milton0825 commented on issue #4949: [AIRFLOW-1557] Backfill should respect pool limit URL: https://github.com/apache/airflow/pull/4949#issuecomment-475512659 @feng-tao even if we are using the same executor as scheduler, I still think we should not use the same task instance pool. It is possible that the user launch a huge backfill that occupies the pool and causes normal tasks to starve. In general, I think we should have better isolation between normal tasks and backfill tasks.
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