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https://issues.apache.org/jira/browse/RATIS-645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Tsz Wo Nicholas Sze updated RATIS-645:
--------------------------------------
    Description: 
RaftStateMachineExceptionTests.testRetryOnExceptionDuringReplication has failed 
in Jenkins with NullPointerException; for example 
https://builds.apache.org/job/PreCommit-RATIS-Build/915/testReport/org.apache.ratis.server.simulation/TestRaftStateMachineExceptionWithSimulatedRpc/testRetryOnExceptionDuringReplication/

Just able to reproduce it:
{code}
java.lang.NullPointerException
        at 
org.apache.ratis.server.impl.RaftStateMachineExceptionTests.testRetryOnExceptionDuringReplication(RaftStateMachineExceptionTests.java:172)
{code}


  was:
RaftStateMachineExceptionTests.testRetryOnExceptionDuringReplication has failed 
in Jenkins with NullPointerException; for example 
https://builds.apache.org/job/PreCommit-RATIS-Build/915/testReport/org.apache.ratis.server.simulation/TestRaftStateMachineExceptionWithSimulatedRpc/testRetryOnExceptionDuringReplication/

Unfortunately, the stack trace is missing and I cannot reproduce it locally.



> testRetryOnExceptionDuringReplication may throw NPE.
> ----------------------------------------------------
>
>                 Key: RATIS-645
>                 URL: https://issues.apache.org/jira/browse/RATIS-645
>             Project: Ratis
>          Issue Type: Bug
>            Reporter: Tsz Wo Nicholas Sze
>            Priority: Major
>
> RaftStateMachineExceptionTests.testRetryOnExceptionDuringReplication has 
> failed in Jenkins with NullPointerException; for example 
> https://builds.apache.org/job/PreCommit-RATIS-Build/915/testReport/org.apache.ratis.server.simulation/TestRaftStateMachineExceptionWithSimulatedRpc/testRetryOnExceptionDuringReplication/
> Just able to reproduce it:
> {code}
> java.lang.NullPointerException
>       at 
> org.apache.ratis.server.impl.RaftStateMachineExceptionTests.testRetryOnExceptionDuringReplication(RaftStateMachineExceptionTests.java:172)
> {code}



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