uranusjr commented on code in PR #32883:
URL: https://github.com/apache/airflow/pull/32883#discussion_r1299813724
##########
airflow/operators/subdag.py:
##########
@@ -112,7 +113,7 @@ def _validate_pool(self, session):
conflicts = [t for t in self.subdag.tasks if t.pool == self.pool]
if conflicts:
# only query for pool conflicts if one may exist
- pool = session.query(Pool).filter(Pool.slots ==
1).filter(Pool.pool == self.pool).first()
+ pool = session.scalar(select(Pool).where(Pool.slots == 1,
Pool.pool == self.pool))
Review Comment:
`Pool.pool` is also unique
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