Apache Airflow 2.8.1

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.

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:

• PEP-440 Version Identification and Dependency Specification <https://www.python.org/dev/peps/pep-0440/>__
• PEP-517 A build-system independent format for source trees <https://www.python.org/dev/peps/pep-0517/>__
• PEP-518 Specifying Minimum Build System Requirements for Python Projects <https://www.python.org/dev/peps/pep-0518/>__
• PEP-561 Distributing and Packaging Type Information <https://www.python.org/dev/peps/pep-0561/>__
• PEP-621 Storing project metadata in pyproject.toml <https://www.python.org/dev/peps/pep-0621/>__
• PEP-660 Editable installs for pyproject.toml based builds (wheel based) <https://www.python.org/dev/peps/pep-0660/>__
• PEP-685 Comparison of extra names for optional distribution dependencies <https://www.python.org/dev/peps/pep-0685/>__

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 <https://peps.python.org/pep-0639/>__

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 doc-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)

Apache Airflow 2.8.0

Significant Changes

• Raw HTML code in DAG docs and DAG params descriptions is disabled by default

  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. (#35460)

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 s...

Apache Airflow 2.7.3

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)

Apache Airflow 2.7.2

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)

Apache Airflow Helm Chart 1.11.0

Significant Changes

Support naming customization on helm chart resources, some resources may be renamed during upgrade (#31066)

This is a new opt-in switch useStandardNaming, for backwards compatibility, to leverage the standard naming convention, which allows full use of fullnameOverride and nameOverride in all resources.

The following resources will be renamed using default of useStandardNaming=false when upgrading to 1.11.0 or a higher version.

• ConfigMap {release}-airflow-config to {release}-config
• Secret {release}-airflow-metadata to {release}-metadata
• Secret {release}-airflow-result-backend to {release}-result-backend
• Ingress {release}-airflow-ingress to {release}-ingress

For existing installations, all your resources will be recreated with a new name and Helm will delete the previous resources.

This won't delete existing PVCs for logs used by StatefulSet/Deployments, but it will recreate them with brand new PVCs.
If you do want to preserve logs history you'll need to manually copy the data of these volumes into the new volumes after
deployment. Depending on what storage backend/class you're using this procedure may vary. If you don't mind starting
with fresh logs/redis volumes, you can just delete the old PVCs that will be names, for example:

kubectl delete pvc -n airflow logs-gta-triggerer-0
kubectl delete pvc -n airflow logs-gta-worker-0
kubectl delete pvc -n airflow redis-db-gta-redis-0

If you do not change useStandardNaming or fullnameOverride after upgrade, you can proceed as usual and no unexpected behaviours will be presented.

bitnami/postgresql subchart updated to 12.10.0 (#33747)

The PostgreSQL subchart that is used with the Chart is now 12.10.0, previously it was 12.1.9.

Default git-sync image is updated to 3.6.9 (#33748)

The default git-sync image that is used with the Chart is now 3.6.9, previously it was 3.6.3.

Default Airflow image is updated to 2.7.1 (#34186)

The default Airflow image that is used with the Chart is now 2.7.1, previously it was 2.6.2.

New Features

• Add support for scheduler name to PODs templates (#33843)
• Support KEDA scaling for triggerer (#32302)
• Add support for container lifecycle hooks (#32349, #34677)
• Support naming customization on helm chart resources (#31066)
• Adding startupProbe to scheduler and webserver (#33107)
• Allow disabling token mounts using automountServiceAccountToken (#32808)
• Add support for defining custom priority classes (#31615)
• Add support for runtimeClassName (#31868)
• Add support for custom query in workers KEDA trigger (#32308)

Improvements

• Add containerSecurityContext for cleanup job (#34351)
• Add existing secret support for PGBouncer metrics exporter (#32724)
• Allow templating in webserver ingress hostnames (#33142)
• Allow templating in flower ingress hostnames (#33363)
• Add configmap annotations to StatsD and webserver (#33340)
• Add pod security context to PgBouncer (#32662)
• Add an option to use a direct DB connection in KEDA when PgBouncer is enabled (#32608)
• Allow templating in cleanup.schedule (#32570)
• Template dag processor waitformigration containers extraVolumeMounts (#32100)
• Ability to inject extra containers into PgBouncer (#33686)
• Allowing ability to add custom env into PgBouncer container (#33438)
• Add support for env variables in the StatsD container (#33175)

Bug Fixes

• Add airflow db migrate command to database migration job (#34178)
• Pass workers.terminationGracePeriodSeconds into KubeExecutor pod template (#33514)
• CeleryExecutor namespace depends on Airflow version (#32753)
• Fix dag processor not including webserver config volume (#32644)
• Dag processor liveness probe include --local and --job-type args (#32426)
• Revising flower_url_prefix considering default value (#33134)

Doc only changes

• Add more explicit "embedded postgres" exclusion for production (#33034)
• Update git-sync description (#32181)

Misc

• Default Airflow version to 2.7.1 (#34186)
• Update PostgreSQL subchart to 12.10.0 (#33747)
• Update git-sync to 3.6.9 (#33748)
• Remove unnecessary loops to load env from helm values (#33506)
• Replace common.tplvalues.render with tpl in ingress template files (#33384)
• Remove K8S 1.23 support (#32899)
• Fix chart named template comments (#32681)
• Remove outdated comment from chart values in the workers KEDA conf section (#32300)
• Remove unnecessary or function in template files (#34415)

Apache Airflow 2.7.1

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)

Apache Airflow 2.7.0

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 <https://airflow.apache.org/docs/apache-airflow/stable/core-concepts/params.html#use-params-to-provide-a-trigger-ui-form>_
• 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 ...

Apache Airflow 2.6.3

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)

Apache Airflow Helm Chart 1.10.0

Significant Changes

Default Airflow image is updated to 2.6.2 (#31979)

The default Airflow image that is used with the Chart is now 2.6.2, previously it was 2.5.3.

New Features

• Add support for container security context (#31043)

Improvements

• Validate executor and config.core.executor match (#30693)
• Support minAvailable property for PodDisruptionBudget (#30603)
• Add volumeMounts to dag processor waitForMigrations (#30990)
• Template extra volumes (#30773)

Bug Fixes

• Fix webserver probes timeout and period (#30609)
• Add missing waitForMigrations for workers (#31625)
• Add missing priorityClassName to K8S worker pod template (#31328)
• Adding log groomer sidecar to dag processor (#30726)
• Do not propagate global security context to statsd and redis (#31865)

Misc

• Default Airflow version to 2.6.2 (#31979)
• Use template comments for the chart license header (#30569)
• Align apiVersion and kind order in chart templates (#31850)
• Cleanup Kubernetes < 1.23 support (#31847)

Apache Airflow 2.6.2

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)