[jira] [Commented] (AIRFLOW-1011) Task Instance Results not stored for SubDAG Tasks

["Ruslan Dautkhanov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AIRFLOW-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15932116#comment-15932116 ] 

Ruslan Dautkhanov commented on AIRFLOW-1011:
--------------------------------------------

AIRFLOW-1014 might be related or caused by the same root cause.


> Task Instance Results not stored for SubDAG Tasks
> -------------------------------------------------
>
>                 Key: AIRFLOW-1011
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1011
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: backfill, subdag
>    Affects Versions: Airflow 1.8
>            Reporter: Joe Schmid
>            Priority: Critical
>         Attachments: 1-TopLevelDAGTaskInstancesShownCorrectly.png, 2-ZoomedSubDAG-NoTaskInstances-v1.8.png, 3-ZoomedSubDAG-TaskInstances-v1.7.1.3.png, test_subdag.py
>
>
> In previous Airflow versions, results for tasks executed as a subdag were written as rows to task_instances. In Airflow 1.8 only rows for tasks inside the top-level DAG (non-subdag tasks) seem to get written to the database.
> This results in being unable to check the status of task instances inside the subdag from the UI, check the logs for those task instances from the UI, etc.
> Attached is a simple test DAG that exhibits the issue along with screenshots showing the UI differences between v1.8 and v1.7.1.3.
> Note that if the DAG is run via backfill from command line (e.g. "airflow backfill Test_SubDAG -s 2017-03-18 -e 2017-03-18") the task instances show up successfully.
> Also, we're using CeleryExecutor and not specifying a different executor for our subdags.



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