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From "Bibin A Chundatt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2962) ZKRMStateStore: Limit the number of znodes under a znode
Date Fri, 09 Jun 2017 13:36:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-2962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16044443#comment-16044443
] 

Bibin A Chundatt commented on YARN-2962:
----------------------------------------

[~varun_saxena]/[~templedf]

Had the time to check the change . Currently as per the following code since the VERSION is
marked as 2 .
{code}
161	  protected static final Version CURRENT_VERSION_INFO = Version
162	      .newInstance(2, 0);
{code}
{{RMStateStore#checkVersion}} will fail and RM will not be able to start with old state store.


> 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: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Varun Saxena
>            Priority: Critical
>             Fix For: 2.9.0, 3.0.0-alpha4
>
>         Attachments: YARN-2962.006.patch, YARN-2962.007.patch, YARN-2962.008.patch, YARN-2962.008.patch,
YARN-2962.009.patch, YARN-2962.010.patch, YARN-2962.011.patch, YARN-2962.01.patch, YARN-2962.04.patch,
YARN-2962.05.patch, YARN-2962.2.patch, YARN-2962.3.patch
>
>
> 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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