Dirk Gorissen created AIRFLOW-769:
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Summary: Schedule requirement for subdags
Key: AIRFLOW-769
URL: https://issues.apache.org/jira/browse/AIRFLOW-769
Project: Apache Airflow
Issue Type: Bug
Components: subdag
Affects Versions: Airflow 1.7.1.3
Reporter: Dirk Gorissen
I suspect this to be a known problem but I failed to find an issue about this.
Its confusing enough I thought to raise it just in case.
The docs say:
>SubDAGs must have a schedule and be enabled. If the SubDAG’s schedule
>is set to None or @once, the SubDAG will succeed without having done
>anything
And further googling reveals this is because subdags are implemented as a
backfill job.
As a user I find this very confusing. I see subdags as just a convenient
logical grouping. Why should they need their own schedule, never mind it not
being allowed certain values. Im assuming you can just put whatever value and
that it just gets ignored. For it wouldnt make logical sense to have your
subdag run at a different schedule then the encompassing dag. But I admit to
not having explicitly tested that yet.
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