potiuk commented on issue #6451: [AIRFLOW-5796] Fix case when slot_pool relation is missing URL: https://github.com/apache/airflow/pull/6451#issuecomment-546857283 I guess this is a different error then ? BTW. I realised now - Isn't that really a bad practice to access the DB in the init() of the operator (or in the DAG). That makes extra DB connection/query to be created/used during parsing of the DAG and it's rather disturbing (so maybe we should actually correct the SubDagOperator to not make the pool query in the init() ? There were some discussions recently about a number of DB connections opened needlessly and that might be one of the culprits actually.
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