uranusjr commented on a change in pull request #18975:
URL: https://github.com/apache/airflow/pull/18975#discussion_r728906466
##########
File path: airflow/jobs/scheduler_job.py
##########
@@ -510,7 +510,15 @@ def _process_executor_events(self, session: Session =
None) -> int:
# Check state of finished tasks
filter_for_tis = TI.filter_for_tis(tis_with_right_state)
- tis: List[TI] =
session.query(TI).filter(filter_for_tis).options(selectinload('dag_model')).all()
+ query =
session.query(TI).filter(filter_for_tis).options(selectinload('dag_model'))
+ # row lock this entire set of tasks to make sure the scheduler doesn't
fail when we have
+ # multi-schedulers
+ tis: List[TI] = with_row_locks(
+ query,
+ of=TI,
+ session=session,
+ **skip_locked(session=session),
+ ).all()
Review comment:
```suggestion
tis: Iterator[TI] = with_row_locks(
query,
of=TI,
session=session,
**skip_locked(session=session),
)
```
Probably a good time to change this
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