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https://issues.apache.org/jira/browse/YARN-9644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16873005#comment-16873005
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Sunil Govindan commented on YARN-9644:
--------------------------------------
+1 on this patch.
Fix seems fine for both cases which is mentioned here. Committing shortly if
there are no objections, Thanks [~rohithsharma] for offline review.
> First RMContext always leaked during switch over
> ------------------------------------------------
>
> Key: YARN-9644
> URL: https://issues.apache.org/jira/browse/YARN-9644
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bibin A Chundatt
> Assignee: Bibin A Chundatt
> Priority: Critical
> Attachments: YARN-9644.001.patch, YARN-9644.002.patch,
> YARN-9644.003.patch
>
>
> As per my understanding following 2 issues causes the issue.
> * WebApp holds the reference to First applicationMasterServer instance, which
> has rmcontext with ActiveServiceContext (holds RMApps + nodes map). WebApp
> remains to life time of RM process.
> * On transistion to active RMNMInfo object is registered in MBean and never
> unregistered on transitionToStandBy
> On transistion to Standby and again based to active new RMContext gets
> created, but above 2 issues causes first RMcontext persist still RMShutdown.
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