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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2241) ZKRMStateStore: On startup, show nicer messages if znodes already exist
Date Thu, 03 Jul 2014 15:18:31 GMT

    [ https://issues.apache.org/jira/browse/YARN-2241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14051572#comment-14051572
] 

Hudson commented on YARN-2241:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1820 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1820/])
YARN-2241. ZKRMStateStore: On startup, show nicer messages if znodes already exist. (Robert
Kanter via kasha) (kasha: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1607473)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java


> ZKRMStateStore: On startup, show nicer messages if znodes already exist
> -----------------------------------------------------------------------
>
>                 Key: YARN-2241
>                 URL: https://issues.apache.org/jira/browse/YARN-2241
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.0
>            Reporter: Robert Kanter
>            Assignee: Robert Kanter
>            Priority: Minor
>             Fix For: 2.5.0
>
>         Attachments: YARN-2241.patch, YARN-2241.patch
>
>
> When using the RMZKStateStore, if you restart the RM, you get a bunch of stack traces
with messages like {{org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode
= NodeExists for /rmstore}}.  This is expected as these nodes already exist from before. 
We should catch these and print nicer messages.



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