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https://issues.apache.org/jira/browse/YARN-2268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14506574#comment-14506574
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Sunil G commented on YARN-2268:
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HI [~rohithsharma]
I feel we can keep the file in statestore itself. And take file lock from
there, then as you mentioned we may get exposed to race conditions such as RM
is killed etc and lock file remains. Due to which *format* cannot be performed
at all.
Could we have a *-soft* and *-hard* format options here. *-soft* can acquire
lock file to perform option. *-hard* format can go in and format w/o caring the
lock. Pls share your thoughts.
> 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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