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https://issues.apache.org/jira/browse/AIRFLOW-4597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16884570#comment-16884570
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jack commented on AIRFLOW-4597:
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[~ash] and isn't that exactly what
[https://github.com/apache/airflow/pull/4291] is trying to do?
> Add DagStateSensor
> ------------------
>
> Key: AIRFLOW-4597
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4597
> Project: Apache Airflow
> Issue Type: Wish
> Components: contrib
> Affects Versions: 1.10.3
> Reporter: HaloKu
> Priority: Major
>
> Airflow offers variety of sensor to poke DAGs.
> Most of them are time based or execution_date base.
> I have use case where all I care about is the DAG state.
> DAG has 3 states: Completed, Running, Failed (The sensor is on DAG level. not
> on task level.)
> For example:
> DAG A, DAG B
> B can run only if A is not in "Running" state.
> I don't care which execution_date A has. Simply B start only if A doesn't
> have active run.
>
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