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https://issues.apache.org/jira/browse/AIRFLOW-949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924840#comment-15924840
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Bolke de Bruin commented on AIRFLOW-949:
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[~saguziel] [~aoen]
> kill_process_tree does not kill the root process
> ------------------------------------------------
>
> Key: AIRFLOW-949
> URL: https://issues.apache.org/jira/browse/AIRFLOW-949
> Project: Apache Airflow
> Issue Type: Bug
> Components: utils
> Affects Versions: 1.8.0rc4
> Reporter: Erik Cederstrand
> Labels: patch
> Attachments: helpers.patch
>
>
> The kill_process_tree() function in airflow/utils/helper.py does not attempt
> to kill the root process. Since there's also a kill_descendant_processes()
> function, I assume that was the intent.
> Also, according to the comments, the intent is to send first SIGTERM, and
> then SIGKILL, to decendant processes. But in fact, SIGTERM is sent twice.
> The attached patch fixes both problems.
> This was found while investigating why the airflow worker would not kill
> certain jobs that had crashed.
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