uranusjr commented on a change in pull request #19553:
URL: https://github.com/apache/airflow/pull/19553#discussion_r748241982
##########
File path: airflow/dag_processing/processor.py
##########
@@ -389,6 +389,12 @@ def manage_slas(self, dag: DAG, session: Session = None)
-> None:
.group_by(TI.task_id)
.subquery('sq')
)
+ # get recorded SlaMiss
+ recorded_slas = (
+ session.query(SlaMiss.dag_id, SlaMiss.task_id,
SlaMiss.execution_date)
+ .filter(SlaMiss.dag_id == dag.dag_id,
SlaMiss.task_id.in_(dag.task_ids))
+ .all()
+ )
Review comment:
```suggestion
recorded_slas_query = set(
session.query(SlaMiss.dag_id, SlaMiss.task_id,
SlaMiss.execution_date)
.filter(SlaMiss.dag_id == dag.dag_id,
SlaMiss.task_id.in_(dag.task_ids))
)
```
Make lookup faster.
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