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Posted to commits@airflow.apache.org by "Michael Kotliar (JIRA)" <ji...@apache.org> on 2017/03/13 22:01:41 UTC

[jira] [Created] (AIRFLOW-977) Deadlocked DAG run with MySQL v5.7.17

Michael Kotliar created AIRFLOW-977:
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             Summary: Deadlocked DAG run with MySQL v5.7.17
                 Key: AIRFLOW-977
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-977
             Project: Apache Airflow
          Issue Type: Bug
          Components: DagRun
    Affects Versions: Airflow 1.7.1
         Environment: macOS Sierra 10.12.3, MySQL 5.7.17, Airflow 1.7.1.3
            Reporter: Michael Kotliar


When using MySQL 5.7.17 all DATETIME values are saved in DB using rounding, not truncating, like it was before in MySQL 5.5. This causes failing in is_queueable check for task, when its execution date was previously saved in DB rounded towards bigger value. It makes execution date to be bigger than datetime.now(). If all of the tasks from DAG have failed this check, the DAG becomes deadlocked.



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