40778)
Format DAG run count (#39684)
Update styles for renderedjson component (#40964)
Improve ATTRIBUTE_REMOVED sentinel to use class and more context (#40920)
Make XCom display as react json (#40640)
Replace usages of task context logger with the log table (#40867)
Rollback for all retry exceptions (#40882) (#40883)
Support rendering ObjectStoragePath value (#40638)
Add try_number and map_index as params for log event endpoint (#40845)
Rotate fernet key in batches to limit memory usage (#40786)
Add gauge metric for ‘last_num_of_db_queries’ parameter (#40833)
Set parallelism log messages to warning level for better visibility (#39298)
Add error handling for encoding the dag runs (#40222)
Use params instead of dag_run.conf in example DAG (#40759)
Load Example Plugins with Example DAGs (#39999)
Stop deferring TimeDeltaSensorAsync task when the target_dttm is in the past (#40719)
Send important executor logs to task logs (#40468)
Open external links in new tabs (#40635)
Attempt to add ReactJSON view to rendered templates (#40639)
Speeding up regex match time for custom warnings (#40513)
Refactor DAG.dataset_triggers into the timetable class (#39321)
add next_kwargs to StartTriggerArgs (#40376)
Improve UI error handling (#40350)
Remove double warning in CLI when config value is deprecated (#40319)
Implement XComArg concat() (#40172)
Added get_extra_dejson method with nested parameter which allows you to specify if you want the nested json as string to be also deserialized (#39811)
Add executor field to the task instance API (#40034)
Support checking for db path absoluteness on Windows (#40069)
Introduce StartTriggerArgs and prevent start trigger initialization in scheduler (#39585)
Add task documentation to details tab in grid view (#39899)
Allow executors to be specified with only the class name of the Executor (#40131)
Remove obsolete conditional logic related to try_number (#40104)
Allow Task Group Ids to be passed as branches in BranchMixIn (#38883)
Javascript connection form will apply CodeMirror to all textarea’s dynamically (#39812)
Determine needs_expansion at time of serialization (#39604)
Add indexes on dag_id column in referencing tables to speed up deletion of dag records (#39638)
Add task failed dependencies to details page (#38449)
Remove webserver try_number adjustment (#39623)
Implement slicing in lazy sequence (#39483)
Unify lazy db sequence implementations (#39426)
Add __getattr__ to task decorator stub (#39425)
Allow passing labels to FAB Views registered via Plugins (#39444)
Simpler error message when trying to offline migrate with sqlite (#39441)
Add soft_fail to TriggerDagRunOperator (#39173)
Rename “dataset event” in context to use “outlet” (#39397)
Resolve RemovedIn20Warning in airflow task command (#39244)
Determine fail_stop on client side when db isolated (#39258)
Refactor cloudpickle support in Python operators/decorators (#39270)
Update trigger kwargs migration to specify existing_nullable (#39361)
Allowing tasks to start execution directly from triggerer without going to worker (#38674)
Better db migrate error messages (#39268)
Add stacklevel into the suppress_and_warn warning (#39263)
Support searching by dag_display_name (#39008)
Allow sort by on all fields in MappedInstances.tsx (#38090)
Expose count of scheduled tasks in metrics (#38899)
Use declarative_base from sqlalchemy.orm instead of sqlalchemy.ext.declarative (#39134)
Add example DAG to demonstrate emitting approaches (#38821)
Give on_task_instance_failed access to the error that caused the failure (#38155)
Simplify dataset serialization (#38694)
Add heartbeat recovery message to jobs (#34457)
Remove select_column option in TaskInstance.get_task_instance (#38571)
Don’t create session in get_dag if not reading dags from database (#38553)
Add a migration script for encrypted trigger kwargs (#38358)
Implement render_templates on TaskInstancePydantic (#38559)
Handle optional session in _refresh_from_db (#38572)
Make type annotation less confusing in task_command.py (#38561)
Use fetch_dagrun directly to avoid session creation (#38557)
Added output_processor parameter to BashProcessor (#40843)
Improve serialization for Database Isolation Mode (#41239)
Only orphan non-orphaned Datasets (#40806)
Adjust gantt width based on task history dates (#41192)
Enable scrolling on legend with high number of elements. (#41187)

Bug Fixes¶

Bugfix for get_parsing_context() when ran with LocalExecutor (#40738)
Validating provider documentation urls before displaying in views (#40933)
Move import to make PythonOperator working on Windows (#40424)
Fix dataset_with_extra_from_classic_operator example DAG (#40747)
Call listener on_task_instance_failed() after ti state is changed (#41053)
Add never_fail in BaseSensor (#40915)
Fix tasks API endpoint when DAG doesn’t have start_date (#40878)
Fix and adjust URL generation for UI grid and older runs (#40764)
Rotate fernet key optimization (#40758)
Fix class instance vs. class type in validate_database_executor_compatibility() call (#40626)
Clean up dark mode (#40466)
Validate expected types for args for DAG, BaseOperator and TaskGroup (#40269)
Exponential Backoff Not Functioning in BaseSensorOperator Reschedule Mode (#39823)
local task job: add timeout, to not kill on_task_instance_success listener prematurely (#39890)
Move Post Execution Log Grouping behind Exception Print (#40146)
Fix triggerer race condition in HA setting (#38666)
Pass triggered or existing DAG Run logical date to DagStateTrigger (#39960)
Passing external_task_group_id to WorkflowTrigger (#39617)
ECS Executor: Set tasks to RUNNING state once active (#39212)
Only heartbeat if necessary in backfill loop (#39399)
Fix trigger kwarg encryption migration (#39246)
Fix decryption of trigger kwargs when downgrading. (#38743)
Fix wrong link in TriggeredDagRuns (#41166)
Pass MapIndex to LogLink component for external log systems (#41125)
Add NonCachingRotatingFileHandler for worker task (#41064)
Add argument include_xcom in method resolve an optional value (#41062)
Sanitizing file names in example_bash_decorator DAG (#40949)
Show dataset aliases in dependency graphs (#41128)
Render Dataset Conditions in DAG Graph view (#41137)
Add task duration plot across dagruns (#40755)
Add start execution from trigger support for existing core sensors (#41021)
add example dag for dataset_alias (#41037)
Add dataset alias unique constraint and remove wrong dataset alias removing logic (#41097)
Set “has_outlet_datasets” to true if “dataset alias” exists (#41091)
Make HookLineageCollector group datasets by (#41034)
Enhance start_trigger_args serialization (#40993)
Refactor BaseSensorOperator introduce skip_policy parameter (#40924)
Fix viewing logs from triggerer when task is deferred (#41272)
Refactor how triggered dag run url is replaced (#41259)
Added support for additional sql alchemy session args (#41048)
Allow empty list in TriggerDagRun failed_state (#41249)
Clean up the exception handler when run_as_user is the airflow user (#41241)
Collapse docs when click and folded (#41214)
Update updated_at when saving to db as session.merge does not trigger on-update (#40782)
Fix query count statistics when parsing DAF file (#41149)
Method Resolution Order in operators without __init__ (#41086)
Ensure try_number incremented for empty operator (#40426)

Miscellaneous¶

Remove the Experimental flag from OTel Traces (#40874)
Bump packaging version to 23.0 in order to fix issue with older otel (#40865)
Simplify _auth_manager_is_authorized_map function (#40803)
Use correct unknown executor exception in scheduler job (#40700)
Add D1 pydocstyle rules to pyproject.toml (#40569)
Enable enforcing pydocstyle rule D213 in ruff. (#40448, #40464)
Update Dag.test() to run with an executor if desired (#40205)
Update jest and babel minor versions (#40203)
Refactor BashOperator and Bash decorator for consistency and simplicity (#39871)
Add AirflowInternalRuntimeError for raise non catchable errors (#38778)
ruff version bump 0.4.5 (#39849)
Bump pytest to 8.0+ (#39450)
Remove stale comment about TI index (#39470)
Configure back_populates between DagScheduleDatasetReference.dag and DagModel.schedule_dataset_references (#39392)
Remove deprecation warnings in endpoints.py (#39389)
Fix SQLA deprecations in Airflow core (#39211)
Use class-bound attribute directly in SA (#39198, #39195)
Fix stacklevel for TaskContextLogger (#39142)
Capture warnings during collect DAGs (#39109)
Resolve B028 (no-explicit-stacklevel) in core (#39123)
Rename model ImportError to ParseImportError for avoid shadowing with builtin exception (#39116)
Add option to support cloudpickle in PythonVenv/External Operator (#38531)
Suppress SubDagOperator examples warnings (#39057)
Add log for running callback (#38892)
Use model_dump instead of dict for serialize Pydantic V2 model (#38933)
Widen cheat sheet column to avoid wrapping commands (#38888)
Update hatchling to latest version (1.22.5) (#38780)
bump uv to 0.1.29 (#38758)
Add missing serializations found during provider tests fixing (#41252)
Bump ws from 7.5.5 to 7.5.10 in /airflow/www (#40288)
Improve typing for allowed/failed_states in TriggerDagRunOperator (#39855)

Doc Only Changes¶

Add filesystems and dataset-uris to “how to create your own provider” page (#40801)
Fix (TM) to (R) in Airflow repository (#40783)
Set otel_on to True in example airflow.cfg (#40712)
Add warning for _AIRFLOW_PATCH_GEVENT (#40677)
Update multi-team diagram proposal after Airflow 3 discussions (#40671)
Add stronger warning that MSSQL is not supported and no longer functional (#40565)
Fix misleading mac menu structure in howto (#40440)
Update k8s supported version in docs (#39878)
Add compatibility note for Listeners (#39544)
Update edge label image in documentation example with the new graph view (#38802)
Update UI doc screenshots (#38680)
Add section “Manipulating queued dataset events through REST API” (#41022)
Add information about lack of security guarantees for docker compose (#41072)
Add links to example dags in use params section (#41031)
Change task_id from send_email to send_email_notification in taskflow.rst (#41060)
Remove unnecessary nginx redirect rule from reverse proxy documentation (#38953)

Airflow 2.9.3 (2024-07-15)¶

Significant Changes¶

Time unit for `scheduled_duration` and `queued_duration` changed (#37936)¶

scheduled_duration and queued_duration metrics are now emitted in milliseconds instead of seconds.

By convention all statsd metrics should be emitted in milliseconds, this is later expected in e.g. prometheus statsd-exporter.

Support for OpenTelemetry Metrics is no longer “Experimental” (#40286)¶

Experimental support for OpenTelemetry was added in 2.7.0 since then fixes and improvements were added and now we announce the feature as stable.

Bug Fixes¶

Fix calendar view scroll (#40458)
Validating provider description for urls in provider list view (#40475)
Fix compatibility with old MySQL 8.0 (#40314)
Fix dag (un)pausing won’t work on environment where dag files are missing (#40345)
Extra being passed to SQLalchemy (#40391)
Handle unsupported operand int + str when value of tag is int (job_id) (#40407)
Fix TriggeredDagRunOperator triggered link (#40336)
Add [webserver]update_fab_perms to deprecated configs (#40317)
Swap dag run link from legacy graph to grid with graph tab (#40241)
Change httpx to requests in file_task_handler (#39799)
Fix import future annotations in venv jinja template (#40208)
Ensures DAG params order regardless of backend (#40156)
Use a join for TI notes in TI batch API endpoint (#40028)
Improve trigger UI for string array format validation (#39993)
Disable jinja2 rendering for doc_md (#40522)
Skip checking sub dags list if taskinstance state is skipped (#40578)
Recognize quotes when parsing urls in logs (#40508)

Doc Only Changes¶

Add notes about passing secrets via environment variables (#40519)
Revamp some confusing log messages (#40334)
Add more precise description of masking sensitive field names (#40512)
Add slightly more detailed guidance about upgrading to the docs (#40227)
Metrics allow_list complete example (#40120)
Add warning to deprecated api docs that access control isn’t applied (#40129)
Simpler command to check local scheduler is alive (#40074)
Add a note and an example clarifying the usage of DAG-level params (#40541)
Fix highlight of example code in dags.rst (#40114)
Add warning about the PostgresOperator being deprecated (#40662)
Updating airflow download links to CDN based links (#40618)
Fix import statement for DatasetOrTimetable example (#40601)
Further clarify triage process (#40536)
Fix param order in PythonOperator docstring (#40122)
Update serializers.rst to mention that bytes are not supported (#40597)

Miscellaneous¶

Upgrade build installers and dependencies (#40177)
Bump braces from 3.0.2 to 3.0.3 in /airflow/www (#40180)
Upgrade to another version of trove-classifier (new CUDA classifiers) (#40564)
Rename “try_number” increments that are unrelated to the airflow concept (#39317)
Update trove classifiers to the latest version as build dependency (#40542)
Upgrade to latest version of hatchling as build dependency (#40387)
Fix bug in SchedulerJobRunner._process_executor_events (#40563)
Remove logging for “blocked” events (#40446)

Airflow 2.9.2 (2024-06-10)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Fix bug that makes AirflowSecurityManagerV2 leave transactions in the idle in transaction state (#39935)
Fix alembic auto-generation and rename mismatching constraints (#39032)
Add the existing_nullable to the downgrade side of the migration (#39374)
Fix Mark Instance state buttons stay disabled if user lacks permission (#37451). (#38732)
Use SKIP LOCKED instead of NOWAIT in mini scheduler (#39745)
Remove DAG Run Add option from FAB view (#39881)
Add max_consecutive_failed_dag_runs in API spec (#39830)
Fix example_branch_operator failing in python 3.12 (#39783)
Fetch served logs also when task attempt is up for retry and no remote logs available (#39496)
Change dataset URI validation to raise warning instead of error in Airflow 2.9 (#39670)
Visible DAG RUN doesn’t point to the same dag run id (#38365)
Refactor SafeDogStatsdLogger to use get_validator to enable pattern matching (#39370)
Fix custom actions in security manager has_access (#39421)
Fix HTTP 500 Internal Server Error if DAG is triggered with bad params (#39409)
Fix static file caching is disabled in Airflow Webserver. (#39345)
Fix TaskHandlerWithCustomFormatter now adds prefix only once (#38502)
Do not provide deprecated execution_date in @apply_lineage (#39327)
Add missing conn_id to string representation of ObjectStoragePath (#39313)
Fix sql_alchemy_engine_args config example (#38971)
Add Cache-Control “no-store” to all dynamically generated content (#39550)

Miscellaneous¶

Limit yandex provider to avoid mypy errors (#39990)
Warn on mini scheduler failures instead of debug (#39760)
Change type definition for provider_info_cache decorator (#39750)
Better typing for BaseOperator defer (#39742)
More typing in TimeSensor and TimeSensorAsync (#39696)
Re-raise exception from strict dataset URI checks (#39719)
Fix stacklevel for _log_state helper (#39596)
Resolve SA warnings in migrations scripts (#39418)
Remove unused index idx_last_scheduling_decision on dag_run table (#39275)

Doc Only Changes¶

Provide extra tip on labeling DynamicTaskMapping (#39977)
Improve visibility of links / variables / other configs in Configuration Reference (#39916)
Remove ‘legacy’ definition for CronDataIntervalTimetable (#39780)
Update plugins.rst examples to use pyproject.toml over setup.py (#39665)
Fix nit in pg set-up doc (#39628)
Add Matomo to Tracking User Activity docs (#39611)
Fix Connection.get -> Connection. get_connection_from_secrets (#39560)
Adding note for provider dependencies (#39512)
Update docker-compose command (#39504)
Update note about restarting triggerer process (#39436)
Updating S3LogLink with an invalid bucket link (#39424)
Update testing_packages.rst (#38996)
Add multi-team diagrams (#38861)

Airflow 2.9.1 (2024-05-03)¶

Significant Changes¶

Stackdriver logging bugfix requires Google provider `10.17.0` or later (#38071)¶

If you use Stackdriver logging, you must use Google provider version 10.17.0 or later. Airflow 2.9.1 now passes gcp_log_name to the StackdriverTaskHandler instead of name, and this will fail on earlier provider versions.

This fixes a bug where the log name configured in [logging] remove_base_log_folder was overridden when Airflow configured logging, resulting in task logs going to the wrong destination.

Bug Fixes¶

Make task log messages include run_id (#39280)
Copy menu_item href for nav bar (#39282)
Fix trigger kwarg encryption migration (#39246, #39361, #39374)
Add workaround for datetime-local input in firefox (#39261)
Add Grid button to Task Instance view (#39223)
Get served logs when remote or executor logs not available for non-running task try (#39177)
Fixed side effect of menu filtering causing disappearing menus (#39229)
Use grid view for Task Instance’s log_url (#39183)
Improve task filtering UX (#39119)
Improve rendered_template ux in react dag page (#39122)
Graph view improvements (#38940)
Check that the dataset<>task exists before trying to render graph (#39069)
Hostname was “redacted”, not “redact”; remove it when there is no context (#39037)
Check whether AUTH_ROLE_PUBLIC is set in check_authentication (#39012)
Move rendering of map_index_template so it renders for failed tasks as long as it was defined before the point of failure (#38902)
Undeprecate BaseXCom.get_one method for now (#38991)
Add inherit_cache attribute for CreateTableAs custom SA Clause (#38985)
Don’t wait for DagRun lock in mini scheduler (#38914)
Fix calendar view with no DAG Run (#38964)
Changed the background color of external task in graph (#38969)
Fix dag run selection (#38941)
Fix SAWarning ‘Coercing Subquery object into a select() for use in IN()’ (#38926)
Fix implicit cartesian product in AirflowSecurityManagerV2 (#38913)
Fix problem that links in legacy log view can not be clicked (#38882)
Fix dag run link params (#38873)
Use async db calls in WorkflowTrigger (#38689)
Fix audit log events filter (#38719)
Use methodtools.lru_cache instead of functools.lru_cache in class methods (#37757)
Raise deprecated warning in airflow dags backfill only if -I / --ignore-first-depends-on-past provided (#38676)

Miscellaneous¶

TriggerDagRunOperator deprecate execution_date in favor of logical_date (#39285)
Force to use Airflow Deprecation warnings categories on @deprecated decorator (#39205)
Add warning about run/import Airflow under the Windows (#39196)
Update is_authorized_custom_view from auth manager to handle custom actions (#39167)
Add in Trove classifiers Python 3.12 support (#39004)
Use debug level for minischeduler skip (#38976)
Bump undici from 5.28.3 to 5.28.4 in /airflow/www (#38751)

Doc Only Changes¶

Fix supported k8s version in docs (#39172)
Dynamic task mapping PythonOperator op_kwargs (#39242)
Add link to user and role commands (#39224)
Add k8s 1.29 to supported version in docs (#39168)
Data aware scheduling docs edits (#38687)
Update DagBag class docstring to include all params (#38814)
Correcting an example taskflow example (#39015)
Remove decorator from rendering fields example (#38827)

Airflow 2.9.0 (2024-04-08)¶

Significant Changes¶

Following Listener API methods are considered stable and can be used for production system (were experimental feature in older Airflow versions) (#36376):¶

Lifecycle events:

on_starting
before_stopping

DagRun State Change Events:

on_dag_run_running
on_dag_run_success
on_dag_run_failed

TaskInstance State Change Events:

on_task_instance_running
on_task_instance_success
on_task_instance_failed

Support for Microsoft SQL-Server for Airflow Meta Database has been removed (#36514)¶

After discussion and a voting process, the Airflow’s PMC members and Committers have reached a resolution to no longer maintain MsSQL as a supported Database Backend.

As of Airflow 2.9.0 support of MsSQL has been removed for Airflow Database Backend.

A migration script which can help migrating the database before upgrading to Airflow 2.9.0 is available in airflow-mssql-migration repo on Github. Note that the migration script is provided without support and warranty.

This does not affect the existing provider packages (operators and hooks), DAGs can still access and process data from MsSQL.

Dataset URIs are now validated on input (#37005)¶

Datasets must use a URI that conform to rules laid down in AIP-60, and the value will be automatically normalized when the DAG file is parsed. See documentation on Datasets for a more detailed description on the rules.

You may need to change your Dataset identifiers if they look like a URI, but are used in a less mainstream way, such as relying on the URI’s auth section, or have a case-sensitive protocol name.

Add REST API actions to Audit Log events (#37734)¶

The Audit Log event name for REST API events will be prepended with api. or ui., depending on if it came from the Airflow UI or externally.

Official support for Python 3.12 (#38025)¶

There are a few caveats though:

Pendulum2 does not support Python 3.12. For Python 3.12 you need to use Pendulum 3
Minimum SQLAlchemy version supported when Pandas is installed for Python 3.12 is 1.4.36 released in April 2022. Airflow 2.9.0 increases the minimum supported version of SQLAlchemy to 1.4.36 for all Python versions.

Not all Providers support Python 3.12. At the initial release of Airflow 2.9.0 the following providers are released without support for Python 3.12:

apache.beam - pending on Apache Beam support for 3.12

papermill - pending on Releasing Python 3.12 compatible papermill client version including this merged issue

Prevent large string objects from being stored in the Rendered Template Fields (#38094)¶

There’s now a limit to the length of data that can be stored in the Rendered Template Fields. The limit is set to 4096 characters. If the data exceeds this limit, it will be truncated. You can change this limit by setting the [core]max_template_field_length configuration option in your airflow config.

Change xcom table column value type to longblob for MySQL backend (#38401)¶

Xcom table column value type has changed from blob to longblob. This will allow you to store relatively big data in Xcom but process can take a significant amount of time if you have a lot of large data stored in Xcom.

To downgrade from revision: b4078ac230a1, ensure that you don’t have Xcom values larger than 65,535 bytes. Otherwise, you’ll need to clean those rows or run airflow db clean xcom to clean the Xcom table.

Stronger validation for key parameter defaults in taskflow context variables (#38015)¶

As for the taskflow implementation in conjunction with context variable defaults invalid parameter orders can be generated, it is now not accepted anymore (and validated) that taskflow functions are defined with defaults other than None. If you have done this before you most likely will see a broken DAG and a error message like Error message: Context key parameter my_param can't have a default other than None.

New Features¶

Allow users to write dag_id and task_id in their national characters, added display name for dag / task (v2) (#38446)
Prevent large objects from being stored in the RTIF (#38094)
Use current time to calculate duration when end date is not present. (#38375)
Add average duration mark line in task and dagrun duration charts. (#38214, #38434)
Add button to manually create dataset events (#38305)
Add Matomo as an option for analytics_tool. (#38221)
Experimental: Support custom weight_rule implementation to calculate the TI priority_weight (#38222)
Adding ability to automatically set DAG to off after X times it failed sequentially (#36935)
Add dataset conditions to next run datasets modal (#38123)
Add task log grouping to UI (#38021)
Add dataset_expression to grid dag details (#38121)
Introduce mechanism to support multiple executor configuration (#37635)
Add color formatting for ANSI chars in logs from task executions (#37985)
Add the dataset_expression as part of DagModel and DAGDetailSchema (#37826)
Allow longer rendered_map_index (#37798)
Inherit the run_ordering from DatasetTriggeredTimetable for DatasetOrTimeSchedule (#37775)
Implement AIP-60 Dataset URI formats (#37005)
Introducing Logical Operators for dataset conditional logic (#37101)
Add post endpoint for dataset events (#37570)
Show custom instance names for a mapped task in UI (#36797)
Add excluded/included events to get_event_logs api (#37641)
Add datasets to dag graph (#37604)
Show dataset events above task/run details in grid view (#37603)
Introduce new config variable to control whether DAG processor outputs to stdout (#37439)
Make Datasets hashable (#37465)
Add conditional logic for dataset triggering (#37016)
Implement task duration page in react. (#35863)
Add queuedEvent endpoint to get/delete DatasetDagRunQueue (#37176)
Support multiple XCom output in the BaseOperator (#37297)
AIP-58: Add object storage backend for xcom (#37058)
Introduce DatasetOrTimeSchedule (#36710)
Add on_skipped_callback to BaseOperator (#36374)
Allow override of hovered navbar colors (#36631)
Create new Metrics with Tagging (#36528)
Add support for openlineage to AFS and common.io (#36410)
Introduce @task.bash TaskFlow decorator (#30176, #37875)

Improvements¶

More human friendly “show tables” output for db cleanup (#38654)
Improve trigger assign_unassigned by merging alive_triggerer_ids and get_sorted_triggers queries (#38664)
Add exclude/include events filters to audit log (#38506)
Clean up unused triggers in a single query for all dialects except MySQL (#38663)
Update Confirmation Logic for Config Changes on Sensitive Environments Like Production (#38299)
Improve datasets graph UX (#38476)
Only show latest dataset event timestamp after last run (#38340)
Add button to clear only failed tasks in a dagrun. (#38217)
Delete all old dag pages and redirect to grid view (#37988)
Check task attribute before use in sentry.add_tagging() (#37143)
Mysql change xcom value col type for MySQL backend (#38401)
ExternalPythonOperator use version from sys.version_info (#38377)
Replace too broad exceptions into the Core (#38344)
Add CLI support for bulk pause and resume of DAGs (#38265)
Implement methods on TaskInstancePydantic and DagRunPydantic (#38295, #38302, #38303, #38297)
Made filters bar collapsible and add a full screen toggle (#38296)
Encrypt all trigger attributes (#38233, #38358, #38743)
Upgrade react-table package. Use with Audit Log table (#38092)
Show if dag page filters are active (#38080)
Add try number to mapped instance (#38097)
Add retries to job heartbeat (#37541)
Add REST API events to Audit Log (#37734)
Make current working directory as templated field in BashOperator (#37968)
Add calendar view to react (#37909)
Add run_id column to log table (#37731)
Add tryNumber to grid task instance tooltip (#37911)
Session is not used in _do_render_template_fields (#37856)
Improve MappedOperator property types (#37870)
Remove provide_session decorator from TaskInstancePydantic methods (#37853)
Ensure the “airflow.task” logger used for TaskInstancePydantic and TaskInstance (#37857)
Better error message for internal api call error (#37852)
Increase tooltip size of dag grid view (#37782) (#37805)
Use named loggers instead of root logger (#37801)
Add Run Duration in React (#37735)
Avoid non-recommended usage of logging (#37792)
Improve DateTimeTrigger typing (#37694)
Make sure all unique run_ids render a task duration bar (#37717)
Add Dag Audit Log to React (#37682)
Add log event for auto pause (#38243)
Better message for exception for templated base operator fields (#37668)
Clean up webserver endpoints adding to audit log (#37580)
Filter datasets graph by dag_id (#37464)
Use new exception type inheriting BaseException for SIGTERMs (#37613)
Refactor dataset class inheritance (#37590)
Simplify checks for package versions (#37585)
Filter Datasets by associated dag_ids (GET /datasets) (#37512)
Enable “airflow tasks test” to run deferrable operator (#37542)
Make datasets list/graph width adjustable (#37425)
Speedup determine installed airflow version in ExternalPythonOperator (#37409)
Add more task details from rest api (#37394)
Add confirmation dialog box for DAG run actions (#35393)
Added shutdown color to the STATE_COLORS (#37295)
Remove legacy dag details page and redirect to grid (#37232)
Order XCom entries by map index in API (#37086)
Add data_interval_start and data_interval_end in dagrun create API endpoint (#36630)
Making links in task logs as hyperlinks by preventing HTML injection (#36829)
Improve ExternalTaskSensor Async Implementation (#36916)
Make Datasets Pathlike (#36947)
Simplify query for orphaned tasks (#36566)
Add deferrable param in FileSensor (#36840)
Run Trigger Page: Configurable number of recent configs (#36878)
Merge nowait and skip_locked into with_row_locks (#36889)
Return the specified field when get dag/dagRun in the REST API (#36641)
Only iterate over the items if debug is enabled for DagFileProcessorManager (#36761)
Add a fuzzy/regex pattern-matching for metric allow and block list (#36250)
Allow custom columns in cli dags list (#35250)
Make it possible to change the default cron timetable (#34851)
Some improvements to Airflow IO code (#36259)
Improve TaskInstance typing hints (#36487)
Remove dependency of Connexion from auth manager interface (#36209)
Refactor ExternalDagLink to not create ad hoc TaskInstances (#36135)

Bug Fixes¶

Load providers configuration when gunicorn workers start (#38795)
Fix grid header rendering (#38720)
Add a task instance dependency for mapped dependencies (#37498)
Improve stability of remove_task_decorator function (#38649)
Mark more fields on API as dump-only (#38616)
Fix total_entries count on the event logs endpoint (#38625)
Add padding to bottom of log block. (#38610)
Properly serialize nested attrs classes (#38591)
Fixing the tz in next run ID info (#38482)
Show abandoned tasks in Grid View (#38511)
Apply task instance mutation hook consistently (#38440)
Override chakra styles to keep dropdowns in filter bar (#38456)
Store duration in seconds and scale to handle case when a value in the series has a larger unit than the preceding durations. (#38374)
Don’t allow defaults other than None in context parameters, and improve error message (#38015)
Make postgresql default engine args comply with SA 2.0 (#38362)
Add return statement to yield within a while loop in triggers (#38389)
Ensure __exit__ is called in decorator context managers (#38383)
Make the method BaseAuthManager.is_authorized_custom_view abstract (#37915)
Add upper limit to planned calendar events calculation (#38310)
Fix Scheduler in daemon mode doesn’t create PID at the specified location (#38117)
Properly serialize TaskInstancePydantic and DagRunPydantic (#37855)
Fix graph task state border color (#38084)
Add back methods removed in security manager (#37997)
Don’t log “403” from worker serve-logs as “Unknown error”. (#37933)
Fix execution data validation error in /get_logs_with_metadata endpoint (#37756)
Fix task duration selection (#37630)
Refrain from passing encoding to the SQL engine in SQLAlchemy v2 (#37545)
Fix ‘implicitly coercing SELECT object to scalar subquery’ in latest dag run statement (#37505)
Clean up typing with max_execution_date query builder (#36958)
Optimize max_execution_date query in single dag case (#33242)
Fix list dags command for get_dagmodel is None (#36739)
Load consuming_dags attr eagerly before dataset listener (#36247)

Miscellaneous¶

Remove display of param from the UI (#38660)
Update log level to debug from warning about scheduled_duration metric (#38180)
Use importlib_metadata with compat to Python 3.10/3.12 stdlib (#38366)
Refactored __new__ magic method of BaseOperatorMeta to avoid bad mixing classic and decorated operators (#37937)
Use sys.version_info for determine Python Major.Minor (#38372)
Add missing deprecated Fab auth manager (#38376)
Remove unused loop variable from airflow package (#38308)
Adding max consecutive failed dag runs info in UI (#38229)
Bump minimum version of blinker add where it requires (#38140)
Bump follow-redirects from 1.15.4 to 1.15.6 in /airflow/www (#38156)
Bump Cryptography to > 39.0.0 (#38112)
Add Python 3.12 support (#36755, #38025, #36595)
Avoid use of assert outside of the tests (#37718)
Update ObjectStoragePath for universal_pathlib>=v0.2.2 (#37930)
Resolve G004: Logging statement uses f-string (#37873)
Update build and install dependencies. (#37910)
Bump sanitize-html from 2.11.0 to 2.12.1 in /airflow/www (#37833)
Update to latest installer versions. (#37754)
Deprecate smtp configs in airflow settings / local_settings (#37711)
Deprecate PY* constants into the airflow module (#37575)
Remove usage of deprecated flask._request_ctx_stack (#37522)
Remove redundant login attribute in airflow.__init__.py (#37565)
Upgrade to FAB 4.3.11 (#37233)
Remove SCHEDULED_DEPS which is no longer used anywhere since 2.0.0 (#37140)
Replace datetime.datetime.utcnow by airflow.utils.timezone.utcnow in core (#35448)
Bump aiohttp min version to avoid CVE-2024-23829 and CVE-2024-23334 (#37110)
Move config related to FAB auth manager to FAB provider (#36232)
Remove MSSQL support form Airflow core (#36514)
Remove is_authorized_cluster_activity from auth manager (#36175)
Create FAB provider and move FAB auth manager in it (#35926)

Doc Only Changes¶

Improve timetable documentation (#38505)
Reorder OpenAPI Spec tags alphabetically (#38717)
Update UI screenshots in the documentation (#38680, #38403, #38438, #38435)
Remove section as it’s no longer true with dataset expressions PR (#38370)
Refactor DatasetOrTimeSchedule timetable docs (#37771)
Migrate executor docs to respective providers (#37728)
Add directive to render a list of URI schemes (#37700)
Add doc page with providers deprecations (#37075)
Add a cross reference to security policy (#37004)
Improve AIRFLOW__WEBSERVER__BASE_URL docs (#37003)
Update faq.rst with (hopefully) clearer description of start_date (#36846)
Update public interface doc re operators (#36767)
Add exception to templates ref list (#36656)
Add auth manager interface as public interface (#36312)
Reference fab provider documentation in Airflow documentation (#36310)
Create auth manager documentation (#36211)
Update permission docs (#36120)
Docstring improvement to _covers_every_hour (#36081)
Add note that task instance, dag and lifecycle listeners are non-experimental (#36376)

Airflow 2.8.4 (2024-03-25)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Fix incorrect serialization of FixedTimezone (#38139)
Fix excessive permission changing for log task handler (#38164)
Fix task instances list link (#38096)
Fix a bug where scheduler heartrate parameter was not used (#37992)
Add padding to prevent grid horizontal scroll overlapping tasks (#37942)
Fix hash caching in ObjectStoragePath (#37769)

Miscellaneous¶

Limit importlib_resources as it breaks pytest_rewrites (#38095, #38139)
Limit pandas to <2.2 (#37748)
Bump croniter to fix an issue with 29 Feb cron expressions (#38198)

Doc Only Changes¶

Tell users what to do if their scanners find issues in the image (#37652)
Add a section about debugging in Docker Compose with PyCharm (#37940)
Update deferrable docs to clarify kwargs when trigger resumes operator (#38122)

Airflow 2.8.3 (2024-03-11)¶

Significant Changes¶

The smtp provider is now pre-installed when you install Airflow. (#37713)¶

Bug Fixes¶

Add “MENU” permission in auth manager (#37881)
Fix external_executor_id being overwritten (#37784)
Make more MappedOperator members modifiable (#37828)
Set parsing context dag_id in dag test command (#37606)

Miscellaneous¶

Remove useless methods from security manager (#37889)
Improve code coverage for TriggerRuleDep (#37680)
The SMTP provider is now preinstalled when installing Airflow (#37713)
Bump min versions of openapi validators (#37691)
Properly include airflow_pre_installed_providers.txt artifact (#37679)

Doc Only Changes¶

Clarify lack of sync between workers and scheduler (#37913)
Simplify some docs around airflow_local_settings (#37835)
Add section about local settings configuration (#37829)
Fix docs of BranchDayOfWeekOperator (#37813)
Write to secrets store is not supported by design (#37814)
ERD generating doc improvement (#37808)
Update incorrect config value (#37706)
Update security model to clarify Connection Editing user’s capabilities (#37688)
Fix ImportError on examples dags (#37571)

Airflow 2.8.2 (2024-02-26)¶

Significant Changes¶

The `allowed_deserialization_classes` flag now follows a glob pattern (#36147).¶

For example if one wants to add the class airflow.tests.custom_class to the allowed_deserialization_classes list, it can be done by writing the full class name (airflow.tests.custom_class) or a pattern such as the ones used in glob search (e.g., airflow.*, airflow.tests.*).

If you currently use a custom regexp path make sure to rewrite it as a glob pattern.

Alternatively, if you still wish to match it as a regexp pattern, add it under the new list allowed_deserialization_classes_regexp instead.

The audit_logs permissions have been updated for heightened security (#37501).¶

This was done under the policy that we do not want users like Viewer, Ops, and other users apart from Admin to have access to audit_logs. The intention behind this change is to restrict users with less permissions from viewing user details like First Name, Email etc. from the audit_logs when they are not permitted to.

The impact of this change is that the existing users with non admin rights won’t be able to view or access the audit_logs, both from the Browse tab or from the DAG run.

`AirflowTimeoutError` is no longer `except` by default through `Exception` (#35653).¶

The AirflowTimeoutError is now inheriting BaseException instead of AirflowException->``Exception``. See https://docs.python.org/3/library/exceptions.html#exception-hierarchy

This prevents code catching Exception from accidentally catching AirflowTimeoutError and continuing to run. AirflowTimeoutError is an explicit intent to cancel the task, and should not be caught in attempts to handle the error and return some default value.

Catching AirflowTimeoutError is still possible by explicitly except``ing ``AirflowTimeoutError or BaseException. This is discouraged, as it may allow the code to continue running even after such cancellation requests. Code that previously depended on performing strict cleanup in every situation after catching Exception is advised to use finally blocks or context managers. To perform only the cleanup and then automatically re-raise the exception. See similar considerations about catching KeyboardInterrupt in https://docs.python.org/3/library/exceptions.html#KeyboardInterrupt

Bug Fixes¶

Sort dag processing stats by last_runtime (#37302)
Allow pre-population of trigger form values via URL parameters (#37497)
Base date for fetching dag grid view must include selected run_id (#34887)
Check permissions for ImportError (#37468)
Move IMPORT_ERROR from DAG related permissions to view related permissions (#37292)
Change AirflowTaskTimeout to inherit BaseException (#35653)
Revert “Fix future DagRun rarely triggered by race conditions when max_active_runs reached its upper limit. (#31414)” (#37596)
Change margin to padding so first task can be selected (#37527)
Fix Airflow serialization for namedtuple (#37168)
Fix bug with clicking url-unsafe tags (#37395)
Set deterministic and new getter for Treeview function (#37162)
Fix permissions of parent folders for log file handler (#37310)
Fix permission check on DAGs when access_entity is specified (#37290)
Fix the value of dateTimeAttrFormat constant (#37285)
Resolve handler close race condition at triggerer shutdown (#37206)
Fixing status icon alignment for various views (#36804)
Remove superfluous @Sentry.enrich_errors (#37002)
Use execution_date= param as a backup to base date for grid view (#37018)
Handle SystemExit raised in the task. (#36986)
Revoking audit_log permission from all users except admin (#37501)
Fix broken regex for allowed_deserialization_classes (#36147)
Fix the bug that affected the DAG end date. (#36144)
Adjust node width based on task name length (#37254)
fix: PythonVirtualenvOperator crashes if any python_callable function is defined in the same source as DAG (#37165)
Fix collapsed grid width, line up selected bar with gantt (#37205)
Adjust graph node layout (#37207)
Revert the sequence of initializing configuration defaults (#37155)
Displaying “actual” try number in TaskInstance view (#34635)
Bugfix Triggering DAG with parameters is mandatory when show_trigger_form_if_no_params is enabled (#37063)
Secret masker ignores passwords with special chars (#36692)
Fix DagRuns with UPSTREAM_FAILED tasks get stuck in the backfill. (#36954)
Disable dryrun auto-fetch (#36941)
Fix copy button on a DAG run’s config (#36855)
Fix bug introduced by replacing spaces by + in run_id (#36877)
Fix webserver always redirecting to home page if user was not logged in (#36833)
REST API set description on POST to /variables endpoint (#36820)
Sanitize the conn_id to disallow potential script execution (#32867)
Fix task id copy button copying wrong id (#34904)
Fix security manager inheritance in fab provider (#36538)
Avoid pendulum.from_timestamp usage (#37160)

Miscellaneous¶

Install latest docker CLI instead of specific one (#37651)
Bump undici from 5.26.3 to 5.28.3 in /airflow/www (#37493)
Add Python 3.12 exclusions in providers/pyproject.toml (#37404)
Remove markdown from core dependencies (#37396)
Remove unused pageSize method. (#37319)
Add more-itertools as dependency of common-sql (#37359)
Replace other Python 3.11 and 3.12 deprecations (#37478)
Include airflow_pre_installed_providers.txt into sdist distribution (#37388)
Turn Pydantic into an optional dependency (#37320)
Limit universal-pathlib to < 0.2.0 (#37311)
Allow running airflow against sqlite in-memory DB for tests (#37144)
Add description to queue_when (#36997)
Updated config.yml for environment variable sql_alchemy_connect_args (#36526)
Bump min version of Alembic to 1.13.1 (#36928)
Limit flask-session to <0.6 (#36895)

Doc Only Changes¶

Fix upgrade docs to reflect true CLI flags available (#37231)
Fix a bug in fundamentals doc (#37440)
Add redirect for deprecated page (#37384)
Fix the otel config descriptions (#37229)
Update Objectstore tutorial with prereqs section (#36983)
Add more precise description on avoiding generic package/module names (#36927)
Add airflow version substitution into Docker Compose Howto (#37177)
Add clarification about DAG author capabilities to security model (#37141)
Move docs for cron basics to Authoring and Scheduling section (#37049)
Link to release notes in the upgrade docs (#36923)
Prevent templated field logic checks in __init__ of operators automatically (#33786)

Airflow 2.8.1 (2024-01-19)¶

Significant Changes¶

Target version for core dependency `pendulum` package set to 3 (#36281).¶

Support for pendulum 2.1.2 will be saved for a while, presumably until the next feature version of Airflow. It is advised to upgrade user code to use pendulum 3 as soon as possible.

Pendulum 3 introduced some subtle incompatibilities that you might rely on in your code - for example default rendering of dates is missing T in the rendered date representation, which is not ISO8601 compliant. If you rely on the default rendering of dates, you might need to adjust your code to use isoformat() method to render dates in ISO8601 format.

Airflow packaging specification follows modern Python packaging standards (#36537).¶

We standardized Airflow dependency configuration to follow latest development in Python packaging by using pyproject.toml. Airflow is now compliant with those accepted PEPs:

Also we implement multiple license files support coming from Draft, not yet accepted (but supported by hatchling) PEP: * PEP 639 Improving License Clarity with Better Package Metadata

This has almost no noticeable impact on users if they are using modern Python packaging and development tools, generally speaking Airflow should behave as it did before when installing it from PyPI and it should be much easier to install it for development purposes using pip install -e ".[devel]".

The differences from the user side are:

Airflow extras now get extras normalized to - (following PEP-685) instead of _ and . (as it was before in some extras). When you install airflow with such extras (for example dbt.core or all_dbs) you should use - instead of _ and ..

In most modern tools this will work in backwards-compatible way, but in some old version of those tools you might need to replace _ and . with -. You can also get warnings that the extra you are installing does not exist - but usually this warning is harmless and the extra is installed anyway. It is, however, recommended to change to use - in extras in your dependency specifications for all Airflow extras.

Released airflow package does not contain devel, devel-*, doc and docs-gen extras. Those extras are only available when you install Airflow from sources in --editable mode. This is because those extras are only used for development and documentation building purposes and are not needed when you install Airflow for production use. Those dependencies had unspecified and varying behaviour for released packages anyway and you were not supposed to use them in released packages.
The all and all-* extras were not always working correctly when installing Airflow using constraints because they were also considered as development-only dependencies. With this change, those dependencies are now properly handling constraints and they will install properly with constraints, pulling the right set of providers and dependencies when constraints are used.

Graphviz dependency is now an optional one, not required one (#36647).¶

The graphviz dependency has been problematic as Airflow required dependency - especially for ARM-based installations. Graphviz packages require binary graphviz libraries - which is already a limitation, but they also require to install graphviz Python bindings to be build and installed. This does not work for older Linux installation but - more importantly - when you try to install Graphviz libraries for Python 3.8, 3.9 for ARM M1 MacBooks, the packages fail to install because Python bindings compilation for M1 can only work for Python 3.10+.

This is not a breaking change technically - the CLIs to render the DAGs is still there and IF you already have graphviz installed, it will continue working as it did before. The only problem when it does not work is where you do not have graphviz installed it will raise an error and inform that you need it.

Graphviz will remain to be installed for most users:

the Airflow Image will still contain graphviz library, because it is added there as extra
when previous version of Airflow has been installed already, then graphviz library is already installed there and Airflow will continue working as it did

The only change will be a new installation of new version of Airflow from the scratch, where graphviz will need to be specified as extra or installed separately in order to enable DAG rendering option.

Bug Fixes¶

Fix airflow-scheduler exiting with code 0 on exceptions (#36800)
Fix Callback exception when a removed task is the last one in the taskinstance list (#36693)
Allow anonymous user edit/show resource when set AUTH_ROLE_PUBLIC=admin (#36750)
Better error message when sqlite URL uses relative path (#36774)
Explicit string cast required to force integer-type run_ids to be passed as strings instead of integers (#36756)
Add log lookup exception for empty op subtypes (#35536)
Remove unused index on task instance (#36737)
Fix check on subclass for typing.Union in _infer_multiple_outputs for Python 3.10+ (#36728)
Make sure multiple_outputs is inferred correctly even when using TypedDict (#36652)
Add back FAB constant in legacy security manager (#36719)
Fix AttributeError when using Dagrun.update_state (#36712)
Do not let EventsTimetable schedule past events if catchup=False (#36134)
Support encryption for triggers parameters (#36492)
Fix the type hint for tis_query in _process_executor_events (#36655)
Redirect to index when user does not have permission to access a page (#36623)
Avoid using dict as default value in call_regular_interval (#36608)
Remove option to set a task instance to running state in UI (#36518)
Fix details tab not showing when using dynamic task mapping (#36522)
Raise error when DagRun fails while running dag test (#36517)
Refactor _manage_executor_state by refreshing TIs in batch (#36502)
Add flask config: MAX_CONTENT_LENGTH (#36401)
Fix get_leaves calculation for teardown in nested group (#36456)
Stop serializing timezone-naive datetime to timezone-aware datetime with UTC tz (#36379)
Make kubernetes decorator type annotation consistent with operator (#36405)
Fix Webserver returning 500 for POST requests to api/dag/*/dagrun from anonymous user (#36275)
Fix the required access for get_variable endpoint (#36396)
Fix datetime reference in DAG.is_fixed_time_schedule (#36370)
Fix AirflowSkipException message raised by BashOperator (#36354)
Allow PythonVirtualenvOperator.skip_on_exit_code to be zero (#36361)
Increase width of execution_date input in trigger.html (#36278)
Fix logging for pausing DAG (#36182)
Stop deserializing pickle when enable_xcom_pickling is False (#36255)
Check DAG read permission before accessing DAG code (#36257)
Enable mark task as failed/success always (#36254)
Create latest log dir symlink as relative link (#36019)
Fix Python-based decorators templating (#36103)

Miscellaneous¶

Rename concurrency label to max active tasks (#36691)
Restore function scoped httpx import in file_task_handler for performance (#36753)
Add support of Pendulum 3 (#36281)
Standardize airflow build process and switch to hatchling build backend (#36537)
Get rid of pyarrow-hotfix for CVE-2023-47248 (#36697)
Make graphviz dependency optional (#36647)
Announce MSSQL support end in Airflow 2.9.0, add migration script hints (#36509)
Set min pandas dependency to 1.2.5 for all providers and airflow (#36698)
Bump follow-redirects from 1.15.3 to 1.15.4 in /airflow/www (#36700)
Provide the logger_name param to base hook in order to override the logger name (#36674)
Fix run type icon alignment with run type text (#36616)
Follow BaseHook connection fields method signature in FSHook (#36444)
Remove redundant docker decorator type annotations (#36406)
Straighten typing in workday timetable (#36296)
Use batch_is_authorized_dag to check if user has permission to read DAGs (#36279)
Replace deprecated get_accessible_dag_ids and use get_readable_dags in get_dag_warnings (#36256)

Doc Only Changes¶

Metrics tagging documentation (#36627)
In docs use logical_date instead of deprecated execution_date (#36654)
Add section about live-upgrading Airflow (#36637)
Replace numpy example with practical exercise demonstrating top-level code (#35097)
Improve and add more complete description in the architecture diagrams (#36513)
Improve the error message displayed when there is a webserver error (#36570)
Update dags.rst with information on DAG pausing (#36540)
Update installation prerequisites after upgrading to Debian Bookworm (#36521)
Add description on the ways how users should approach DB monitoring (#36483)
Add branching based on mapped task group example to dynamic-task-mapping.rst (#36480)
Add further details to replacement documentation (#36485)
Use cards when describing priority weighting methods (#36411)
Update metrics.rst for param dagrun.schedule_delay (#36404)
Update admonitions in Python operator doc to reflect sentiment (#36340)
Improve audit_logs.rst (#36213)
Remove Redshift mention from the list of managed Postgres backends (#36217)

Airflow 2.8.0 (2023-12-18)¶

Significant Changes¶

Raw HTML code in DAG docs and DAG params descriptions is disabled by default (#35460)¶

To ensure that no malicious javascript can be injected with DAG descriptions or trigger UI forms by DAG authors a new parameter webserver.allow_raw_html_descriptions was added with default value of False. If you trust your DAG authors code and want to allow using raw HTML in DAG descriptions and params, you can restore the previous behavior by setting the configuration value to True.

To ensure Airflow is secure by default, the raw HTML support in trigger UI has been super-seeded by markdown support via the description_md attribute. If you have been using description_html please migrate to description_md. The custom_html_form is now deprecated.

New Features¶

AIP-58: Add Airflow ObjectStore (AFS) (AIP-58)
Add XCom tab to Grid (#35719)
Add “literal” wrapper to disable field templating (#35017)
Add task context logging feature to allow forwarding messages to task logs (#32646, #32693, #35857)
Add Listener hooks for Datasets (#34418, #36247)
Allow override of navbar text color (#35505)
Add lightweight serialization for deltalake tables (#35462)
Add support for serialization of iceberg tables (#35456)
prev_end_date_success method access (#34528)
Add task parameter to set custom logger name (#34964)
Add pyspark decorator (#35247)
Add trigger as a valid option for the db clean command (#34908)
Add decorators for external and venv python branching operators (#35043)
Allow PythonVenvOperator using other index url (#33017)
Add Python Virtualenv Operator Caching (#33355)
Introduce a generic export for containerized executor logging (#34903)
Add ability to clear downstream tis in List Task Instances view (#34529)
Attribute clear_number to track DAG run being cleared (#34126)
Add BranchPythonVirtualenvOperator (#33356)
Allow PythonVenvOperator using other index url (#33017)
Add CLI notification commands to providers (#33116)
Use dropdown instead of buttons when there are more than 10 retries in log tab (#36025)

Improvements¶

Add multiselect to run state in grid view (#35403)
Fix warning message in Connection.get_hook in case of ImportError (#36005)
Add processor_subdir to import_error table to handle multiple dag processors (#35956)
Consolidate the call of change_state to fail or success in the core executors (#35901)
Relax mandatory requirement for start_date when schedule=None (#35356)
Use ExitStack to manage mutation of secrets_backend_list in dag.test (#34620)
improved visibility of tasks in ActionModal for taskinstance (#35810)
Create directories based on AIRFLOW_CONFIG path (#35818)
Implements JSON-string connection representation generator (#35723)
Move BaseOperatorLink into the separate module (#35032)
Set mark_end_on_close after set_context (#35761)
Move external logs links to top of react logs page (#35668)
Change terminal mode to cbreak in execute_interactive and handle SIGINT (#35602)
Make raw HTML descriptions configurable (#35460)
Allow email field to be templated (#35546)
Hide logical date and run id in trigger UI form (#35284)
Improved instructions for adding dependencies in TaskFlow (#35406)
Add optional exit code to list import errors (#35378)
Limit query result on DB rather than client in synchronize_log_template function (#35366)
Allow description to be passed in when using variables CLI (#34791)
Allow optional defaults in required fields with manual triggered dags (#31301)
Permitting airflow kerberos to run in different modes (#35146)
Refactor commands to unify daemon context handling (#34945)
Add extra fields to plugins endpoint (#34913)
Add description to pools view (#34862)
Move cli’s Connection export and Variable export command print logic to a separate function (#34647)
Extract and reuse get_kerberos_principle func from get_kerberos_principle (#34936)
Change type annotation for BaseOperatorLink.operators (#35003)
Optimise and migrate to SA2-compatible syntax for TaskReschedule (#33720)
Consolidate the permissions name in SlaMissModelView (#34949)
Add debug log saying what’s being run to EventScheduler (#34808)
Increase log reader stream loop sleep duration to 1 second (#34789)
Resolve pydantic deprecation warnings re update_forward_refs (#34657)
Unify mapped task group lookup logic (#34637)
Allow filtering event logs by attributes (#34417)
Make connection login and password TEXT (#32815)
Ban import Dataset from airflow package in codebase (#34610)
Use airflow.datasets.Dataset in examples and tests (#34605)
Enhance task status visibility (#34486)
Simplify DAG trigger UI (#34567)
Ban import AirflowException from airflow (#34512)
Add descriptions for airflow resource config parameters (#34438)
Simplify trigger name expression (#34356)
Move definition of Pod*Exceptions to pod_generator (#34346)
Add deferred tasks to the cluster_activity view Pools Slots (#34275)
heartbeat failure log message fix (#34160)
Rename variables for dag runs (#34049)
Clarify new_state in OpenAPI spec (#34056)
Remove version top-level element from docker compose files (#33831)
Remove generic trigger cancelled error log (#33874)
Use NOT EXISTS subquery instead of tuple_not_in_condition (#33527)
Allow context key args to not provide a default (#33430)
Order triggers by - TI priority_weight when assign unassigned triggers (#32318)
Add metric triggerer_heartbeat (#33320)
Allow airflow variables export to print to stdout (#33279)
Workaround failing deadlock when running backfill (#32991)
add dag_run_ids and task_ids filter for the batch task instance API endpoint (#32705)
Configurable health check threshold for triggerer (#33089)
Rework provider manager to treat Airflow core hooks like other provider hooks (#33051)
Ensure DAG-level references are filled on unmap (#33083)
Affix webserver access_denied warning to be configurable (#33022)
Add support for arrays of different data types in the Trigger Form UI (#32734)
Add a mechanism to warn if executors override existing CLI commands (#33423)

Bug Fixes¶

Account for change in UTC offset when calculating next schedule (#35887)
Add read access to pools for viewer role (#35352)
Fix gantt chart queued duration when queued_dttm is greater than start_date for deferred tasks (#35984)
Avoid crushing container when directory is not found on rm (#36050)
Update reset_user_sessions to work from either CLI or web (#36056)
Fix UI Grid error when DAG has been removed. (#36028)
Change Trigger UI to use HTTP POST in web ui (#36026)
Fix airflow db shell needing an extra key press to exit (#35982)
Change dag grid overscroll behaviour to auto (#35717)
Run triggers inline with dag test (#34642)
Add borderWidthRight to grid for Firefox scrollbar (#35346)
Fix for infinite recursion due to secrets_masker (#35048)
Fix write processor_subdir in serialized_dag table (#35661)
Reload configuration for standalone dag file processor (#35725)
Long custom operator name overflows in graph view (#35382)
Add try_number to extra links query (#35317)
Prevent assignment of non JSON serializable values to DagRun.conf dict (#35096)
Numeric values in DAG details are incorrectly rendered as timestamps (#35538)
Fix Scheduler and triggerer crashes in daemon mode when statsd metrics are enabled (#35181)
Infinite UI redirection loop after deactivating an active user (#35486)
Bug fix fetch_callback of Partial Subset DAG (#35256)
Fix DagRun data interval for DeltaDataIntervalTimetable (#35391)
Fix query in get_dag_by_pickle util function (#35339)
Fix TriggerDagRunOperator failing to trigger subsequent runs when reset_dag_run=True (#35429)
Fix weight_rule property type in mappedoperator (#35257)
Bugfix/prevent concurrency with cached venv (#35258)
Fix dag serialization (#34042)
Fix py/url-redirection by replacing request.referrer by get_redirect() (#34237)
Fix updating variables during variable imports (#33932)
Use Literal from airflow.typing_compat in Airflow core (#33821)
Always use Literal from typing_extensions (#33794)

Miscellaneous¶

Change default MySQL client to MariaDB (#36243)
Mark daskexecutor provider as removed (#35965)
Bump FAB to 4.3.10 (#35991)
Mark daskexecutor provider as removed (#35965)
Rename Connection.to_json_dict to Connection.to_dict (#35894)
Upgrade to Pydantic v2 (#35551)
Bump moto version to >= 4.2.9 (#35687)
Use pyarrow-hotfix to mitigate CVE-2023-47248 (#35650)
Bump axios from 0.26.0 to 1.6.0 in /airflow/www/ (#35624)
Make docker decorator’s type annotation consistent with operator (#35568)
Add default to navbar_text_color and rm condition in style (#35553)
Avoid initiating session twice in dag_next_execution (#35539)
Work around typing issue in examples and providers (#35494)
Enable TCH004 and TCH005 rules (#35475)
Humanize log output about retrieved DAG(s) (#35338)
Switch from Black to Ruff formatter (#35287)
Upgrade to Flask Application Builder 4.3.9 (#35085)
D401 Support (#34932, #34933)
Use requires_access to check read permission on dag instead of checking it explicitly (#34940)
Deprecate lazy import AirflowException from airflow (#34541)
View util refactoring on mapped stuff use cases (#34638)
Bump postcss from 8.4.25 to 8.4.31 in /airflow/www (#34770)
Refactor Sqlalchemy queries to 2.0 style (#34763, #34665, #32883, #35120)
Change to lazy loading of io in pandas serializer (#34684)
Use airflow.models.dag.DAG in examples (#34617)
Use airflow.exceptions.AirflowException in core (#34510)
Check that dag_ids passed in request are consistent (#34366)
Refactors to make code better (#34278, #34113, #34110, #33838, #34260, #34409, #34377, #34350)
Suspend qubole provider (#33889)
Generate Python API docs for Google ADS (#33814)
Improve importing in modules (#33812, #33811, #33810, #33806, #33807, #33805, #33804, #33803, #33801, #33799, #33800, #33797, #33798, #34406, #33808)
Upgrade Elasticsearch to 8 (#33135)

Doc Only Changes¶

Add support for tabs (and other UX components) to docs (#36041)
Replace architecture diagram of Airflow with diagrams-generated one (#36035)
Add the section describing the security model of DAG Author capabilities (#36022)
Enhance docs for zombie tasks (#35825)
Reflect drop/add support of DB Backends versions in documentation (#35785)
More detail on mandatory task arguments (#35740)
Indicate usage of the re2 regex engine in the .airflowignore documentation. (#35663)
Update best-practices.rst (#35692)
Update dag-run.rst to mention Airflow’s support for extended cron syntax through croniter (#35342)
Update webserver.rst to include information of supported OAuth2 providers (#35237)
Add back dag_run to docs (#35142)
Fix rst code block format (#34708)
Add typing to concrete taskflow examples (#33417)
Add concrete examples for accessing context variables from TaskFlow tasks (#33296)
Fix links in security docs (#33329)

Airflow 2.7.3 (2023-11-06)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Fix pre-mature evaluation of tasks in mapped task group (#34337)
Add TriggerRule missing value in rest API (#35194)
Fix Scheduler crash looping when dagrun creation fails (#35135)
Fix test connection with codemirror and extra (#35122)
Fix usage of cron-descriptor since BC in v1.3.0 (#34836)
Fix get_plugin_info for class based listeners. (#35022)
Some improvements/fixes for dag_run and task_instance endpoints (#34942)
Fix the dags count filter in webserver home page (#34944)
Return only the TIs of the readable dags when ~ is provided as a dag_id (#34939)
Fix triggerer thread crash in daemon mode (#34931)
Fix wrong plugin schema (#34858)
Use DAG timezone in TimeSensorAsync (#33406)
Mark tasks with all_skipped trigger rule as skipped if any task is in upstream_failed state (#34392)
Add read only validation to read only fields (#33413)

Misc/Internal¶

Improve testing harness to separate DB and non-DB tests (#35160, #35333)
Add pytest db_test markers to our tests (#35264)
Add pip caching for faster build (#35026)
Upper bound pendulum requirement to <3.0 (#35336)
Limit sentry_sdk to 1.33.0 (#35298)
Fix subtle bug in mocking processor_agent in our tests (#35221)
Bump @babel/traverse from 7.16.0 to 7.23.2 in /airflow/www (#34988)
Bump undici from 5.19.1 to 5.26.3 in /airflow/www (#34971)
Remove unused set from SchedulerJobRunner (#34810)
Remove warning about max_tis per query > parallelism (#34742)
Improve modules import in Airflow core by moving some of them into a type-checking block (#33755)
Fix tests to respond to Python 3.12 handling of utcnow in sentry-sdk (#34946)
Add connexion<3.0 upper bound (#35218)
Limit Airflow to < 3.12 (#35123)
update moto version (#34938)
Limit WTForms to below 3.1.0 (#34943)

Doc Only Changes¶

Fix variables substitution in Airflow Documentation (#34462)
Added example for defaults in conn.extras (#35165)
Update datasets.rst issue with running example code (#35035)
Remove mysql-connector-python from recommended MySQL driver (#34287)
Fix syntax error in task dependency set_downstream example (#35075)
Update documentation to enable test connection (#34905)
Update docs errors.rst - Mention sentry “transport” configuration option (#34912)
Update dags.rst to put SubDag deprecation note right after the SubDag section heading (#34925)
Add info on getting variables and config in custom secrets backend (#34834)
Document BaseExecutor interface in more detail to help users in writing custom executors (#34324)
Fix broken link to airflow_local_settings.py template (#34826)
Fixes python_callable function assignment context kwargs example in params.rst (#34759)
Add missing multiple_outputs=True param in the TaskFlow example (#34812)
Remove extraneous '>' in provider section name (#34813)
Fix imports in extra link documentation (#34547)

Airflow 2.7.2 (2023-10-12)¶

Significant Changes¶

No significant changes

Bug Fixes¶

Check if the lower of provided values are sensitives in config endpoint (#34712)
Add support for ZoneInfo and generic UTC to fix datetime serialization (#34683, #34804)
Fix AttributeError: ‘Select’ object has no attribute ‘count’ during the airflow db migrate command (#34348)
Make dry run optional for patch task instance (#34568)
Fix non deterministic datetime deserialization (#34492)
Use iterative loop to look for mapped parent (#34622)
Fix is_parent_mapped value by checking if any of the parent taskgroup is mapped (#34587)
Avoid top-level airflow import to avoid circular dependency (#34586)
Add more exemptions to lengthy metric list (#34531)
Fix dag warning endpoint permissions (#34355)
Fix task instance access issue in the batch endpoint (#34315)
Correcting wrong time showing in grid view (#34179)
Fix www cluster_activity view not loading due to standaloneDagProcessor templating (#34274)
Set loglevel=DEBUG in ‘Not syncing DAG-level permissions’ (#34268)
Make param validation consistent for DAG validation and triggering (#34248)
Ensure details panel is shown when any tab is selected (#34136)
Fix issues related to access_control={} (#34114)
Fix not found ab_user table in the CLI session (#34120)
Fix FAB-related logging format interpolation (#34139)
Fix query bug in next_run_datasets_summary endpoint (#34143)
Fix for TaskGroup toggles for duplicated labels (#34072)
Fix the required permissions to clear a TI from the UI (#34123)
Reuse _run_task_session in mapped render_template_fields (#33309)
Fix scheduler logic to plan new dag runs by ignoring manual runs (#34027)
Add missing audit logs for Flask actions add, edit and delete (#34090)
Hide Irrelevant Dag Processor from Cluster Activity Page (#33611)
Remove infinite animation for pinwheel, spin for 1.5s (#34020)
Restore rendering of provider configuration with version_added (#34011)

Doc Only Changes¶

Clarify audit log permissions (#34815)
Add explanation for Audit log users (#34814)
Import AUTH_REMOTE_USER from FAB in WSGI middleware example (#34721)
Add information about drop support MsSQL as DB Backend in the future (#34375)
Document how to use the system’s timezone database (#34667)
Clarify what landing time means in doc (#34608)
Fix screenshot in dynamic task mapping docs (#34566)
Fix class reference in Public Interface documentation (#34454)
Clarify var.value.get and var.json.get usage (#34411)
Schedule default value description (#34291)
Docs for triggered_dataset_event (#34410)
Add DagRun events (#34328)
Provide tabular overview about trigger form param types (#34285)
Add link to Amazon Provider Configuration in Core documentation (#34305)
Add “security infrastructure” paragraph to security model (#34301)
Change links to SQLAlchemy 1.4 (#34288)
Add SBOM entry in security documentation (#34261)
Added more example code for XCom push and pull (#34016)
Add state utils to Public Airflow Interface (#34059)
Replace markdown style link with rst style link (#33990)
Fix broken link to the “UPDATING.md” file (#33583)

Misc/Internal¶

Update min-sqlalchemy version to account for latest features used (#34293)
Fix SesssionExemptMixin spelling (#34696)
Restrict astroid version < 3 (#34658)
Fail dag test if defer without triggerer (#34619)
Fix connections exported output (#34640)
Don’t run isort when creating new alembic migrations (#34636)
Deprecate numeric type python version in PythonVirtualEnvOperator (#34359)
Refactor os.path.splitext to Path.* (#34352, #33669)
Replace = by is for type comparison (#33983)
Refactor integer division (#34180)
Refactor: Simplify comparisons (#34181)
Refactor: Simplify string generation (#34118)
Replace unnecessary dict comprehension with dict() in core (#33858)
Change “not all” to “any” for ease of readability (#34259)
Replace assert by if…raise in code (#34250, #34249)
Move default timezone to except block (#34245)
Combine similar if logic in core (#33988)
Refactor: Consolidate import and usage of random (#34108)
Consolidate importing of os.path.* (#34060)
Replace sequence concatenation by unpacking in Airflow core (#33934)
Refactor unneeded ‘continue’ jumps around the repo (#33849, #33845, #33846, #33848, #33839, #33844, #33836, #33842)
Remove [project] section from pyproject.toml (#34014)
Move the try outside the loop when this is possible in Airflow core (#33975)
Replace loop by any when looking for a positive value in core (#33985)
Do not create lists we don’t need (#33519)
Remove useless string join from core (#33969)
Add TCH001 and TCH002 rules to pre-commit to detect and move type checking modules (#33865)
Add cancel_trigger_ids to to_cancel dequeue in batch (#33944)
Avoid creating unnecessary list when parsing stats datadog tags (#33943)
Replace dict.items by dict.values when key is not used in core (#33940)
Replace lambdas with comprehensions (#33745)
Improve modules import in Airflow core by some of them into a type-checking block (#33755)
Refactor: remove unused state - SHUTDOWN (#33746, #34063, #33893)
Refactor: Use in-place .sort() (#33743)
Use literal dict instead of calling dict() in Airflow core (#33762)
remove unnecessary map and rewrite it using list in Airflow core (#33764)
Replace lambda by a def method in Airflow core (#33758)
Replace type func by isinstance in fab_security manager (#33760)
Replace single quotes by double quotes in all Airflow modules (#33766)
Merge multiple isinstance calls for the same object in a single call (#33767)
Use a single statement with multiple contexts instead of nested statements in core (#33769)
Refactor: Use f-strings (#33734, #33455)
Refactor: Use random.choices (#33631)
Use str.splitlines() to split lines (#33592)
Refactor: Remove useless str() calls (#33629)
Refactor: Improve detection of duplicates and list sorting (#33675)
Simplify conditions on len() (#33454)

Airflow 2.7.1 (2023-09-07)¶

Significant Changes¶

CronTriggerTimetable is now less aggressive when trying to skip a run (#33404)¶

When setting catchup=False, CronTriggerTimetable no longer skips a run if the scheduler does not query the timetable immediately after the previous run has been triggered.

This should not affect scheduling in most cases, but can change the behaviour if a DAG is paused-unpaused to manually skip a run. Previously, the timetable (with catchup=False) would only start a run after a DAG is unpaused, but with this change, the scheduler would try to look at little bit back to schedule the previous run that covers a part of the period when the DAG was paused. This means you will need to keep a DAG paused longer (namely, for the entire cron period to pass) to really skip a run.

Note that this is also the behaviour exhibited by various other cron-based scheduling tools, such as anacron.

`conf.set()` becomes case insensitive to match `conf.get()` behavior (#33452)¶

Also, conf.get() will now break if used with non-string parameters.

conf.set(section, key, value) used to be case sensitive, i.e. conf.set("SECTION", "KEY", value) and conf.set("section", "key", value) were stored as two distinct configurations. This was inconsistent with the behavior of conf.get(section, key), which was always converting the section and key to lower case.

As a result, configuration options set with upper case characters in the section or key were unreachable. That’s why we are now converting section and key to lower case in conf.set too.

We also changed a bit the behavior of conf.get(). It used to allow objects that are not strings in the section or key. Doing this will now result in an exception. For instance, conf.get("section", 123) needs to be replaced with conf.get("section", "123").

Bug Fixes¶

Ensure that tasks wait for running indirect setup (#33903)
Respect “soft_fail” for core async sensors (#33403)
Differentiate 0 and unset as a default param values (#33965)
Raise 404 from Variable PATCH API if variable is not found (#33885)
Fix MappedTaskGroup tasks not respecting upstream dependency (#33732)
Add limit 1 if required first value from query result (#33672)
Fix UI DAG counts including deleted DAGs (#33778)
Fix cleaning zombie RESTARTING tasks (#33706)
SECURITY_MANAGER_CLASS should be a reference to class, not a string (#33690)
Add back get_url_for_login in security manager (#33660)
Fix 2.7.0 db migration job errors (#33652)
Set context inside templates (#33645)
Treat dag-defined access_control as authoritative if defined (#33632)
Bind engine before attempting to drop archive tables (#33622)
Add a fallback in case no first name and last name are set (#33617)
Sort data before groupby in TIS duration calculation (#33535)
Stop adding values to rendered templates UI when there is no dagrun (#33516)
Set strict to True when parsing dates in webserver views (#33512)
Use dialect.name in custom SA types (#33503)
Do not return ongoing dagrun when a end_date is less than utcnow (#33488)
Fix a bug in formatDuration method (#33486)
Make conf.set case insensitive (#33452)
Allow timetable to slightly miss catchup cutoff (#33404)
Respect soft_fail argument when poke is called (#33401)
Create a new method used to resume the task in order to implement specific logic for operators (#33424)
Fix DagFileProcessor interfering with dags outside its processor_subdir (#33357)
Remove the unnecessary <br> text in Provider’s view (#33326)
Respect soft_fail argument when ExternalTaskSensor runs in deferrable mode (#33196)
Fix handling of default value and serialization of Param class (#33141)
Check if the dynamically-added index is in the table schema before adding (#32731)
Fix rendering the mapped parameters when using expand_kwargs method (#32272)
Fix dependencies for celery and opentelemetry for Python 3.8 (#33579)

Misc/Internal¶

Bring back Pydantic 1 compatibility (#34081, #33998)
Use a trimmed version of README.md for PyPI (#33637)
Upgrade to Pydantic 2 (#33956)
Reorganize devel_only extra in Airflow’s setup.py (#33907)
Bumping FAB to 4.3.4 in order to fix issues with filters (#33931)
Add minimum requirement for sqlalchemy to 1.4.24 (#33892)
Update version_added field for configs in config file (#33509)
Replace OrderedDict with plain dict (#33508)
Consolidate import and usage of itertools (#33479)
Static check fixes (#33462)
Import utc from datetime and normalize its import (#33450)
D401 Support (#33352, #33339, #33337, #33336, #33335, #33333, #33338)
Fix some missing type hints (#33334)
D205 Support - Stragglers (#33301, #33298, #33297)
Refactor: Simplify code (#33160, #33270, #33268, #33267, #33266, #33264, #33292, #33453, #33476, #33567, #33568, #33480, #33753, #33520, #33623)
Fix Pydantic warning about orm_mode rename (#33220)
Add MySQL 8.1 to supported versions. (#33576)
Remove Pydantic limitation for version < 2 (#33507)

Doc only changes¶

Add documentation explaining template_ext (and how to override it) (#33735)
Explain how users can check if python code is top-level (#34006)
Clarify that DAG authors can also run code in DAG File Processor (#33920)
Fix broken link in Modules Management page (#33499)
Fix secrets backend docs (#33471)
Fix config description for base_log_folder (#33388)

Airflow 2.7.0 (2023-08-18)¶

Significant Changes¶

Remove Python 3.7 support (#30963)¶

As of now, Python 3.7 is no longer supported by the Python community. Therefore, to use Airflow 2.7.0, you must ensure your Python version is either 3.8, 3.9, 3.10, or 3.11.

Old Graph View is removed (#32958)¶

The old Graph View is removed. The new Graph View is the default view now.

The trigger UI form is skipped in web UI if no parameters are defined in a DAG (#33351)¶

If you are using dag_run.conf dictionary and web UI JSON entry to run your DAG you should either:

Add params to your DAG
Enable the new configuration show_trigger_form_if_no_params to bring back old behaviour

The “db init”, “db upgrade” commands and “[database] load_default_connections” configuration options are deprecated (#33136).¶

Instead, you should use “airflow db migrate” command to create or upgrade database. This command will not create default connections. In order to create default connections you need to run “airflow connections create-default-connections” explicitly, after running “airflow db migrate”.

In case of SMTP SSL connection, the context now uses the “default” context (#33070)¶

The “default” context is Python’s default_ssl_contest instead of previously used “none”. The default_ssl_context provides a balance between security and compatibility but in some cases, when certificates are old, self-signed or misconfigured, it might not work. This can be configured by setting “ssl_context” in “email” configuration of Airflow.

Setting it to “none” brings back the “none” setting that was used in Airflow 2.6 and before, but it is not recommended due to security reasons ad this setting disables validation of certificates and allows MITM attacks.

Disable default allowing the testing of connections in UI, API and CLI(#32052)¶

For security reasons, the test connection functionality is disabled by default across Airflow UI, API and CLI. The availability of the functionality can be controlled by the test_connection flag in the core section of the Airflow configuration (airflow.cfg). It can also be controlled by the environment variable AIRFLOW__CORE__TEST_CONNECTION.

The following values are accepted for this config param: 1. Disabled: Disables the test connection functionality and disables the Test Connection button in the UI.

This is also the default value set in the Airflow configuration. 2. Enabled: Enables the test connection functionality and activates the Test Connection button in the UI.

3. Hidden: Disables the test connection functionality and hides the Test Connection button in UI.

For more information on capabilities of users, see the documentation: https://airflow.apache.org/docs/apache-airflow/stable/security/security_model.html#capabilities-of-authenticated-ui-users It is strongly advised to not enable the feature until you make sure that only highly trusted UI/API users have “edit connection” permissions.

The `xcomEntries` API disables support for the `deserialize` flag by default (#32176)¶

For security reasons, the /dags/*/dagRuns/*/taskInstances/*/xcomEntries/* API endpoint now disables the deserialize option to deserialize arbitrary XCom values in the webserver. For backward compatibility, server admins may set the [api] enable_xcom_deserialize_support config to True to enable the flag and restore backward compatibility.

However, it is strongly advised to not enable the feature, and perform deserialization at the client side instead.

Change of the default Celery application name (#32526)¶

Default name of the Celery application changed from airflow.executors.celery_executor to airflow.providers.celery.executors.celery_executor.

You should change both your configuration and Health check command to use the new name:

in configuration (celery_app_name configuration in celery section) use airflow.providers.celery.executors.celery_executor
in your Health check command use airflow.providers.celery.executors.celery_executor.app

The default value for `scheduler.max_tis_per_query` is changed from 512 to 16 (#32572)¶

This change is expected to make the Scheduler more responsive.

scheduler.max_tis_per_query needs to be lower than core.parallelism. If both were left to their default value previously, the effective default value of scheduler.max_tis_per_query was 32 (because it was capped at core.parallelism).

To keep the behavior as close as possible to the old config, one can set scheduler.max_tis_per_query = 0, in which case it’ll always use the value of core.parallelism.

Some executors have been moved to corresponding providers (#32767)¶

In order to use the executors, you need to install the providers:

for Celery executors you need to install apache-airflow-providers-celery package >= 3.3.0
for Kubernetes executors you need to install apache-airflow-providers-cncf-kubernetes package >= 7.4.0
For Dask executors you need to install apache-airflow-providers-daskexecutor package in any version

You can achieve it also by installing airflow with [celery], [cncf.kubernetes], [daskexecutor] extras respectively.

Users who base their images on the apache/airflow reference image (not slim) should be unaffected - the base reference image comes with all the three providers installed.

Improvement Changes¶

PostgreSQL only improvement: Added index on taskinstance table (#30762)¶

This index seems to have great positive effect in a setup with tens of millions such rows.

New Features¶

Add OpenTelemetry to Airflow (AIP-49)
Trigger Button - Implement Part 2 of AIP-50 (#31583)
Removing Executor Coupling from Core Airflow (AIP-51)
Automatic setup and teardown tasks (AIP-52)
OpenLineage in Airflow (AIP-53)
Experimental: Add a cache to Variable and Connection when called at dag parsing time (#30259)
Enable pools to consider deferred tasks (#32709)
Allows to choose SSL context for SMTP connection (#33070)
New gantt tab (#31806)
Load plugins from providers (#32692)
Add BranchExternalPythonOperator (#32787, #33360)
Add option for storing configuration description in providers (#32629)
Introduce Heartbeat Parameter to Allow Per-LocalTaskJob Configuration (#32313)
Add Executors discovery and documentation (#32532)
Add JobState for job state constants (#32549)
Add config to disable the ‘deserialize’ XCom API flag (#32176)
Show task instance in web UI by custom operator name (#31852)
Add default_deferrable config (#31712)
Introducing AirflowClusterPolicySkipDag exception (#32013)
Use reactflow for datasets graph (#31775)
Add an option to load the dags from db for command tasks run (#32038)
Add version of chain which doesn’t require matched lists (#31927)
Use operator_name instead of task_type in UI (#31662)
Add --retry and --retry-delay to airflow db check (#31836)
Allow skipped task state task_instance_schema.py (#31421)
Add a new config for celery result_backend engine options (#30426)
UI Add Cluster Activity Page (#31123, #32446)
Adding keyboard shortcuts to common actions (#30950)
Adding more information to kubernetes executor logs (#29929)
Add support for configuring custom alembic file (#31415)
Add running and failed status tab for DAGs on the UI (#30429)
Add multi-select, proposals and labels for trigger form (#31441)
Making webserver config customizable (#29926)
Render DAGCode in the Grid View as a tab (#31113)
Add rest endpoint to get option of configuration (#31056)
Add section query param in get config rest API (#30936)
Create metrics to track Scheduled->Queued->Running task state transition times (#30612)
Mark Task Groups as Success/Failure (#30478)
Add CLI command to list the provider trigger info (#30822)
Add Fail Fast feature for DAGs (#29406)

Improvements¶

Improve graph nesting logic (#33421)
Configurable health check threshold for triggerer (#33089, #33084)
add dag_run_ids and task_ids filter for the batch task instance API endpoint (#32705)
Ensure DAG-level references are filled on unmap (#33083)
Add support for arrays of different data types in the Trigger Form UI (#32734)
Always show gantt and code tabs (#33029)
Move listener success hook to after SQLAlchemy commit (#32988)
Rename db upgrade to db migrate and add connections create-default-connections (#32810, #33136)
Remove old gantt chart and redirect to grid views gantt tab (#32908)
Adjust graph zoom based on selected task (#32792)
Call listener on_task_instance_running after rendering templates (#32716)
Display execution_date in graph view task instance tooltip. (#32527)
Allow configuration to be contributed by providers (#32604, #32755, #32812)
Reduce default for max TIs per query, enforce <= parallelism (#32572)
Store config description in Airflow configuration object (#32669)
Use isdisjoint instead of not intersection (#32616)
Speed up calculation of leaves and roots for task groups (#32592)
Kubernetes Executor Load Time Optimizations (#30727)
Save DAG parsing time if dag is not schedulable (#30911)
Updates health check endpoint to include dag_processor status. (#32382)
Disable default allowing the testing of connections in UI, API and CLI (#32052, #33342)
Fix config var types under the scheduler section (#32132)
Allow to sort Grid View alphabetically (#32179)
Add hostname to triggerer metric [triggers.running] (#32050)
Improve DAG ORM cleanup code (#30614)
TriggerDagRunOperator: Add wait_for_completion to template_fields (#31122)
Open links in new tab that take us away from Airflow UI (#32088)
Only show code tab when a task is not selected (#31744)
Add descriptions for celery and dask cert configs (#31822)
PythonVirtualenvOperator termination log in alert (#31747)
Migration of all DAG details to existing grid view dag details panel (#31690)
Add a diagram to help visualize timer metrics (#30650)
Celery Executor load time optimizations (#31001)
Update code style for airflow db commands to SQLAlchemy 2.0 style (#31486)
Mark uses of md5 as “not-used-for-security” in FIPS environments (#31171)
Add pydantic support to serde (#31565)
Enable search in note column in DagRun and TaskInstance (#31455)
Save scheduler execution time by adding new Index idea for dag_run (#30827)
Save scheduler execution time by caching dags (#30704)
Support for sorting DAGs by Last Run Date in the web UI (#31234)
Better typing for Job and JobRunners (#31240)
Add sorting logic by created_date for fetching triggers (#31151)
Remove DAGs.can_create on access control doc, adjust test fixture (#30862)
Split Celery logs into stdout/stderr (#30485)
Decouple metrics clients and validators into their own modules (#30802)
Description added for pagination in get_log api (#30729)
Optimize performance of scheduling mapped tasks (#30372)
Add sentry transport configuration option (#30419)
Better message on deserialization error (#30588)

Bug Fixes¶

Remove user sessions when resetting password (#33347)
Gantt chart: Use earliest/oldest ti dates if different than dag run start/end (#33215)
Fix virtualenv detection for Python virtualenv operator (#33223)
Correctly log when there are problems trying to chmod airflow.cfg (#33118)
Pass app context to webserver_config.py (#32759)
Skip served logs for non-running task try (#32561)
Fix reload gunicorn workers (#32102)
Fix future DagRun rarely triggered by race conditions when max_active_runs reached its upper limit. (#31414)
Fix BaseOperator get_task_instances query (#33054)
Fix issue with using the various state enum value in logs (#33065)
Use string concatenation to prepend base URL for log_url (#33063)
Update graph nodes with operator style attributes (#32822)
Affix webserver access_denied warning to be configurable (#33022)
Only load task action modal if user can edit (#32992)
OpenAPI Spec fix nullable alongside $ref (#32887)
Make the decorators of PythonOperator sub-classes extend its decorator (#32845)
Fix check if virtualenv is installed in PythonVirtualenvOperator (#32939)
Unwrap Proxy before checking __iter__ in is_container() (#32850)
Override base log folder by using task handler’s base_log_folder (#32781)
Catch arbitrary exception from run_job to prevent zombie scheduler (#32707)
Fix depends_on_past work for dynamic tasks (#32397)
Sort extra_links for predictable order in UI. (#32762)
Fix prefix group false graph (#32764)
Fix bad delete logic for dagruns (#32684)
Fix bug in prune_dict where empty dict and list would be removed even in strict mode (#32573)
Add explicit browsers list and correct rel for blank target links (#32633)
Handle returned None when multiple_outputs is True (#32625)
Fix returned value when ShortCircuitOperator condition is falsy and there is not downstream tasks (#32623)
Fix returned value when ShortCircuitOperator condition is falsy (#32569)
Fix rendering of dagRunTimeout (#32565)
Fix permissions on /blocked endpoint (#32571)
Bugfix, prevent force of unpause on trigger DAG (#32456)
Fix data interval in cli.dags.trigger command output (#32548)
Strip whitespaces from airflow connections form (#32292)
Add timedelta support for applicable arguments of sensors (#32515)
Fix incorrect default on readonly property in our API (#32510)
Add xcom map_index as a filter to xcom endpoint (#32453)
Fix CLI commands when custom timetable is used (#32118)
Use WebEncoder to encode DagRun.conf in DagRun’s list view (#32385)
Fix logic of the skip_all_except method (#31153)
Ensure dynamic tasks inside dynamic task group only marks the (#32354)
Handle the cases that webserver.expose_config is set to non-sensitive-only instead of boolean value (#32261)
Add retry functionality for handling process termination caused by database network issues (#31998)
Adapt Notifier for sla_miss_callback (#31887)
Fix XCOM view (#31807)
Fix for “Filter dags by tag” flickering on initial load of dags.html (#31578)
Fix where expanding resizer would not expanse grid view (#31581)
Fix MappedOperator-BaseOperator attr sync check (#31520)
Always pass named type_ arg to drop_constraint (#31306)
Fix bad drop_constraint call in migrations (#31302)
Resolving problems with redesigned grid view (#31232)
Support requirepass redis sentinel (#30352)
Fix webserver crash when calling get /config (#31057)

Misc/Internal¶

Modify pathspec version restriction (#33349)
Refactor: Simplify code in dag_processing (#33161)
For now limit Pydantic to < 2.0.0 (#33235)
Refactor: Simplify code in models (#33181)
Add elasticsearch group to pre-2.7 defaults (#33166)
Refactor: Simplify dict manipulation in airflow/cli (#33159)
Remove redundant dict.keys() call (#33158)
Upgrade ruff to latest 0.0.282 version in pre-commits (#33152)
Move openlineage configuration to provider (#33124)
Replace State by TaskInstanceState in Airflow executors (#32627)
Get rid of Python 2 numeric relics (#33050)
Remove legacy dag code (#33058)
Remove legacy task instance modal (#33060)
Remove old graph view (#32958)
Move CeleryExecutor to the celery provider (#32526, #32628)
Move all k8S classes to cncf.kubernetes provider (#32767, #32891)
Refactor existence-checking SQL to helper (#32790)
Extract Dask executor to new daskexecutor provider (#32772)
Remove atlas configuration definition (#32776)
Add Redis task handler (#31855)
Move writing configuration for webserver to main (webserver limited) (#32766)
Improve getting the query count in Airflow API endpoints (#32630)
Remove click upper bound (#32634)
Add D400 pydocstyle check - core Airflow only (#31297)
D205 Support (#31742, #32575, #32213, #32212, #32591, #32449, #32450)
Bump word-wrap from 1.2.3 to 1.2.4 in /airflow/www (#32680)
Strong-type all single-state enum values (#32537)
More strong typed state conversion (#32521)
SQL query improvements in utils/db.py (#32518)
Bump semver from 6.3.0 to 6.3.1 in /airflow/www (#32506)
Bump jsonschema version to 4.18.0 (#32445)
Bump stylelint from 13.13.1 to 15.10.1 in /airflow/www (#32435)
Bump tough-cookie from 4.0.0 to 4.1.3 in /airflow/www (#32443)
upgrade flask-appbuilder (#32054)
Support Pydantic 2 (#32366)
Limit click until we fix mypy issues (#32413)
A couple of minor cleanups (#31890)
Replace State usages with strong-typed enums (#31735)
Upgrade ruff to 0.272 (#31966)
Better error message when serializing callable without name (#31778)
Improve the views module a bit (#31661)
Remove asynctest (#31664)
Refactor sqlalchemy queries to 2.0 style (#31569, #31772, #32350, #32339, #32474, #32645)
Remove Python 3.7 support (#30963)
Bring back min-airflow-version for preinstalled providers (#31469)
Docstring improvements (#31375)
Improve typing in SchedulerJobRunner (#31285)
Upgrade ruff to 0.0.262 (#30809)
Upgrade to MyPy 1.2.0 (#30687)

Docs only changes¶

Clarify UI user types in security model (#33021)
Add links to DAGRun / DAG / Task in templates-ref.rst (#33013)
Add docs of how to test for DAG Import Errors (#32811)
Clean-up of our new security page (#32951)
Cleans up Extras reference page (#32954)
Update Dag trigger API and command docs (#32696)
Add deprecation info to the Airflow modules and classes docstring (#32635)
Formatting installation doc to improve readability (#32502)
Fix triggerer HA doc (#32454)
Add type annotation to code examples (#32422)
Document cron and delta timetables (#32392)
Update index.rst doc to correct grammar (#32315)
Fixing small typo in python.py (#31474)
Separate out and clarify policies for providers (#30657)
Fix docs: add an “apache” prefix to pip install (#30681)

Airflow 2.6.3 (2023-07-10)¶

Significant Changes¶

Default allowed pattern of a run_id has been changed to `^[A-Za-z0-9_.~:+-]+$` (#32293).¶

Previously, there was no validation on the run_id string. There is now a validation regex that can be set by configuring allowed_run_id_pattern in scheduler section.

Bug Fixes¶

Use linear time regular expressions (#32303)
Fix triggerers alive check and add a new conf for triggerer heartbeat rate (#32123)
Catch the exception that triggerer initialization failed (#31999)
Hide sensitive values from extra in connection edit form (#32309)
Sanitize DagRun.run_id and allow flexibility (#32293)
Add triggerer canceled log (#31757)
Fix try number shown in the task view (#32361)
Retry transactions on occasional deadlocks for rendered fields (#32341)
Fix behaviour of LazyDictWithCache when import fails (#32248)
Remove executor_class from Job - fixing backfill for custom executors (#32219)
Fix bugged singleton implementation (#32218)
Use mapIndex to display extra links per mapped task. (#32154)
Ensure that main triggerer thread exits if the async thread fails (#32092)
Use re2 for matching untrusted regex (#32060)
Render list items in rendered fields view (#32042)
Fix hashing of dag_dependencies in serialized dag (#32037)
Return None if an XComArg fails to resolve in a multiple_outputs Task (#32027)
Check for DAG ID in query param from url as well as kwargs (#32014)
Flash an error message instead of failure in rendered-templates when map index is not found (#32011)
Fix ExternalTaskSensor when there is no task group TIs for the current execution date (#32009)
Fix number param html type in trigger template (#31980, #31946)
Fix masking nested variable fields (#31964)
Fix operator_extra_links property serialization in mapped tasks (#31904)
Decode old-style nested Xcom value (#31866)
Add a check for trailing slash in webserver base_url (#31833)
Fix connection uri parsing when the host includes a scheme (#31465)
Fix database session closing with xcom_pull and inlets (#31128)
Fix DAG’s on_failure_callback is not invoked when task failed during testing dag. (#30965)
Fix airflow module version check when using ExternalPythonOperator and debug logging level (#30367)

Misc/Internal¶

Fix task.sensor annotation in type stub (#31954)
Limit Pydantic to < 2.0.0 until we solve 2.0.0 incompatibilities (#32312)
Fix Pydantic 2 pickiness about model definition (#32307)

Doc only changes¶

Add explanation about tag creation and cleanup (#32406)
Minor updates to docs (#32369, #32315, #32310, #31794)
Clarify Listener API behavior (#32269)
Add information for users who ask for requirements (#32262)
Add links to DAGRun / DAG / Task in Templates Reference (#32245)
Add comment to warn off a potential wrong fix (#32230)
Add a note that we’ll need to restart triggerer to reflect any trigger change (#32140)
Adding missing hyperlink to the tutorial documentation (#32105)
Added difference between Deferrable and Non-Deferrable Operators (#31840)
Add comments explaining need for special “trigger end” log message (#31812)
Documentation update on Plugin updates. (#31781)
Fix SemVer link in security documentation (#32320)
Update security model of Airflow (#32098)
Update references to restructured documentation from Airflow core (#32282)
Separate out advanced logging configuration (#32131)
Add ™ to Airflow in prominent places (#31977)

Airflow 2.6.2 (2023-06-17)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Cascade update of TaskInstance to TaskMap table (#31445)
Fix Kubernetes executors detection of deleted pods (#31274)
Use keyword parameters for migration methods for mssql (#31309)
Control permissibility of driver config in extra from airflow.cfg (#31754)
Fixing broken links in openapi/v1.yaml (#31619)
Hide old alert box when testing connection with different value (#31606)
Add TriggererStatus to OpenAPI spec (#31579)
Resolving issue where Grid won’t un-collapse when Details is collapsed (#31561)
Fix sorting of tags (#31553)
Add the missing map_index to the xcom key when skipping downstream tasks (#31541)
Fix airflow users delete CLI command (#31539)
Include triggerer health status in Airflow /health endpoint (#31529)
Remove dependency already registered for this task warning (#31502)
Use kube_client over default CoreV1Api for deleting pods (#31477)
Ensure min backoff in base sensor is at least 1 (#31412)
Fix max_active_tis_per_dagrun for Dynamic Task Mapping (#31406)
Fix error handling when pre-importing modules in DAGs (#31401)
Fix dropdown default and adjust tutorial to use 42 as default for proof (#31400)
Fix crash when clearing run with task from normal to mapped (#31352)
Make BaseJobRunner a generic on the job class (#31287)
Fix url_for_asset fallback and 404 on DAG Audit Log (#31233)
Don’t present an undefined execution date (#31196)
Added spinner activity while the logs load (#31165)
Include rediss to the list of supported URL schemes (#31028)
Optimize scheduler by skipping “non-schedulable” DAGs (#30706)
Save scheduler execution time during search for queued dag_runs (#30699)
Fix ExternalTaskSensor to work correctly with task groups (#30742)
Fix DAG.access_control can’t sync when clean access_control (#30340)
Fix failing get_safe_url tests for latest Python 3.8 and 3.9 (#31766)
Fix typing for POST user endpoint (#31767)
Fix wrong update for nested group default args (#31776)
Fix overriding default_args in nested task groups (#31608)
Mark [secrets] backend_kwargs as a sensitive config (#31788)
Executor events are not always “exited” here (#30859)
Validate connection IDs (#31140)

Misc/Internal¶

Add Python 3.11 support (#27264)
Replace unicodecsv with standard csv library (#31693)
Bring back unicodecsv as dependency of Airflow (#31814)
Remove found_descendents param from get_flat_relative_ids (#31559)
Fix typing in external task triggers (#31490)
Wording the next and last run DAG columns better (#31467)
Skip auto-document things with :meta private: (#31380)
Add an example for sql_alchemy_connect_args conf (#31332)
Convert dask upper-binding into exclusion (#31329)
Upgrade FAB to 4.3.1 (#31203)
Added metavar and choices to –state flag in airflow dags list-jobs CLI for suggesting valid state arguments. (#31308)
Use only one line for tmp dir log (#31170)
Rephrase comment in setup.py (#31312)
Add fullname to owner on logging (#30185)
Make connection id validation consistent across interface (#31282)
Use single source of truth for sensitive config items (#31820)

Doc only changes¶

Add docstring and signature for _read_remote_logs (#31623)
Remove note about triggerer being 3.7+ only (#31483)
Fix version support information (#31468)
Add missing BashOperator import to documentation example (#31436)
Fix task.branch error caused by incorrect initial parameter (#31265)
Update callbacks documentation (errors and context) (#31116)
Add an example for dynamic task mapping with non-TaskFlow operator (#29762)
Few doc fixes - links, grammar and wording (#31719)
Add description in a few more places about adding airflow to pip install (#31448)
Fix table formatting in docker build documentation (#31472)
Update documentation for constraints installation (#31882)

Airflow 2.6.1 (2023-05-16)¶

Significant Changes¶

Clarifications of the external Health Check mechanism and using `Job` classes (#31277).¶

In the past SchedulerJob and other *Job classes are known to have been used to perform external health checks for Airflow components. Those are, however, Airflow DB ORM related classes. The DB models and database structure of Airflow are considered as internal implementation detail, following public interface). Therefore, they should not be used for external health checks. Instead, you should use the airflow jobs check CLI command (introduced in Airflow 2.1) for that purpose.

Bug Fixes¶

Fix calculation of health check threshold for SchedulerJob (#31277)
Fix timestamp parse failure for k8s executor pod tailing (#31175)
Make sure that DAG processor job row has filled value in job_type column (#31182)
Fix section name reference for api_client_retry_configuration (#31174)
Ensure the KPO runs pod mutation hooks correctly (#31173)
Remove worrying log message about redaction from the OpenLineage plugin (#31149)
Move interleave_timestamp_parser config to the logging section (#31102)
Ensure that we check worker for served logs if no local or remote logs found (#31101)
Fix MappedTaskGroup import in taskinstance file (#31100)
Format DagBag.dagbag_report() Output (#31095)
Mask task attribute on task detail view (#31125)
Fix template error when iterating None value and fix params documentation (#31078)
Fix apache-hive extra so it installs the correct package (#31068)
Fix issue with zip files in DAGs folder when pre-importing Airflow modules (#31061)
Move TaskInstanceKey to a separate file to fix circular import (#31033, #31204)
Fix deleting DagRuns and TaskInstances that have a note (#30987)
Fix airflow providers get command output (#30978)
Fix Pool schema in the OpenAPI spec (#30973)
Add support for dynamic tasks with template fields that contain pandas.DataFrame (#30943)
Use the Task Group explicitly passed to ‘partial’ if any (#30933)
Fix order_by request in list DAG rest api (#30926)
Include node height/width in center-on-task logic (#30924)
Remove print from dag trigger command (#30921)
Improve task group UI in new graph (#30918)
Fix mapped states in grid view (#30916)
Fix problem with displaying graph (#30765)
Fix backfill KeyError when try_number out of sync (#30653)
Re-enable clear and setting state in the TaskInstance UI (#30415)
Prevent DagRun’s state and start_date from being reset when clearing a task in a running DagRun (#30125)

Misc/Internal¶

Upper bind dask until they solve a side effect in their test suite (#31259)
Show task instances affected by clearing in a table (#30633)
Fix missing models in API documentation (#31021)

Doc only changes¶

Improve description of the dag_processing.processes metric (#30891)
Improve Quick Start instructions (#30820)
Add section about missing task logs to the FAQ (#30717)
Mount the config directory in docker compose (#30662)
Update version_added config field for might_contain_dag and metrics_allow_list (#30969)

Airflow 2.6.0 (2023-04-30)¶

Significant Changes¶

Default permissions of file task handler log directories and files has been changed to “owner + group” writeable (#29506).¶

Default setting handles case where impersonation is needed and both users (airflow and the impersonated user) have the same group set as main group. Previously the default was also other-writeable and the user might choose to use the other-writeable setting if they wish by configuring file_task_handler_new_folder_permissions and file_task_handler_new_file_permissions in logging section.

SLA callbacks no longer add files to the dag processor manager’s queue (#30076)¶

This stops SLA callbacks from keeping the dag processor manager permanently busy. It means reduced CPU, and fixes issues where SLAs stop the system from seeing changes to existing dag files. Additional metrics added to help track queue state.

The `cleanup()` method in BaseTrigger is now defined as asynchronous (following async/await) pattern (#30152).¶

This is potentially a breaking change for any custom trigger implementations that override the cleanup() method and uses synchronous code, however using synchronous operations in cleanup was technically wrong, because the method was executed in the main loop of the Triggerer and it was introducing unnecessary delays impacting other triggers. The change is unlikely to affect any existing trigger implementations.

The gauge `scheduler.tasks.running` no longer exist (#30374)¶

The gauge has never been working and its value has always been 0. Having an accurate value for this metric is complex so it has been decided that removing this gauge makes more sense than fixing it with no certainty of the correctness of its value.

Consolidate handling of tasks stuck in queued under new `task_queued_timeout` config (#30375)¶

Logic for handling tasks stuck in the queued state has been consolidated, and the all configurations responsible for timing out stuck queued tasks have been deprecated and merged into [scheduler] task_queued_timeout. The configurations that have been deprecated are [kubernetes] worker_pods_pending_timeout, [celery] stalled_task_timeout, and [celery] task_adoption_timeout. If any of these configurations are set, the longest timeout will be respected. For example, if [celery] stalled_task_timeout is 1200, and [scheduler] task_queued_timeout is 600, Airflow will set [scheduler] task_queued_timeout to 1200.

Improvement Changes¶

Display only the running configuration in configurations view (#28892)¶

The configurations view now only displays the running configuration. Previously, the default configuration was displayed at the top but it was not obvious whether this default configuration was overridden or not. Subsequently, the non-documented endpoint /configuration?raw=true is deprecated and will be removed in Airflow 3.0. The HTTP response now returns an additional Deprecation header. The /config endpoint on the REST API is the standard way to fetch Airflow configuration programmatically.

Explicit skipped states list for ExternalTaskSensor (#29933)¶

ExternalTaskSensor now has an explicit skipped_states list

Miscellaneous Changes¶

Handle OverflowError on exponential backoff in next_run_calculation (#28172)¶

Maximum retry task delay is set to be 24h (86400s) by default. You can change it globally via core.max_task_retry_delay parameter.

Move Hive macros to the provider (#28538)¶

The Hive Macros (hive.max_partition, hive.closest_ds_partition) are available only when Hive Provider is installed. Please install Hive Provider > 5.1.0 when using those macros.

Updated app to support configuring the caching hash method for FIPS v2 (#30675)¶

Various updates for FIPS-compliance when running Airflow in Python 3.9+. This includes a new webserver option, caching_hash_method, for changing the default flask caching method.

New Features¶

AIP-50 Trigger DAG UI Extension with Flexible User Form Concept (#27063,#29376)
Skip PythonVirtualenvOperator task when it returns a provided exit code (#30690)
rename skip_exit_code to skip_on_exit_code and allow providing multiple codes (#30692)
Add skip_on_exit_code also to ExternalPythonOperator (#30738)
Add max_active_tis_per_dagrun for Dynamic Task Mapping (#29094)
Add serializer for pandas dataframe (#30390)
Deferrable TriggerDagRunOperator (#30292)
Add command to get DAG Details via CLI (#30432)
Adding ContinuousTimetable and support for @continuous schedule_interval (#29909)
Allow customized rules to check if a file has dag (#30104)
Add a new Airflow conf to specify a SSL ca cert for Kubernetes client (#30048)
Bash sensor has an explicit retry code (#30080)
Add filter task upstream/downstream to grid view (#29885)
Add testing a connection via Airflow CLI (#29892)
Support deleting the local log files when using remote logging (#29772)
Blocklist to disable specific metric tags or metric names (#29881)
Add a new graph inside of the grid view (#29413)
Add database check_migrations config (#29714)
add output format arg for cli.dags.trigger (#29224)
Make json and yaml available in templates (#28930)
Enable tagged metric names for existing Statsd metric publishing events | influxdb-statsd support (#29093)
Add arg –yes to db export-archived command. (#29485)
Make the policy functions pluggable (#28558)
Add airflow db drop-archived command (#29309)
Enable individual trigger logging (#27758)
Implement new filtering options in graph view (#29226)
Add triggers for ExternalTask (#29313)
Add command to export purged records to CSV files (#29058)
Add FileTrigger (#29265)
Emit DataDog statsd metrics with metadata tags (#28961)
Add some statsd metrics for dataset (#28907)
Add –overwrite option to connections import CLI command (#28738)
Add general-purpose “notifier” concept to DAGs (#28569)
Add a new conf to wait past_deps before skipping a task (#27710)
Add Flink on K8s Operator (#28512)
Allow Users to disable SwaggerUI via configuration (#28354)
Show mapped task groups in graph (#28392)
Log FileTaskHandler to work with KubernetesExecutor’s multi_namespace_mode (#28436)
Add a new config for adapting masked secrets to make it easier to prevent secret leakage in logs (#28239)
List specific config section and its values using the cli (#28334)
KubernetesExecutor multi_namespace_mode can use namespace list to avoid requiring cluster role (#28047)
Automatically save and allow restore of recent DAG run configs (#27805)
Added exclude_microseconds to cli (#27640)

Improvements¶

Rename most pod_id usage to pod_name in KubernetesExecutor (#29147)
Update the error message for invalid use of poke-only sensors (#30821)
Update log level in scheduler critical section edge case (#30694)
AIP-51 Removing Executor Coupling from Core Airflow (AIP-51)
Add multiple exit code handling in skip logic for BashOperator (#30739)
Updated app to support configuring the caching hash method for FIPS v2 (#30675)
Preload airflow imports before dag parsing to save time (#30495)
Improve task & run actions UX in grid view (#30373)
Speed up TaskGroups with caching property of group_id (#30284)
Use the engine provided in the session (#29804)
Type related import optimization for Executors (#30361)
Add more type hints to the code base (#30503)
Always use self.appbuilder.get_session in security managers (#30233)
Update SQLAlchemy select() to new style (#30515)
Refactor out xcom constants from models (#30180)
Add exception class name to DAG-parsing error message (#30105)
Rename statsd_allow_list and statsd_block_list to metrics_*_list (#30174)
Improve serialization of tuples and sets (#29019)
Make cleanup method in trigger an async one (#30152)
Lazy load serialization modules (#30094)
SLA callbacks no longer add files to the dag_processing manager queue (#30076)
Add task.trigger rule to grid_data (#30130)
Speed up log template sync by avoiding ORM (#30119)
Separate cli_parser.py into two modules (#29962)
Explicit skipped states list for ExternalTaskSensor (#29933)
Add task state hover highlighting to new graph (#30100)
Store grid tabs in url params (#29904)
Use custom Connexion resolver to load lazily (#29992)
Delay Kubernetes import in secret masker (#29993)
Delay ConnectionModelView init until it’s accessed (#29946)
Scheduler, make stale DAG deactivation threshold configurable instead of using dag processing timeout (#29446)
Improve grid view height calculations (#29563)
Avoid importing executor during conf validation (#29569)
Make permissions for FileTaskHandler group-writeable and configurable (#29506)
Add colors in help outputs of Airflow CLI commands #28789 (#29116)
Add a param for get_dags endpoint to list only unpaused dags (#28713)
Expose updated_at filter for dag run and task instance endpoints (#28636)
Increase length of user identifier columns (#29061)
Update gantt chart UI to display queued state of tasks (#28686)
Add index on log.dttm (#28944)
Display only the running configuration in configurations view (#28892)
Cap dropdown menu size dynamically (#28736)
Added JSON linter to connection edit / add UI for field extra. On connection edit screen, existing extra data will be displayed indented (#28583)
Use labels instead of pod name for pod log read in k8s exec (#28546)
Use time not tries for queued & running re-checks. (#28586)
CustomTTYColoredFormatter should inherit TimezoneAware formatter (#28439)
Improve past depends handling in Airflow CLI tasks.run command (#28113)
Support using a list of callbacks in on_*_callback/sla_miss_callbacks (#28469)
Better table name validation for db clean (#28246)
Use object instead of array in config.yml for config template (#28417)
Add markdown rendering for task notes. (#28245)
Show mapped task groups in grid view (#28208)
Add renamed and previous_name in config sections (#28324)
Speed up most Users/Role CLI commands (#28259)
Speed up Airflow role list command (#28244)
Refactor serialization (#28067, #30819, #30823)
Allow longer pod names for k8s executor / KPO (#27736)
Updates health check endpoint to include triggerer status (#27755)

Bug Fixes¶

Fix static_folder for cli app (#30952)
Initialize plugins for cli appbuilder (#30934)
Fix dag file processor heartbeat to run only if necessary (#30899)
Fix KubernetesExecutor sending state to scheduler (#30872)
Count mapped upstream only if all are finished (#30641)
ExternalTaskSensor: add external_task_group_id to template_fields (#30401)
Improve url detection for task instance details (#30779)
Use material icons for dag import error banner (#30771)
Fix misc grid/graph view UI bugs (#30752)
Add a collapse grid button (#30711)
Fix d3 dependencies (#30702)
Simplify logic to resolve tasks stuck in queued despite stalled_task_timeout (#30375)
When clearing task instances try to get associated DAGs from database (#29065)
Fix mapped tasks partial arguments when DAG default args are provided (#29913)
Deactivate DAGs deleted from within zip files (#30608)
Recover from too old resource version exception by retrieving the latest resource_version (#30425)
Fix possible race condition when refreshing DAGs (#30392)
Use custom validator for OpenAPI request body (#30596)
Fix TriggerDagRunOperator with deferrable parameter (#30406)
Speed up dag runs deletion (#30330)
Do not use template literals to construct html elements (#30447)
Fix deprecation warning in example_sensor_decorator DAG (#30513)
Avoid logging sensitive information in triggerer job log (#30110)
Add a new parameter for base sensor to catch the exceptions in poke method (#30293)
Fix dag run conf encoding with non-JSON serializable values (#28777)
Added fixes for Airflow to be usable on Windows Dask-Workers (#30249)
Force DAG last modified time to UTC (#30243)
Fix EmptySkipOperator in example dag (#30269)
Make the webserver startup respect update_fab_perms (#30246)
Ignore error when changing log folder permissions (#30123)
Disable ordering DagRuns by note (#30043)
Fix reading logs from finished KubernetesExecutor worker pod (#28817)
Mask out non-access bits when comparing file modes (#29886)
Remove Run task action from UI (#29706)
Fix log tailing issues with legacy log view (#29496)
Fixes to how DebugExecutor handles sensors (#28528)
Ensure that pod_mutation_hook is called before logging the pod name (#28534)
Handle OverflowError on exponential backoff in next_run_calculation (#28172)

Misc/Internal¶

Make eager upgrade additional dependencies optional (#30811)
Upgrade to pip 23.1.1 (#30808)
Remove protobuf limitation from eager upgrade (#30182)
Remove protobuf limitation from eager upgrade (#30182)
Deprecate skip_exit_code in BashOperator (#30734)
Remove gauge scheduler.tasks.running (#30374)
Bump json5 to 1.0.2 and eslint-plugin-import to 2.27.5 in /airflow/www (#30568)
Add tests to PythonOperator (#30362)
Add asgiref as a core dependency (#30527)
Discovery safe mode toggle comment clarification (#30459)
Upgrade moment-timezone package to fix Tehran tz (#30455)
Bump loader-utils from 2.0.0 to 2.0.4 in /airflow/www (#30319)
Bump babel-loader from 8.1.0 to 9.1.0 in /airflow/www (#30316)
DagBag: Use dag.fileloc instead of dag.full_filepath in exception message (#30610)
Change log level of serialization information (#30239)
Minor DagRun helper method cleanup (#30092)
Improve type hinting in stats.py (#30024)
Limit importlib-metadata backport to < 5.0.0 (#29924)
Align cncf provider file names with AIP-21 (#29905)
Upgrade FAB to 4.3.0 (#29766)
Clear ExecutorLoader cache in tests (#29849)
Lazy load Task Instance logs in UI (#29827)
added warning log for max page limit exceeding api calls (#29788)
Aggressively cache entry points in process (#29625)
Don’t use importlib.metadata to get Version for speed (#29723)
Upgrade Mypy to 1.0 (#29468)
Rename db export-cleaned to db export-archived (#29450)
listener: simplify API by replacing SQLAlchemy event-listening by direct calls (#29289)
No multi-line log entry for bash env vars (#28881)
Switch to ruff for faster static checks (#28893)
Remove horizontal lines in TI logs (#28876)
Make allowed_deserialization_classes more intuitive (#28829)
Propagate logs to stdout when in k8s executor pod (#28440, #30860)
Fix code readability, add docstrings to json_client (#28619)
AIP-51 - Misc. Compatibility Checks (#28375)
Fix is_local for LocalKubernetesExecutor (#28288)
Move Hive macros to the provider (#28538)
Rerun flaky PinotDB integration test (#28562)
Add pre-commit hook to check session default value (#28007)
Refactor get_mapped_group_summaries for web UI (#28374)
Add support for k8s 1.26 (#28320)
Replace freezegun with time-machine (#28193)
Completed D400 for airflow/kubernetes/* (#28212)
Completed D400 for multiple folders (#27969)
Drop k8s 1.21 and 1.22 support (#28168)
Remove unused task_queue attr from k8s scheduler class (#28049)
Completed D400 for multiple folders (#27767, #27768)

Doc only changes¶

Add instructions on how to avoid accidental airflow upgrade/downgrade (#30813)
Add explicit information about how to write task logs (#30732)
Better explanation on how to log from tasks (#30746)
Use correct import path for Dataset (#30617)
Create audit_logs.rst (#30405)
Adding taskflow API example for sensors (#30344)
Add clarification about timezone aware dags (#30467)
Clarity params documentation (#30345)
Fix unit for task duration metric (#30273)
Update dag-run.rst for dead links of cli commands (#30254)
Add Write efficient Python code section to Reducing DAG complexity (#30158)
Allow to specify which connection, variable or config are being looked up in the backend using *_lookup_pattern parameters (#29580)
Add Documentation for notification feature extension (#29191)
Clarify that executor interface is public but instances are not (#29200)
Add Public Interface description to Airflow documentation (#28300)
Add documentation for task group mapping (#28001)
Some fixes to metrics doc (#30290)

Airflow 2.5.3 (2023-04-01)¶

Significant Changes¶

No significant changes.

Bug Fixes¶

Fix DagProcessorJob integration for standalone dag-processor (#30278)
Fix proper termination of gunicorn when it hangs (#30188)
Fix XCom.get_one exactly one exception text (#30183)
Correct the VARCHAR size to 250. (#30178)
Revert fix for on_failure_callback when task receives a SIGTERM (#30165)
Move read only property to DagState to fix generated docs (#30149)
Ensure that dag.partial_subset doesn’t mutate task group properties (#30129)
Fix inconsistent returned value of airflow dags next-execution cli command (#30117)
Fix www/utils.dag_run_link redirection (#30098)
Fix TriggerRuleDep when the mapped tasks count is 0 (#30084)
Dag processor manager, add retry_db_transaction to _fetch_callbacks (#30079)
Fix db clean command for mysql db (#29999)
Avoid considering EmptyOperator in mini scheduler (#29979)
Fix some long known Graph View UI problems (#29971, #30355, #30360)
Fix dag docs toggle icon initial angle (#29970)
Fix tags selection in DAGs UI (#29944)
Including airflow/example_dags/sql/sample.sql in MANIFEST.in (#29883)
Fixing broken filter in /taskinstance/list view (#29850)
Allow generic param dicts (#29782)
Fix update_mask in patch variable route (#29711)
Strip markup from app_name if instance_name_has_markup = True (#28894)

Misc/Internal¶

Revert “Also limit importlib on Python 3.9 (#30069)” (#30209)
Add custom_operator_name to @task.sensor tasks (#30131)
Bump webpack from 5.73.0 to 5.76.0 in /airflow/www (#30112)
Formatted config (#30103)
Remove upper bound limit of astroid (#30033)
Remove accidentally merged vendor daemon patch code (#29895)
Fix warning in airflow tasks test command regarding absence of data_interval (#27106)

Doc only changes¶

Adding more information regarding top level code (#30040)
Update workday example (#30026)
Fix some typos in the DAGs docs (#30015)
Update set-up-database.rst (#29991)
Fix some typos on the kubernetes documentation (#29936)
Fix some punctuation and grammar (#29342)

Airflow 2.5.2 (2023-03-15)¶

Significant Changes¶

The date-time fields passed as API parameters or Params should be RFC3339-compliant (#29395)¶

In case of API calls, it was possible that “+” passed as part of the date-time fields were not URL-encoded, and such date-time fields could pass validation. Such date-time parameters should now be URL-encoded (as %2B).

In case of parameters, we still allow IS8601-compliant date-time (so for example it is possible that ‘ ‘ was used instead of T separating date from time and no timezone was specified) but we raise deprecation warning.

Default for `[webserver] expose_hostname` changed to `False` (#29547)¶

The default for [webserver] expose_hostname has been set to False, instead of True. This means administrators must opt-in to expose webserver hostnames to end users.

Bug Fixes¶

Fix validation of date-time field in API and Parameter schemas (#29395)
Fix grid logs for large logs (#29390)
Fix on_failure_callback when task receives a SIGTERM (#29743)
Update min version of python-daemon to fix containerd file limits (#29916)
POST /dagRuns API should 404 if dag not active (#29860)
DAG list sorting lost when switching page (#29756)
Fix Scheduler crash when clear a previous run of a normal task that is now a mapped task (#29645)
Convert moment with timezone to UTC instead of raising an exception (#29606)
Fix clear dag run openapi spec responses by adding additional return type (#29600)
Don’t display empty rendered attrs in Task Instance Details page (#29545)
Remove section check from get-value command (#29541)
Do not show version/node in UI traceback for unauthenticated user (#29501)
Make prev_logical_date variable offset-aware (#29454)
Fix nested fields rendering in mapped operators (#29451)
Datasets, next_run_datasets, remove unnecessary timestamp filter (#29441)
Edgemodifier refactoring w/ labels in TaskGroup edge case (#29410)
Fix Rest API update user output (#29409)
Ensure Serialized DAG is deleted (#29407)
Persist DAG and task doc values in TaskFlow API if explicitly set (#29399)
Redirect to the origin page with all the params (#29212)
Fixing Task Duration view in case of manual DAG runs only (#22015) (#29195)
Remove poke method to fall back to parent implementation (#29146)
PR: Introduced fix to run tasks on Windows systems (#29107)
Fix warning in migrations about old config. (#29092)
Emit dagrun failed duration when timeout (#29076)
Handling error on cluster policy itself (#29056)
Fix kerberos authentication for the REST API. (#29054)
Fix leak sensitive field via V1EnvVar on exception (#29016)
Sanitize url_for arguments before they are passed (#29039)
Fix dag run trigger with a note. (#29228)
Write action log to DB when DAG run is triggered via API (#28998)
Resolve all variables in pickled XCom iterator (#28982)
Allow URI without authority and host blocks in airflow connections add (#28922)
Be more selective when adopting pods with KubernetesExecutor (#28899)
KubenetesExecutor sends state even when successful (#28871)
Annotate KubernetesExecutor pods that we don’t delete (#28844)
Throttle streaming log reads (#28818)
Introduce dag processor job (#28799)
Fix #28391 manual task trigger from UI fails for k8s executor (#28394)
Logging poke info when external dag is not none and task_id and task_ids are none (#28097)
Fix inconsistencies in checking edit permissions for a DAG (#20346)

Misc/Internal¶

Add a check for not templateable fields (#29821)
Removed continue for not in (#29791)
Move extra links position in grid view (#29703)
Bump undici from 5.9.1 to 5.19.1 (#29583)
Change expose_hostname default to false (#29547)
Change permissions of config/password files created by airflow (#29495)
Use newer setuptools v67.2.0 (#29465)
Increase max height for grid view elements (#29367)
Clarify description of worker control config (#29247)
Bump ua-parser-js from 0.7.31 to 0.7.33 in /airflow/www (#29172)
Remove upper bound limitation for pytest (#29086)
Check for run_id url param when linking to graph/gantt views (#29066)
Clarify graph view dynamic task labels (#29042)
Fixing import error for dataset (#29007)
Update how PythonSensor returns values from python_callable (#28932)
Add dep context description for better log message (#28875)
Bump swagger-ui-dist from 3.52.0 to 4.1.3 in /airflow/www (#28824)
Limit importlib-metadata backport to < 5.0.0 (#29924, #30069)

Doc only changes¶

Update pipeline.rst - Fix query in merge_data() task (#29158)
Correct argument name of Workday timetable in timetable.rst (#29896)
Update ref anchor for env var link in Connection how-to doc (#29816)
Better description for limit in api (#29773)
Description of dag_processing.last_duration (#29740)
Update docs re: template_fields typing and subclasses (#29725)
Fix formatting of Dataset inlet/outlet note in TaskFlow concepts (#29678)
Specific use-case: adding packages via requirements.txt in compose (#29598)
Detect is ‘docker-compose’ existing (#29544)
Add Landing Times entry to UI docs (#29511)
Improve health checks in example docker-compose and clarify usage (#29408)
Remove notes param from TriggerDagRunOperator docstring (#29298)
Use schedule param rather than timetable in Timetables docs (#29255)
Add trigger process to Airflow Docker docs (#29203)
Update set-up-database.rst (#29104)
Several improvements to the Params doc (#29062)
Email Config docs more explicit env var examples (#28845)
Listener plugin example added (#27905)

Airflow 2.5.1 (2023-01-20)¶

Significant Changes¶

Trigger gevent `monkeypatching` via environment variable (#28283)¶

If you are using gevent for your webserver deployment and used local settings to monkeypatch gevent, you might want to replace local settings patching with an _AIRFLOW_PATCH_GEVENT environment variable set to 1 in your webserver. This ensures gevent patching is done as early as possible.

Bug Fixes¶

Fix masking of non-sensitive environment variables (#28802)
Remove swagger-ui extra from connexion and install swagger-ui-dist via npm package (#28788)
Fix UIAlert should_show when AUTH_ROLE_PUBLIC set (#28781)
Only patch single label when adopting pod (#28776)
Update CSRF token to expire with session (#28730)
Fix “airflow tasks render” cli command for mapped task instances (#28698)
Allow XComArgs for external_task_ids of ExternalTaskSensor (#28692)
Row-lock TIs to be removed during mapped task expansion (#28689)
Handle ConnectionReset exception in Executor cleanup (#28685)
Fix description of output redirection for access_log for gunicorn (#28672)
Add back join to zombie query that was dropped in #28198 (#28544)
Fix calendar view for CronTriggerTimeTable dags (#28411)
After running the DAG the employees table is empty. (#28353)
Fix DetachedInstanceError when finding zombies in Dag Parsing process (#28198)
Nest header blocks in divs to fix dagid copy nit on dag.html (#28643)
Fix UI caret direction (#28624)
Guard not-yet-expanded ti in trigger rule dep (#28592)
Move TI setNote endpoints under TaskInstance in OpenAPI (#28566)
Consider previous run in CronTriggerTimetable (#28532)
Ensure correct log dir in file task handler (#28477)
Fix bad pods pickled in executor_config (#28454)
Add ensure_ascii=False in trigger dag run API (#28451)
Add setters to MappedOperator on_*_callbacks (#28313)
Fix ti._try_number for deferred and up_for_reschedule tasks (#26993)
separate callModal from dag.js (#28410)
A manual run can’t look like a scheduled one (#28397)
Dont show task/run durations when there is no start_date (#28395)
Maintain manual scroll position in task logs (#28386)
Correctly select a mapped task’s “previous” task (#28379)
Trigger gevent monkeypatching via environment variable (#28283)
Fix db clean warnings (#28243)
Make arguments ‘offset’ and ‘length’ not required (#28234)
Make live logs reading work for “other” k8s executors (#28213)
Add custom pickling hooks to LazyXComAccess (#28191)
fix next run datasets error (#28165)
Ensure that warnings from @dag decorator are reported in dag file (#28153)
Do not warn when airflow dags tests command is used (#28138)
Ensure the dagbag_size metric decreases when files are deleted (#28135)
Improve run/task grid view actions (#28130)
Make BaseJob.most_recent_job favor “running” jobs (#28119)
Don’t emit FutureWarning when code not calling old key (#28109)
Add airflow.api.auth.backend.session to backend sessions in compose (#28094)
Resolve false warning about calling conf.get on moved item (#28075)
Return list of tasks that will be changed (#28066)
Handle bad zip files nicely when parsing DAGs. (#28011)
Prevent double loading of providers from local paths (#27988)
Fix deadlock when chaining multiple empty mapped tasks (#27964)
fix: current_state method on TaskInstance doesn’t filter by map_index (#27898)
Don’t log CLI actions if db not initialized (#27851)
Make sure we can get out of a faulty scheduler state (#27834)
dagrun, next_dagruns_to_examine, add MySQL index hint (#27821)
Handle DAG disappearing mid-flight when dag verification happens (#27720)
fix: continue checking sla (#26968)
Allow generation of connection URI to work when no conn type (#26765)

Misc/Internal¶

Remove limit for dnspython after eventlet got fixed (#29004)
Limit dnspython to < 2.3.0 until eventlet incompatibility is solved (#28962)
Add automated version replacement in example dag indexes (#28090)
Cleanup and do housekeeping with plugin examples (#28537)
Limit SQLAlchemy to below 2.0 (#28725)
Bump json5 from 1.0.1 to 1.0.2 in /airflow/www (#28715)
Fix some docs on using sensors with taskflow (#28708)
Change Architecture and OperatingSystem classes into Enums (#28627)
Add doc-strings and small improvement to email util (#28634)
Fix Connection.get_extra type (#28594)
navbar, cap dropdown size, and add scroll bar (#28561)
Emit warnings for conf.get* from the right source location (#28543)
Move MyPY plugins of ours to dev folder (#28498)
Add retry to purge_inactive_dag_warnings (#28481)
Re-enable Plyvel on ARM as it now builds cleanly (#28443)
Add SIGUSR2 handler for LocalTaskJob and workers to aid debugging (#28309)
Convert test_task_command to Pytest and unquarantine tests in it (#28247)
Make invalid characters exception more readable (#28181)
Bump decode-uri-component from 0.2.0 to 0.2.2 in /airflow/www (#28080)
Use asserts instead of exceptions for executor not started (#28019)
Simplify dataset subgraph logic (#27987)
Order TIs by map_index (#27904)
Additional info about Segmentation Fault in LocalTaskJob (#27381)

Doc only changes¶

Mention mapped operator in cluster policy doc (#28885)
Slightly improve description of Dynamic DAG generation preamble (#28650)
Restructure Docs (#27235)
Update scheduler docs about low priority tasks (#28831)
Clarify that versioned constraints are fixed at release time (#28762)
Clarify about docker compose (#28729)
Adding an example dag for dynamic task mapping (#28325)
Use docker compose v2 command (#28605)
Add AIRFLOW_PROJ_DIR to docker-compose example (#28517)
Remove outdated Optional Provider Feature outdated documentation (#28506)
Add documentation for [core] mp_start_method config (#27993)
Documentation for the LocalTaskJob return code counter (#27972)
Note which versions of Python are supported (#27798)

Airflow 2.5.0 (2022-12-02)¶

Significant Changes¶

`airflow dags test` no longer performs a backfill job (#26400)¶

In order to make airflow dags test more useful as a testing and debugging tool, we no longer run a backfill job and instead run a “local task runner”. Users can still backfill their DAGs using the airflow dags backfill command.

Airflow config section `kubernetes` renamed to `kubernetes_executor` (#26873)¶

KubernetesPodOperator no longer considers any core kubernetes config params, so this section now only applies to kubernetes executor. Renaming it reduces potential for confusion.

`AirflowException` is now thrown as soon as any dependent tasks of ExternalTaskSensor fails (#27190)¶

ExternalTaskSensor no longer hangs indefinitely when failed_states is set, an execute_date_fn is used, and some but not all of the dependent tasks fail. Instead, an AirflowException is thrown as soon as any of the dependent tasks fail. Any code handling this failure in addition to timeouts should move to caching the AirflowException BaseClass and not only the AirflowSensorTimeout subclass.

The Airflow config option `scheduler.deactivate_stale_dags_interval` has been renamed to `scheduler.parsing_cleanup_interval` (#27828).¶

The old option will continue to work but will issue deprecation warnings, and will be removed entirely in Airflow 3.

New Features¶

TaskRunner: notify of component start and finish (#27855)
Add DagRun state change to the Listener plugin system(#27113)
Metric for raw task return codes (#27155)
Add logic for XComArg to pull specific map indexes (#27771)
Clear TaskGroup (#26658, #28003)
Add critical section query duration metric (#27700)
Add: #23880 :: Audit log for AirflowModelViews(Variables/Connection) (#24079, #27994, #27923)
Add postgres 15 support (#27444)
Expand tasks in mapped group at run time (#27491)
reset commits, clean submodules (#27560)
scheduler_job, add metric for scheduler loop timer (#27605)
Allow datasets to be used in taskflow (#27540)
Add expanded_ti_count to ti context (#27680)
Add user comment to task instance and dag run (#26457, #27849, #27867)
Enable copying DagRun JSON to clipboard (#27639)
Implement extra controls for SLAs (#27557)
add dag parsed time in DAG view (#27573)
Add max_wait for exponential_backoff in BaseSensor (#27597)
Expand tasks in mapped group at parse time (#27158)
Add disable retry flag on backfill (#23829)
Adding sensor decorator (#22562)
Api endpoint update ti (#26165)
Filtering datasets by recent update events (#26942)
Support Is /not Null filter for value is None on webui (#26584)
Add search to datasets list (#26893)
Split out and handle ‘params’ in mapped operator (#26100)
Add authoring API for TaskGroup mapping (#26844)
Add one_done trigger rule (#26146)
Create a more efficient airflow dag test command that also has better local logging (#26400)
Support add/remove permissions to roles commands (#26338)
Auto tail file logs in Web UI (#26169)
Add triggerer info to task instance in API (#26249)
Flag to deserialize value on custom XCom backend (#26343)

Improvements¶

Allow depth-first execution (#27827)
UI: Update offset height if data changes (#27865)
Improve TriggerRuleDep typing and readability (#27810)
Make views requiring session, keyword only args (#27790)
Optimize TI.xcom_pull() with explicit task_ids and map_indexes (#27699)
Allow hyphens in pod id used by k8s executor (#27737)
optimise task instances filtering (#27102)
Use context managers to simplify log serve management (#27756)
Fix formatting leftovers (#27750)
Improve task deadlock messaging (#27734)
Improve “sensor timeout” messaging (#27733)
Replace urlparse with urlsplit (#27389)
Align TaskGroup semantics to AbstractOperator (#27723)
Add new files to parsing queue on every loop of dag processing (#27060)
Make Kubernetes Executor & Scheduler resilient to error during PMH execution (#27611)
Separate dataset deps into individual graphs (#27356)
Use log.exception where more economical than log.error (#27517)
Move validation branch_task_ids into SkipMixin (#27434)
Coerce LazyXComAccess to list when pushed to XCom (#27251)
Update cluster-policies.rst docs (#27362)
Add warning if connection type already registered within the provider (#27520)
Activate debug logging in commands with –verbose option (#27447)
Add classic examples for Python Operators (#27403)
change .first() to .scalar() (#27323)
Improve reset_dag_run description (#26755)
Add examples and howtos about sensors (#27333)
Make grid view widths adjustable (#27273)
Sorting plugins custom menu links by category before name (#27152)
Simplify DagRun.verify_integrity (#26894)
Add mapped task group info to serialization (#27027)
Correct the JSON style used for Run config in Grid View (#27119)
No extra__conn_type__ prefix required for UI behaviors (#26995)
Improve dataset update blurb (#26878)
Rename kubernetes config section to kubernetes_executor (#26873)
decode params for dataset searches (#26941)
Get rid of the DAGRun details page & rely completely on Grid (#26837)
Fix scheduler crashloopbackoff when using hostname_callable (#24999)
Reduce log verbosity in KubernetesExecutor. (#26582)
Don’t iterate tis list twice for no reason (#26740)
Clearer code for PodGenerator.deserialize_model_file (#26641)
Don’t import kubernetes unless you have a V1Pod (#26496)
Add updated_at column to DagRun and Ti tables (#26252)
Move the deserialization of custom XCom Backend to 2.4.0 (#26392)
Avoid calculating all elements when one item is needed (#26377)
Add __future__.annotations automatically by isort (#26383)
Handle list when serializing expand_kwargs (#26369)
Apply PEP-563 (Postponed Evaluation of Annotations) to core airflow (#26290)
Add more weekday operator and sensor examples #26071 (#26098)
Align TaskGroup semantics to AbstractOperator (#27723)

Bug Fixes¶

Gracefully handle whole config sections being renamed (#28008)
Add allow list for imports during deserialization (#27887)
Soft delete datasets that are no longer referenced in DAG schedules or task outlets (#27828)
Redirect to home view when there are no valid tags in the URL (#25715)
Refresh next run datasets info in dags view (#27839)
Make MappedTaskGroup depend on its expand inputs (#27876)
Make DagRun state updates for paused DAGs faster (#27725)
Don’t explicitly set include_examples to False on task run command (#27813)
Fix menu border color (#27789)
Fix backfill queued task getting reset to scheduled state. (#23720)
Fix clearing child dag mapped tasks from parent dag (#27501)
Handle json encoding of V1Pod in task callback (#27609)
Fix ExternalTaskSensor can’t check zipped dag (#27056)
Avoid re-fetching DAG run in TriggerDagRunOperator (#27635)
Continue on exception when retrieving metadata (#27665)
External task sensor fail fix (#27190)
Add the default None when pop actions (#27537)
Display parameter values from serialized dag in trigger dag view. (#27482, #27944)
Move TriggerDagRun conf check to execute (#27035)
Resolve trigger assignment race condition (#27072)
Update google_analytics.html (#27226)
Fix some bug in web ui dags list page (auto-refresh & jump search null state) (#27141)
Fixed broken URL for docker-compose.yaml (#26721)
Fix xcom arg.py .zip bug (#26636)
Fix 404 taskInstance errors and split into two tables (#26575)
Fix browser warning of improper thread usage (#26551)
template rendering issue fix (#26390)
Clear autoregistered DAGs if there are any import errors (#26398)
Fix from airflow import version lazy import (#26239)
allow scroll in triggered dag runs modal (#27965)

Misc/Internal¶

Remove is_mapped attribute (#27881)
Simplify FAB table resetting (#27869)
Fix old-style typing in Base Sensor (#27871)
Switch (back) to late imports (#27730)
Completed D400 for multiple folders (#27748)
simplify notes accordion test (#27757)
completed D400 for airflow/callbacks/* airflow/cli/* (#27721)
Completed D400 for airflow/api_connexion/* directory (#27718)
Completed D400 for airflow/listener/* directory (#27731)
Completed D400 for airflow/lineage/* directory (#27732)
Update API & Python Client versions (#27642)
Completed D400 & D401 for airflow/api/* directory (#27716)
Completed D400 for multiple folders (#27722)
Bump minimatch from 3.0.4 to 3.0.8 in /airflow/www (#27688)
Bump loader-utils from 1.4.1 to 1.4.2 ``in ``/airflow/www (#27697)
Disable nested task mapping for now (#27681)
bump alembic minimum version (#27629)
remove unused code.html (#27585)
Enable python string normalization everywhere (#27588)
Upgrade dependencies in order to avoid backtracking (#27531)
Strengthen a bit and clarify importance of triaging issues (#27262)
Deduplicate type hints (#27508)
Add stub ‘yield’ to BaseTrigger.run (#27416)
Remove upper-bound limit to dask (#27415)
Limit Dask to under 2022.10.1 (#27383)
Update old style typing (#26872)
Enable string normalization for docs (#27269)
Slightly faster up/downgrade tests (#26939)
Deprecate use of core get_kube_client in PodManager (#26848)
Add memray files to gitignore / dockerignore (#27001)
Bump sphinx and sphinx-autoapi (#26743)
Simplify RTIF.delete_old_records() (#26667)
migrate last react files to typescript (#26112)
Work around pyupgrade edge cases (#26384)

Doc only changes¶

Document dag_file_processor_timeouts metric as deprecated (#27067)
Drop support for PostgreSQL 10 (#27594)
Update index.rst (#27529)
Add note about pushing the lazy XCom proxy to XCom (#27250)
Fix BaseOperator link (#27441)
[docs] best-practices add use variable with template example. (#27316)
docs for custom view using plugin (#27244)
Update graph view and grid view on overview page (#26909)
Documentation fixes (#26819)
make consistency on markup title string level (#26696)
Add documentation to dag test function (#26713)
Fix broken URL for docker-compose.yaml (#26726)
Add a note against use of top level code in timetable (#26649)
Fix example_datasets dag names (#26495)
Update docs: zip-like effect is now possible in task mapping (#26435)
changing to task decorator in docs from classic operator use (#25711)

Release Notes¶

Significant Changes¶

Bug Fixes¶

Miscellaneous¶

Doc Only Changes¶

Highlights¶

Significant Changes¶

Task Execution API & Task SDK (AIP-72)¶

Edge Executor (AIP-69)¶

Scheduler-Managed Backfills (AIP-78)¶

DAG Versioning (AIP-66)¶

React UI Rewrite (AIP-38, AIP-84)¶

Asset-Based Scheduling & Terminology Alignment (AIP-74, AIP-75)¶

Unified Scheduling Field¶

Updated Scheduling Defaults¶

Restricted Metadata Database Access¶

Future Logical Dates No Longer Supported¶

Context Behavior for Asset and Manually Triggered DAGs¶

Improved Callback Behavior¶

Updated Default Configuration¶

Executor & Scheduler Updates¶

Standalone DAG Processor Required¶

Priority Weight Capped by Pool Slots¶

Teardown Task Handling During DAG Termination¶

Improved Scheduler Fault Tolerance¶

Mapped Task Stats Accuracy¶

SequentialExecutor has been removed¶

DAG Authoring Enhancements¶

New Stable DAG Authoring Interface: airflow.sdk¶

Renamed Parameter: fail_stop → fail_fast¶

Context Cleanup and Parameter Removal¶

Task Context Utilities Moved¶

Trigger Rule Restrictions¶

Asset Aliases for Reusability¶

Operator Links interface changed¶

Plugins no longer support adding executors, operators & hooks¶

Support for ML & AI Use Cases (AIP-83)¶

Config & Interface Changes¶

Default Value Handling¶

Refactored Config Defaults¶

Refactored Internal Utilities¶

Improved inlet_events, outlet_events, and triggering_asset_events¶

Behaviour change in xcom_pull¶

Removed Configuration Keys¶

Upgrade Tooling¶

CLI & API Changes¶

Split CLI Architecture (AIP-81)¶

REST API v2 replaces v1¶

REST API: DAG Trigger Behavior Updated¶

Removed CLI Flags and Commands¶

Provider Refactor & Standardization¶

UI & Usability Improvements¶

New Home Page¶

Unified DAG List View¶

Version-Aware Graph and Grid Views¶

Expanded DAG Graph Visualization¶

DAG Code View¶

Improved Task Log Access¶

Enhanced Asset and Backfill Views¶

Deprecations & Removals¶

Summary of Removed Features¶

Migration Tooling & Upgrade Process¶

Minimum Supported Versions¶

DAG Compatibility Checks¶

Configuration Migration¶

Metadata Database Upgrade¶

Startup Behavior Changes¶

Resources¶

Significant Changes¶

DeltaTriggerTimetable for trigger-based scheduling (#47074)¶

Consistent timing metrics across all backends (#39908, #43966)¶

Ease migration to Airflow 3¶

Python 3.8 support removed¶

New Features¶

Bug Fixes¶

Miscellaneous¶

Doc Only Changes¶

Significant Changes¶

Ensure teardown tasks are executed when DAG run is set to failed (#45530)¶

Bug Fixes¶

`SequentialExecutor` has been removed¶

New Stable DAG Authoring Interface: `airflow.sdk`¶

Renamed Parameter: `fail_stop` → `fail_fast`¶

Improved `inlet_events`, `outlet_events`, and `triggering_asset_events`¶

Behaviour change in `xcom_pull`¶

`DeltaTriggerTimetable` for trigger-based scheduling (#47074)¶

TaskInstance `priority_weight` is capped in 32-bit signed integer ranges (#43611)¶

`try_number` is no longer incremented during task execution (#39336)¶

`/logout` endpoint in FAB Auth Manager is now CSRF protected (#40145)¶

Decorator for Task Flow `(@skip_if, @run_if)` to make it simple to apply whether or not to skip a Task. (#41116)¶

Time unit for `scheduled_duration` and `queued_duration` changed (#37936)¶

Stackdriver logging bugfix requires Google provider `10.17.0` or later (#38071)¶

The method `get_permitted_menu_items` in `BaseAuthManager` has been renamed `filter_permitted_menu_items` (#37627)¶