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https://issues.apache.org/jira/browse/HBASE-7582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13555248#comment-13555248
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Andrew Purtell commented on HBASE-7582:
---------------------------------------

I should say pseudorandomized with the ability to set the seed for 
repeatability. This may be a tall/impossible order. I'm not familiar with 
JUnit/Surefire internals sufficient.y 
                
> Unit test execution mode that randomizes test order
> ---------------------------------------------------
>
>                 Key: HBASE-7582
>                 URL: https://issues.apache.org/jira/browse/HBASE-7582
>             Project: HBase
>          Issue Type: Improvement
>          Components: test
>            Reporter: Andrew Purtell
>            Priority: Minor
>
> I've also come around to agreeing with Jon Hseih that we should have a test 
> mode that somehow randomizes test order to catch issues where unit test cases 
> are written with the assumption of a certain order. It should not be on by 
> default but can be enabled when evaluating patches for commit that include 
> new tests.
> Case in point is HBASE-7581, which seems to be due to a new test added in 
> HBASE-5498. The patch on HBASE-5498 tested out all green in local tests prior 
> to commit. 

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