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https://issues.apache.org/jira/browse/YARN-9644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16878001#comment-16878001
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Bibin A Chundatt commented on YARN-9644:
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Thank you [~sunilg] for review and committing .. Attached patch for 3.2
> First RMContext object is 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-branch-3.2.001.patch, 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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