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https://issues.apache.org/jira/browse/STORM-3686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17525047#comment-17525047
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Bipin Prasad commented on STORM-3686:
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[~sauravsuman689], The logs are not complete - but it appears that the leader
nimbus cannot be determined. Please restart nimbus.
[~ijihang] please attach your logs - may be the same issue, but could be a
different one.
> o.a.s.t.s.AbstractNonblockingServer$FrameBuffer pool-14-thread-10 [ERROR]
> Unexpected throwable while invoking! java.lang.NullPointerException: null
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: STORM-3686
> URL: https://issues.apache.org/jira/browse/STORM-3686
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 1.2.2
> Environment: PROD
> Reporter: Saurav Suman
> Priority: Blocker
> Attachments: Storm_ui.log, storm_nimbus.log
>
>
> Hi Team,
>
> Very often I am getting below error in storm nimbus and after that the storm
> UI loads only with some content.
>
> 2020-08-05 02:45:01.802 o.a.s.t.s.AbstractNonblockingServer$FrameBuffer
> pool-14-thread-10 [ERROR] Unexpected throwable while invoking!
> java.lang.NullPointerException: null
>
> Attached the storm nimbus and ui error from their logs.
>
> Please advise.
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