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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2136) RMStateStore can explicitly handle store/update events when fenced
Date Tue, 05 Aug 2014 20:04:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14086668#comment-14086668
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Karthik Kambatla commented on YARN-2136:
----------------------------------------

bq. On a second check, state-store is actually already stopped/closed when RM gets fenced,
which means no more store operation can be performed once RM gets fenced. Karthik Kambatla,
is this the case?
Yes. That is correct. 

I was open to adding the FENCED state to future-proof against us not stopping the store when
RM transitions to Standby, but I agree we could probably look into this when we get there.


> 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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