ashb commented on code in PR #22917: URL: https://github.com/apache/airflow/pull/22917#discussion_r847739746
########## airflow/models/serialized_dag.py: ########## @@ -220,6 +220,36 @@ def remove_dag(cls, dag_id: str, session: Session = None): """ session.execute(cls.__table__.delete().where(cls.dag_id == dag_id)) + @classmethod + @provide_session + def remove_unknown_dags_in_dag_file( + cls, active_dag_ids: List[str], dag_file_path: str, session=None + ) -> List[str]: + """ + Deletes serialized_dags whose dag_ids are not in the active_dag_ids for a given dag_file_path + + :return: a list of inactive dag ids + :rtype: list[str] + """ + file_path_hash = DagCode.dag_fileloc_hash(dag_file_path) + # there is a db index on fileloc_hash + rows = session.query(cls.dag_id).filter(cls.fileloc_hash == file_path_hash).all() + dag_ids_from_db = [i[0] for i in rows] + + dag_ids_to_remove = [dag_id for dag_id in dag_ids_from_db if dag_id not in active_dag_ids] + + if dag_ids_to_remove: + # delete one by one to avoid locking the table Review Comment: Does this apply to all DBs or just Mysql? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@airflow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org