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https://issues.apache.org/jira/browse/YARN-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025729#comment-14025729
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Karthik Kambatla commented on YARN-2136:
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Adding a FENCED state makes sense to me. Once a state-store is fenced, we 
shouldn't allow any operations on it.

> RMStateStore can explicitly handle store/update events when fenced
> ------------------------------------------------------------------
>
>                 Key: YARN-2136
>                 URL: https://issues.apache.org/jira/browse/YARN-2136
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>
> RMStateStore can choose to handle/ignore store/update events upfront instead 
> of invoking more ZK operations if state store is at fenced state. 



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