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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (AIRFLOW-1491) Celery executor restarts result in duplicate tasks
Date Sun, 02 Sep 2018 18:05:03 GMT

     [ https://issues.apache.org/jira/browse/AIRFLOW-1491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned AIRFLOW-1491:
-------------------------------------

    Assignee: Holden Karau's magical unicorn  (was: George Leslie-Waksman)

> Celery executor restarts result in duplicate tasks
> --------------------------------------------------
>
>                 Key: AIRFLOW-1491
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1491
>             Project: Apache Airflow
>          Issue Type: Bug
>            Reporter: George Leslie-Waksman
>            Assignee: Holden Karau's magical unicorn
>            Priority: Major
>
> Since the Celery executor uses internal state to determine what it has queued already,
anything that wipes the executor state (such as a scheduler restart) will result in rescheduling
of tasks.
> This bug exacerbates a number of task scheduling race conditions and can result in duplicate
task execution.



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