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https://issues.apache.org/jira/browse/HADOOP-9287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575092#comment-13575092
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Chris Nauroth commented on HADOOP-9287:
---------------------------------------

Tsuyoshi and Andrey, thank you for investigating this.  The speedup sounds 
impressive!

When you're ready to publish the patch, I'd like to make sure that we test on 
Windows too.  More specifically, I'd like to test the effect of merging it to 
branch-trunk-win.  If you don't have access to a Windows VM, I'd be happy to 
test the patch myself.

One thing we've noticed during Windows compatibility work is that some of the 
test code had race conditions that would cause failures on Windows that were 
not showing up at all on Linux, just due to differences in the way the OS 
chooses to schedule threads.  Running the parallel tests on both Linux and 
Windows is more likely to reveal race conditions.

                
> Parallel testing hadoop-auth and hadoop-common
> ----------------------------------------------
>
>                 Key: HADOOP-9287
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9287
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 3.0.0
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>         Attachments: HADOOP-9287.1.patch
>
>
> The maven surefire plugin supports parallel testing feature. By using it, the 
> tests can be run more faster.

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