[jira] [Commented] (AIRFLOW-5500) Bug in trigger api endpoint

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AIRFLOW-5500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17120885#comment-17120885 ] 

ASF GitHub Bot commented on AIRFLOW-5500:
-----------------------------------------

potiuk commented on pull request #8081:
URL: https://github.com/apache/airflow/pull/8081#issuecomment-636732337


   I think that one neds some better understanding about consequences of subdag triggering - it looks legit for me (and I marked it for 1.10.11) but maybe others @kaxil? @milton0825 can have a look and see if there is no problem with it. It's rather small change.


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> Bug in trigger api endpoint 
> ----------------------------
>
>                 Key: AIRFLOW-5500
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-5500
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: api
>    Affects Versions: 1.10.1
>            Reporter: Deavarajegowda M T
>            Priority: Critical
>         Attachments: 3level.py
>
>
> Unable to trigger workflow with nested sub dags, getting following error:
>  sqlalchemy.exc.IntegrityError: (psycopg2.IntegrityError) duplicate key value (dag_id,execution_date)=('dummy.task1.task_level1.task_level2','2019-09-10 13:00:27+00:00') violates unique constraint "dag_run_dag_id_execution_date_key"
>  trigger_dag for nested sub_dags is called twice.
>  
> fix:
> in airflow/api/common/experimental/trigger_dag.py -
> while populating subdags for a dag, each subdag's subdags is also populated to main dag.
> So no need to repopulate subdags for each subdag separately.



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