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https://issues.apache.org/jira/browse/MAPREDUCE-4980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16122733#comment-16122733
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Allen Wittenauer commented on MAPREDUCE-4980:
---------------------------------------------

A few notes:

* TestMRJobs doesn't actually appear to be a unit test.  It looks more like an 
integration test.
* It currently takes about 18 minutes on my laptop to run.  It's significantly 
longer on Jenkins.
* Most of that time is spend starting up and bringing down clusters.
* Is there any reason for it to do that? i.e., why can't can't it just bring up 
one cluster, do the tests, then shut it down?



> Parallel test execution of hadoop-mapreduce-client-core
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-4980
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4980
>             Project: Hadoop Map/Reduce
>          Issue Type: Test
>          Components: test
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Tsuyoshi Ozawa
>            Assignee: Andrey Klochkov
>         Attachments: MAPREDUCE-4980.010.patch, MAPREDUCE-4980.1.patch, 
> MAPREDUCE-4980--n3.patch, MAPREDUCE-4980--n4.patch, MAPREDUCE-4980--n5.patch, 
> MAPREDUCE-4980--n6.patch, MAPREDUCE-4980--n7.patch, MAPREDUCE-4980--n7.patch, 
> MAPREDUCE-4980--n8.patch, MAPREDUCE-4980.patch
>
>
> The maven surefire plugin supports parallel testing feature. By using it, the 
> tests can be run more faster.



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