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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Commented] (AIRFLOW-5796) Error in SubdagOperator when resetting DB
Date Mon, 28 Oct 2019 08:56:00 GMT

    [ https://issues.apache.org/jira/browse/AIRFLOW-5796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16960868#comment-16960868
] 

ASF GitHub Bot commented on AIRFLOW-5796:
-----------------------------------------

potiuk commented on pull request #6451: [AIRFLOW-5796] Fix case when slot_pool relation is
missing
URL: https://github.com/apache/airflow/pull/6451
 
 
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> Error in SubdagOperator when resetting DB
> -----------------------------------------
>
>                 Key: AIRFLOW-5796
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-5796
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: operators
>    Affects Versions: 2.0.0, 1.10.6
>            Reporter: Jarek Potiuk
>            Priority: Major
>
> There is an error when resetting DB. The migration here:
> *cc1e65623dc7_add_max_tries_column_to_task_instance.py*.
> Which reads DagBag and when reading the DagBag "cannot import tests/dags/test_clear_subdag.py"
with the root cause:
> *psycopg2.ProgrammingError: relation "slot_pool" does not exist*
>  *LINE 2: FROM slot_pool*
> The problem is that SubDagOperator relies on slot_pool relation being present but it's
not yet ready (because it is added in one of the later migrations).
> It does not cause big problems (the error is caught and ignored and migration continue),
however it's not really nice to see such error.
>  



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