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https://issues.apache.org/jira/browse/AIRFLOW-5523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16936011#comment-16936011
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Ash Berlin-Taylor commented on AIRFLOW-5523:
--------------------------------------------
Yes to tidying errors, but probably extend the "should delete DAGs that no
longer exist" to filter out dags that have ever been run.
> DAGs never get cleaned up from webservers if DAG file is removed from the
> scheduler
> -----------------------------------------------------------------------------------
>
> Key: AIRFLOW-5523
> URL: https://issues.apache.org/jira/browse/AIRFLOW-5523
> Project: Apache Airflow
> Issue Type: Bug
> Components: webserver
> Affects Versions: 1.10.5
> Reporter: Dan Davydov
> Priority: Major
> Attachments: Screen Shot 2019-09-19 at 4.39.24 PM.png
>
>
> DAGs are never removed from the DB if the DAG file used to generate the DAGs
> is removed. This causes the webserver to accumulate broken dag rows (see
> attached screenshot).
> The scheduler should delete all DAGs from the DAG table with files that no
> longer exist when it scans the DAGs folder for files.
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