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https://issues.apache.org/jira/browse/RATIS-303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16604878#comment-16604878
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Tsz Wo Nicholas Sze commented on RATIS-303:
-------------------------------------------

Thanks [~shashikant].
- Could you describe how the patch fix NullPointerException?  It is not easy to 
see from the patch.
- For the new TestRetryOnStateMachineException, could you move it from 
ratis-example to ratis-server and add subclasses for the RPCs. See 
RaftExceptionBaseTest and its subclasses.  It was a mistake to put the 
non-example test in ratis-example.  It would be great if you could also move 
TestRaftStateMachineException.

> TestRaftStateMachineException is failing with NullPointerException
> ------------------------------------------------------------------
>
>                 Key: RATIS-303
>                 URL: https://issues.apache.org/jira/browse/RATIS-303
>             Project: Ratis
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 0.3.0
>            Reporter: Mukul Kumar Singh
>            Assignee: Shashikant Banerjee
>            Priority: Major
>              Labels: ozone
>             Fix For: 0.3.0
>
>         Attachments: RATIS-303.01.patch
>
>
> TestRaftStateMachineException is failing with the following exception
> {code}
> [ERROR] 
> testRetryOnExceptionDuringReplication[2](org.apache.ratis.statemachine.TestRaftStateMachineException)
>   Time elapsed: 0.001 s  <<< ERROR!
> java.lang.NullPointerException
>       at 
> org.apache.ratis.statemachine.TestRaftStateMachineException.testRetryOnExceptionDuringReplication(TestRaftStateMachineException.java:139)
> {code}



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