Airflow 3.4.0

Issues

• Release Management for Java-SDK

  area:java-sdkpriority:low
  apache/airflow#66333 · Filter by author jason810496 opened on May 4, 2026 · Airflow 3.4.0
  1

  

• Cross-SDK DagSerialization compatibility CI for the Go SDK

  area:CIarea:dev-toolsgo-sdkkind:featurekind:taskpriority:low
  apache/airflow#66942 · Filter by author jason810496 opened on May 14, 2026 · Airflow 3.4.0
  

• Improve Task Dependency Representation

  area:java-sdkkind:featurekind:taskon holdpriority:low
  apache/airflow#66331 · Filter by author jason810496 opened on May 4, 2026 · Airflow 3.4.0
  1

  

• Java-based task and dag level callbacks

  area:java-sdkkind:featurepriority:low
  Feature

  apache/airflow#66543 · Filter by author uranusjr opened on May 7, 2026 · Airflow 3.4.0
  1

  

• Java-SDK OpenLineage support (lineage callback from Java task to Python supervisor)

  area:coordinatorarea:corearea:java-sdkkind:featurepriority:low
  apache/airflow#67111 · Filter by author jason810496 opened on May 18, 2026 · Airflow 3.4.0
  1

• Decouple Cadwyn (FastAPI/Starlette) hard dependencies from the Airflow Task SDK installation

  area:coordinatorarea:dependenciesarea:java-sdkkind:featurepriority:low
  apache/airflow#66837 · Filter by author jason810496 opened on May 13, 2026 · Airflow 3.4.0
  1

  

• AIP-108: Re-enable Dag Processor coordinator schema-version pinning

  AIP-85: Dag Importerarea:coordinatorarea:coreon hold
  apache/airflow#66934 · Filter by author jason810496 opened on May 14, 2026 · Airflow 3.4.0
  

• How to avoid dependency conflict between user application Dag and JavaSDK itself

  area:dependenciesarea:java-sdkkind:documentationon holdpriority:low
  apache/airflow#66329 · Filter by author jason810496 opened on May 4, 2026 · Airflow 3.4.0

• Dag and task-level callbacks in the Go SDK

  area:corego-sdkkind:featurepriority:low
  apache/airflow#66944 · Filter by author jason810496 opened on May 14, 2026 · Airflow 3.4.0
  

• Restoring include_downstream_dags logic to clear downstream Dags

  area:APIarea:dag-processorready for maintainer reviewtype:improvement
  Unread
  apache/airflow#65314·jroachgolf84 opened Apr 15, 2026 · Updated Oct 10, 2026
  83

• Deliver the per-run log ID template to workers via TIRunContext

  area:APIarea:loggingarea:providersarea:task-sdkprovider:elasticsearchprovider:opensearch
  Unread
  apache/airflow#69688·jason810496 opened Jul 10, 2026 · Updated Oct 11, 2026
  3

  

• Fetch several XCom values of a Taskinstance in one Execution API request

  area:APIarea:dag-processorarea:task-sdkskip newsfragment check
  Unread
  apache/airflow#70223·dabla opened Jul 22, 2026 · Updated Oct 14, 2026·Draft
  12

  

• Add Execution API endpoints for callback lifecycle and token swap

  area:APIarea:schedulerarea:task-sdkready for maintainer review
  Unread
  apache/airflow#66141·wjddn279 opened Apr 30, 2026 · Updated Oct 17, 2026
  53

  

• Skip log accumulator disk spill when reading finished task logs

  area:APIarea:logging
  Unread
  apache/airflow#70671·jason810496 opened Jul 29, 2026 · Updated Oct 12, 2026
  4

  

• Make JWTRefreshMiddleware extensible via BaseAuthManager.get_jwt_refresh_middleware()

  area:APIarea:providersprovider:fab
  Unread
  apache/airflow#70783·stephen-bracken opened Jul 30, 2026 · Updated Oct 15, 2026
  33

• Let providers contribute tables to 'db clean'

  area:CLIarea:providersprovider:celery
  Unread
  apache/airflow#70639·uranusjr opened Jul 28, 2026 · Updated Aug 24, 2026
  4

• Make the scheduler Dag cache size and TTL configurable

  area:ConfigTemplatesarea:dev-toolsarea:schedulerkind:documentation
  Unread
  apache/airflow#71816·jason810496 opened Aug 19, 2026 · Updated Oct 13, 2026
  3

  

• Drain result_queue before dispatch to prevent runtime deadlock in LocalExecutor

  area:Executors-corebackport-to-v3-4-testready for maintainer reviewtype:bug-fix
  Unread
  apache/airflow#70545·SakshamKapoor2911 opened Jul 27, 2026 · Updated Oct 15, 2026
  9

• UI: Add cross-Dag Time Schedule view

  area:translationsarea:UIkind:documentationtranslation:default
  Unread
  apache/airflow#71558·minyeamer opened Aug 13, 2026 · Updated Oct 13, 2026
  79

• fix/issue-66373: Adding back queued_dttm to TIRunContext model

  area:APIarea:task-sdk
  Unread
  apache/airflow#67713·jroachgolf84 opened May 29, 2026 · Updated Aug 24, 2026
  8

• Stop forked children re-exporting the parent's OTel metrics

  Unread
  apache/airflow#71855·dstandish opened Aug 19, 2026 · Updated Oct 16, 2026
  1

• Improve error handling for SUPERVISOR_COMMS access outside task context

  area:task-sdk
  Unread
  apache/airflow#61630·andreahlert opened Feb 8, 2026 · Updated Sep 9, 2026
  23

• Use bounded DBDagBag cache in scheduler

  area:ConfigTemplatesarea:scheduler
  Unread
  apache/airflow#69007·Mady356 opened Jun 26, 2026 · Updated Sep 9, 2026·Draft
  16

  

• Fix dagrun starvation

  area:schedulertype:bug-fix
  Unread
  apache/airflow#64109·Nataneljpwd opened Mar 23, 2026 · Updated Oct 12, 2026
  76

  

• Add team_name to DagRunProtocol to match the DagRun Pydantic model.

  area:task-sdkready for maintainer review
  Unread
  apache/airflow#68403·dkranchii opened Jun 11, 2026 · Updated Oct 12, 2026
  24