XD-DENG commented on issue #4504: [AIRFLOW-3690] Fix api.common.experimental.mark_tasks.set_state for manually-triggered DAG Runs URL: https://github.com/apache/airflow/pull/4504#issuecomment-453831934 Hi @kaxil , supplementary information: when you try to repeat my Step-3, you may see the line below in your webserver log: ``` /Users/XD/anaconda3/envs/airflow_env/lib/python3.5/site-packages/sqlalchemy/sql/default_comparator.py:161: SAWarning: The IN-predicate on "task_instance.execution_date" was invoked with an empty sequence. This results in a contradiction, which nonetheless can be expensive to evaluate. Consider alternative strategies for improved performance. 'strategies for improved performance.' % expr) ``` This was also one of the clues I used to trouble-shoot this.
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