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https://issues.apache.org/jira/browse/YARN-8411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510323#comment-16510323
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Billie Rinaldi commented on YARN-8411:
--------------------------------------
Thanks for the review, [~eyang]! The new patch attempts to distinguish an
exception due to the service already existing, and in that case logs an
informative message. If it receives a different type of exception, it will log
it with the "Got exception" message and will not go on to try to start the
service.
> Enable stopped system services to be started during RM start
> ------------------------------------------------------------
>
> Key: YARN-8411
> URL: https://issues.apache.org/jira/browse/YARN-8411
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Billie Rinaldi
> Assignee: Billie Rinaldi
> Priority: Critical
> Attachments: YARN-8411.01.patch, YARN-8411.02.patch
>
>
> With YARN-8048, the RM can launch system services using the YARN service
> framework. If the service app is in a stopped state, user intervention is
> required to delete the service so that the RM can launch it again when the RM
> is restarted. It would be an improvement for the RM to be able to start a
> stopped system service.
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