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Bipin Prasad commented on STORM-3686: ------------------------------------- [~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. -- This message was sent by Atlassian Jira (v8.20.7#820007)