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Posted to issues@ozone.apache.org by "mingchao zhao (Jira)" <ji...@apache.org> on 2022/12/21 08:07:00 UTC

[jira] [Updated] (HDDS-5478) Improve error logging in OMStateMachine

     [ https://issues.apache.org/jira/browse/HDDS-5478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

mingchao zhao updated HDDS-5478:
--------------------------------
    Target Version/s: 1.4.0  (was: 1.3.0)

> Improve error logging in OMStateMachine
> ---------------------------------------
>
>                 Key: HDDS-5478
>                 URL: https://issues.apache.org/jira/browse/HDDS-5478
>             Project: Apache Ozone
>          Issue Type: Improvement
>          Components: OM
>            Reporter: Hanisha Koneru
>            Assignee: Hanisha Koneru
>            Priority: Major
>
> If some exception occurs in a StateMachine implemented method, the exception is propagated back to Ratis and then through Ratis back again to StateMachine. In this back and forth, the exception could be lost. 
> While working on OM Bootstrap, I encountered a NullPointer exception in OMStateMachine which cause Ratis (and eventually StateMachine) to shutdown with a "client cancelled" exception. It would have helped in debugging if the OMStateMachine had logged the initial exception. 



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