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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2432) RMStateStore should process the pending events before close
Date Sat, 15 Nov 2014 15:28:36 GMT

    [ https://issues.apache.org/jira/browse/YARN-2432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14213661#comment-14213661
] 

Hudson commented on YARN-2432:
------------------------------

SUCCESS: Integrated in Hadoop-Mapreduce-trunk-Java8 #6 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/6/])
YARN-2432. RMStateStore should process the pending events before close. Contributed by Varun
Saxena (jianhe: rev 9b860661a5754e829bd8c34ef092757421589bbe)
* hadoop-yarn-project/CHANGES.txt
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java


> 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
>             Fix For: 2.7.0
>
>         Attachments: YARN-2432.patch
>
>
> 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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