ashb commented on code in PR #55589:
URL: https://github.com/apache/airflow/pull/55589#discussion_r2348761288
##########
airflow-core/src/airflow/models/serialized_dag.py:
##########
@@ -460,7 +460,9 @@ def write_dag(
@classmethod
def latest_item_select_object(cls, dag_id):
- return select(cls).where(cls.dag_id ==
dag_id).order_by(cls.created_at.desc()).limit(1)
+ # prevent "Out of sort memory" caused by large values in cls.data
column
+ latest_item_id = select(cls.id).where(cls.dag_id ==
dag_id).order_by(cls.created_at.desc()).limit(1)
+ return select(cls).where(cls.id == latest_item_id)
Review Comment:
This should probably be specialized for MySQL, but to use the normal/current
query for Postgres and SQLIte
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