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From "Bibin A Chundatt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6531) Check appStateData size before saving to Zookeeper
Date Wed, 26 Apr 2017 14:06:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-6531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15984867#comment-15984867
] 

Bibin A Chundatt commented on YARN-6531:
----------------------------------------

[~naganarasimha_gr@apache.org]

Since the limit is in zookeeper side my point is check should be part of ZkStateStore. Similar
to zk retry times limit validation we can have in ZkStateStore once the event is processed.
Since StateStore dispatchers are different i think the cost for having the check after sending
also should be fine. Application can be rejected from {{NEW_SAVING}} state directly. 


> Check appStateData size before saving to Zookeeper
> --------------------------------------------------
>
>                 Key: YARN-6531
>                 URL: https://issues.apache.org/jira/browse/YARN-6531
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Bibin A Chundatt
>            Assignee: Bibin A Chundatt
>            Priority: Critical
>
> Application with large size Application submission context could cause store to Zookeeper
failure due to znode size limit. Zookeeper znode limit exception thrown {{org.apache.zookeeper.KeeperException$ConnectionLossException}}.
ZkStateStore will retry for configured times and will throw ConnectionLossException after
configured limit.
> Which could cause Resource manager to switch from active To StandBy and other application
submitted not getting save to ZK.
> Solution {{ApplicationStateData}} size to be validated before saving and reject application
so that ResourceManager is not impacted.



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