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https://issues.apache.org/jira/browse/MAPREDUCE-6311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482936#comment-14482936
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Rohith commented on MAPREDUCE-6311:
-----------------------------------

Attached the patch for stopping ScheduledThreadPoolExecutor using 
{{SignerSecretProvider#destroy}} API. Tested the patch in cluster, it is 
working fine.

Kindly review the patch

> AM JVM hungs after job unregister and finished
> ----------------------------------------------
>
>                 Key: MAPREDUCE-6311
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6311
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Rohith
>            Assignee: Rohith
>         Attachments: 0001-MAPREDUCE-6311.patch, MR_TD.out
>
>
> It is observed that MRAppMaster JVM hungs after unregistered with 
> ResourceManager.



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