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https://issues.apache.org/jira/browse/YARN-2432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Varun Saxena updated YARN-2432:
-------------------------------

    Summary: RMStateStore should process the pending events before close  (was: 
RMStateStore should process the pending events before clo)

> RMStateStore should process the pending events before close
> -----------------------------------------------------------
>
>                 Key: YARN-2432
>                 URL: https://issues.apache.org/jira/browse/YARN-2432
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Varun Saxena
>            Assignee: Varun Saxena
>
> Refer to discussion on YARN-2136 
> (https://issues.apache.org/jira/browse/YARN-2136?focusedCommentId=14097266&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14097266).
>  
> As pointed out by [~jianhe], we should process the dispatcher event queue 
> before closing the state store by flipping over the following statements in 
> code.
> {code:title=RMStateStore.java|borderStyle=solid}
>  protected void serviceStop() throws Exception {
>     closeInternal();
>     dispatcher.stop();
>   }
> {code}
> Currently, if the state store is being stopped on events such as switching to 
> standby, it will first close the state store(in case of ZKRMStateStore, close 
> connection with ZK) and then process the pending events. Instead, we should 
> first process the pending events and then call close.



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