41390.significant.rst

Support for SubDags is removed

Subdags have been removed from the following locations:

• CLI
• API
• SubDagOperator

This removal marks the end of Subdag support across all interfaces. Users should transition to using TaskGroups as a more efficient and maintainable alternative. Please ensure your DAGs are updated to remove any usage of Subdags to maintain compatibility with future Airflow releases.

• Types of change
  • [x] Dag changes
  • [ ] Config changes
  • [x] API changes
  • [x] CLI changes
  • [ ] Behaviour changes
  • [ ] Plugin changes
  • [ ] Dependency changes
  • [ ] Code interface changes
• Migration rules needed
  • ruff
    • AIR302
      • [x] airflow.operators.subdag.*