[jira] [Closed] (AIRFLOW-962) Dag runs are deadlocked for DAG scheduled for @once

["Bolke de Bruin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bolke de Bruin closed AIRFLOW-962.
----------------------------------
       Resolution: Fixed
         Assignee: Bolke de Bruin
    Fix Version/s: 1.8.0

> Dag runs are deadlocked for DAG scheduled for @once
> ---------------------------------------------------
>
>                 Key: AIRFLOW-962
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-962
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: DagRun
>         Environment: airflow v1.7.1.3 installed AWS cluster node
> with celery executor ,rabbitMQ service and mysql for meta store
>            Reporter: Sheikh Aslam Ahmed
>            Assignee: Bolke de Bruin
>             Fix For: 1.8.0
>
>
> We read mysql table row from python script and create dags out of it, any change in the row leads to change in the dag.
> we schedule dag based on inputs(like @once,hourly, daily etc).
> From last few days hourly and other scheduled profiles run properly but profile with schedule @once got failed (on web UI no task got picked up from the DAG). the error in the logs shows message as ' {jobs.py:538} ERROR - Dag runs are deadlocked for DAG: dagname'
> after that if we trigger a manual run for same DAG from web UI it run and complete successfully.  



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