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Posted to commits@airflow.apache.org by "Pratik Khadloya (JIRA)" <ji...@apache.org> on 2017/09/19 20:16:00 UTC

[jira] [Commented] (AIRFLOW-1077) Subdags can deadlock

    [ https://issues.apache.org/jira/browse/AIRFLOW-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172279#comment-16172279 ] 

Pratik Khadloya commented on AIRFLOW-1077:
------------------------------------------

I think i am running into the same issue. Airflow says the subdags are running, but none of the steps within it are executing. When i restarted airflow, some progress happened, but then it got blocked again.

> Subdags can deadlock
> --------------------
>
>                 Key: AIRFLOW-1077
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1077
>             Project: Apache Airflow
>          Issue Type: Bug
>            Reporter: Alex Guziel
>
> Given a concurrency of n, if all n running tasks are Subdags, the subdags block any of their tasks from executing, leading to deadlock



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