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https://issues.apache.org/jira/browse/YARN-2268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14505322#comment-14505322
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Xuan Gong commented on YARN-2268:
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bq. If an active RM creates a "I am using the state-store" lock-file, then the
command can bail out. Similarly, the command can create a "I am blowing up the
state-store while you were presumably away", so that RM can crash
deterministically when a format is in progress.
+1 for the proposal. This is probably the simplest way to fix the issue.
> 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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