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https://issues.apache.org/jira/browse/ZOOKEEPER-2695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mohammad Arshad updated ZOOKEEPER-2695:
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Attachment: ZOOKEEPER-2695-01.patch
Submitting the fix, throwing {{SystemErrorException}} for all errors which are
not known to client
> Handle unknown error for rolling upgrade old client new server scenario
> -----------------------------------------------------------------------
>
> Key: ZOOKEEPER-2695
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2695
> Project: ZooKeeper
> Issue Type: Bug
> Components: java client
> Reporter: Mohammad Arshad
> Assignee: Mohammad Arshad
> Attachments: ZOOKEEPER-2695-01.patch
>
>
> In Zookeeper rolling upgrade scenario where server is new but client is old,
> when sever sends error code which is not understood by the client, client
> throws NullPointerException.
> KeeperException.SystemErrorException should be thrown for all unknown error
> code.
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