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https://issues.apache.org/jira/browse/HDFS-16702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17574439#comment-17574439
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Steve Vaughan commented on HDFS-16702:
--------------------------------------

I'd suggest we just return the original exception as the cause of the 
AssertError.  Testing frameworks will capture the AssertError and report the 
stack trace providing the actual error.

> MiniDFSCluster should report cause of exception in assertion error
> ------------------------------------------------------------------
>
>                 Key: HDFS-16702
>                 URL: https://issues.apache.org/jira/browse/HDFS-16702
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>         Environment: Tests running in the Hadoop dev environment image.
>            Reporter: Steve Vaughan
>            Assignee: Viraj Jasani
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> When the MiniDFSClsuter detects that an exception caused an exit, it should 
> include that exception as the cause for the AssertionError that it throws.  
> The current AssertError simply reports the message "Test resulted in an 
> unexpected exit" and provides a stack trace to the location of the check for 
> an exit exception.



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