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https://issues.apache.org/jira/browse/YARN-2268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14499638#comment-14499638
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Rohith commented on YARN-2268:
------------------------------

Attached the patch for disallowing format store using previous approach. Kindly 
review the patch

> Disallow formatting the RMStateStore when there is an RM running
> ----------------------------------------------------------------
>
>                 Key: YARN-2268
>                 URL: https://issues.apache.org/jira/browse/YARN-2268
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Rohith
>         Attachments: 0001-YARN-2268.patch
>
>
> YARN-2131 adds a way to format the RMStateStore. However, it can be a problem 
> if we format the store while an RM is actively using it. It would be nice to 
> fail the format if there is an RM running and using this store. 



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