jgao54 commented on issue #4388: [AIRFLOW-XXX] Correct BranchPythonOperator instructions in docs URL: https://github.com/apache/incubator-airflow/pull/4388#issuecomment-450452098 Good catch. The default `TriggerRule.ALL_SUCCESS` would result in task getting skipped if **any** direct upstream is skipped. Given BranchPythonOperator should not typically be used with ALL_SUCCESS (it would imply to _always_ skip downstream tasks), would you mind addressing this in the doc instead of just staying the default behavior?
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