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https://issues.apache.org/jira/browse/AIRFLOW-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15630490#comment-15630490
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Paul Yang commented on AIRFLOW-605:
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I think the logic that sets tasks to those states if there is no DAG run could
be removed and replaced with another mechanism. I'll see if I can get to it
later this week.
> TI's without dagrun never set to failed or none.
> ------------------------------------------------
>
> Key: AIRFLOW-605
> URL: https://issues.apache.org/jira/browse/AIRFLOW-605
> Project: Apache Airflow
> Issue Type: Bug
> Components: scheduler
> Reporter: Gerard Toonstra
> Priority: Minor
>
> The code that sets the task instance state to FAILED or NONE if there's no
> dagrun associated with them always evaluates to True.
> dag_is_running = True
> for dag_run in dag_runs:
> if dag_run.state == State.RUNNING:
> dag_is_running = True
> break
> This code can be found in the jobs.py file.
> This probably never surfaced because usually they would have associated
> dagruns, but I believe it can have an impact for manual runs and perhaps
> backfills.
> I found this when browsing the source code, not because it was observed when
> running airflow.
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