Arunodoy18 opened a new pull request, #59126:
URL: https://github.com/apache/airflow/pull/59126
Add savepoint-based transaction management in SchedulerJobRunner to prevent
transaction corruption when database errors occur during dag run creation.
Previously, catching exceptions with 'except Exception' and continuing would
not rollback the transaction when the exception was caused by a database error
(e.g., IntegrityError, OperationalError). This left the session in an invalid
state and prevented subsequent dag runs from being created.
Changes:
- Wrap each dag run creation attempt in _create_dag_runs with a savepoint
- Wrap each asset-triggered dag run creation in
_create_dag_runs_asset_triggered with a savepoint
- Roll back the savepoint on any exception to isolate failures
- Add test to verify database errors are handled without corrupting the
session
This ensures that if one dag fails to create a run due to a database error,
other dags in the same batch can still create their runs successfully.
Fixes: apache/airflow#59121
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