hussein-awala commented on code in PR #31676:
URL: https://github.com/apache/airflow/pull/31676#discussion_r1214008734
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airflow/models/dagrun.py:
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@@ -552,6 +552,9 @@ def is_effective_leaf(task):
return not task.is_teardown or task.on_failure_fail_dagrun
leaf_task_ids = {x.task_id for x in dag.tasks if is_effective_leaf(x)}
+ if not leaf_task_ids:
+ # can happen if dag is exclusively teardown tasks
+ leaf_task_ids = {x.task_id for x in dag.tasks if not
x.downstream_list}
Review Comment:
Why do we need a non-empty list of leaves? Does it affect the DAG run state
or serve a different purpose?
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