uranusjr commented on code in PR #30911:
URL: https://github.com/apache/airflow/pull/30911#discussion_r1253955878
##########
airflow/models/dag.py:
##########
@@ -2925,27 +2925,30 @@ def bulk_write_to_db(
session.add(orm_dag)
orm_dags.append(orm_dag)
- # Get the latest dag run for each existing dag as a single query
(avoid n+1 query)
- most_recent_subq = (
- select(DagRun.dag_id,
func.max(DagRun.execution_date).label("max_execution_date"))
- .where(
- DagRun.dag_id.in_(existing_dags),
- or_(DagRun.run_type == DagRunType.BACKFILL_JOB,
DagRun.run_type == DagRunType.SCHEDULED),
+ most_recent_runs: dict[str, DagRun] = {}
+ num_active_runs: dict[str, int] = {}
+ # Save runtime if dag is not scheduleable
Review Comment:
```suggestion
# Skip these queries entirely if no DAGs can be scheduled to save
time.
```
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