seelmann edited a comment on issue #5908: Revert "[AIRFLOW-4797] Improve performance and behaviour of zombie de… URL: https://github.com/apache/airflow/pull/5908#issuecomment-528710963 Just reverting it would reintroduce the zombie detection problem (see Jira and discussion in the inital PR https://github.com/apache/airflow/pull/5420). I'm ok with reverting it if it increases DB load in case you have 1000s of DAGS (we only have 20+). But then we need to find another way to fix the zombie detection. Why is zombie detection at all part of DAG file processing? Can't there be a separate background thread that checks e.g. once per minute (configurable) for zombie tasks?
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