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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8411) Enable stopped system services to be started during RM start
Date Wed, 13 Jun 2018 04:15:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510593#comment-16510593
] 

Rohith Sharma K S commented on YARN-8411:
-----------------------------------------

thanks [~billie.rinaldi] for the patch. It looks good to me as well. 
I have one generic doubt on start operations, does service start identifies if service is
already running? Because in system services services are long running and in case of RM restart
or HA switch, by default we are going to start services. 

> 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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