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https://issues.apache.org/jira/browse/YARN-2962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16044455#comment-16044455
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Varun Saxena commented on YARN-2962:
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Thanks [~bibinchundatt]. You are correct. I forgot to discuss regarding not
changing the major state store version.
To be honest we can raise a separate JIRA for this as well as it has been a
fair while since this JIRA went in.
If everyone agrees we can just change the minor version. Otherwise, this will
be an incompatible change. Barring state store version, this should be a
compatible fix though.
The only issue is that node structure has changed quite a bit(although old
nodes still have the same structure). Is it mandatory to change the major state
store version if the node structure has changed this much?
cc [~templedf], [~kasha], let me know your thoughts on this.
> 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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