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Posted to yarn-issues@hadoop.apache.org by "Varun Saxena (JIRA)" <ji...@apache.org> on 2015/02/27 07:41:05 UTC

[jira] [Commented] (YARN-2962) ZKRMStateStore: Limit the number of znodes under a znode

    [ https://issues.apache.org/jira/browse/YARN-2962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14339796#comment-14339796 ] 

Varun Saxena commented on YARN-2962:
------------------------------------

[~kasha] / [~kasha@cloudera.com], for this I WILL assume that state store will be formatted before making the config change ?
Backward compatibility for running apps after config change (on RM restart) will be difficult. As we may have to try all the possible appid formats.


> ZKRMStateStore: Limit the number of znodes under a znode
> --------------------------------------------------------
>
>                 Key: YARN-2962
>                 URL: https://issues.apache.org/jira/browse/YARN-2962
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Varun Saxena
>            Priority: Critical
>
> We ran into this issue where we were hitting the default ZK server message size configs, primarily because the message had too many znodes even though they individually they were all small.



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