Airflow 3.4.0

Issues

• Clear retry policy state when a TI is cleared

  backport-to-v3-4-test
  Unread
  apache/airflow#73889·amoghrajesh opened Sep 29, 2026 · Updated Oct 23, 2026
  15

  

• Reject supervisor responses that belong to a different request

  area:task-sdkbackport-to-v3-4-testtype:bug-fix
  Unread
  apache/airflow#74010·hkc-8010 opened Oct 1, 2026 · Updated Oct 18, 2026

• Keep reschedule-mode sensors from failing on a stale executor success

  area:schedulerbackport-to-v3-4-testtype:bug-fix
  Unread
  apache/airflow#74212·canyang25 opened Oct 5, 2026 · Updated Oct 18, 2026
  2

• Stop a stale callback stat from forcing constant Dag file reparsing

  area:dag-processorbackport-to-v3-4-test
  Unread
  apache/airflow#73433·vuonghoangbntt opened Sep 21, 2026 · Updated Oct 22, 2026
  11

• Bound the heartbeat-timeout purge to max_tis_per_query per loop

  area:schedulerbackport-to-v3-4-test
  Unread
  apache/airflow#75010·vatsrahul1001 opened Oct 18, 2026 · Updated Oct 24, 2026
  8

• Fix LocalExecutor deadlock when a workload put blocks

  area:Executors-corebackport-to-v3-4-test
  Unread
  apache/airflow#75086·potiuk opened Oct 19, 2026 · Updated Oct 22, 2026
  3

• Speed up pool list responses

  area:APIbackport-to-v3-4-testtype:misc/internal
  Unread
  apache/airflow#75216·safaehar opened Oct 20, 2026 · Updated Oct 21, 2026
  1

• Commit pre-release constraints onto the shared constraints-X-Y branch

  area:dev-toolsbackport-to-v3-4-test
  Unread
  apache/airflow#75329·potiuk opened Oct 21, 2026 · Updated Oct 24, 2026
  8

• Accept a single string for Dag tags and allowed_run_types

  area:task-sdkbackport-to-v3-4-testtype:bug-fix
  Unread
  apache/airflow#75379·mattwang44 opened Oct 22, 2026 · Updated Oct 22, 2026

• Use EXISTS instead of a fan-out join in asset orphanage

  area:schedulerbackport-to-v3-4-test
  Unread
  apache/airflow#75404·Abdel39 opened Oct 22, 2026 · Updated Oct 23, 2026
  13

• UI: Fix visual and console-error bugs in Dag list and details

  area:UIbackport-to-v3-4-test
  Unread
  apache/airflow#75418·bbovenzi opened Oct 22, 2026 · Updated Oct 23, 2026
  12

• Add dag.schedule_overdue_seconds metric for Dags held back by max_active_runs

  area:schedulerbackport-to-v3-4-testready for maintainer review
  Unread
  apache/airflow#74854·Abdel39 opened Oct 16, 2026 · Updated Oct 23, 2026
  4

• Deprecate airflow.utils.email in favor of the SMTP provider

  area:dev-toolsbackport-to-v3-4-testtype:misc/internal
  Unread
  apache/airflow#75414·shivaam opened Oct 22, 2026 · Updated Oct 24, 2026
  6