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https://issues.apache.org/jira/browse/HADOOP-4901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12659096#action_12659096
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Steve Loughran commented on HADOOP-4901:
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Some more thoughts here: 
-regardless of what framework gets used, the report XML needs to be redone. 
This is something I've discussed in Ant before, and a <junit4> task would be an 
opportunity to go forwards with a newer format. Even if still XML, it shouldnt 
buffer everything in memory until the the end of the run just to add some 
statistics as a attributes on the root node. 

-we'd have to work with the maven2 and test ng teams, as well as the various CI 
tools to see that it met their needs too. Or we could do a hadoop-specific one 
that pushed results *and log data* straight into a DFS file.



> Upgrade to JUnit 4
> ------------------
>
>                 Key: HADOOP-4901
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4901
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: test
>            Reporter: Tom White
>            Assignee: Tom White
>
> Amongst other things, JUnit 4 has better support for class-wide set up and 
> tear down (via @BeforeClass and @AfterClass annotations), and more flexible 
> assertions (http://junit.sourceforge.net/doc/ReleaseNotes4.4.html). It would 
> be nice to be able to take advantage of these features in tests we write.
> JUnit 4 can run tests written for JUnit 3.8.1 without any changes.

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