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https://issues.apache.org/jira/browse/MAPREDUCE-4098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13245144#comment-13245144
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Ahmed Radwan commented on MAPREDUCE-4098:
-----------------------------------------

Thanks Tucu!

The environment CLASSPATH is populated using the value for 
YarnConfiguration.YARN_APPLICATION_CLASSPATH from yarn-default.xml and then the 
test again checks if it contains the classpath from the 
YarnConfiguration.YARN_APPLICATION_CLASSPATH value, so the test will always 
succeed regardless of the value set for 
YarnConfiguration.YARN_APPLICATION_CLASSPATH. 

Do we need to keep the check against the hardcoded classpath values so the test 
will fail if they were changed in yarn-default.xml? 
                
> TestMRApps testSetClasspath fails
> ---------------------------------
>
>                 Key: MAPREDUCE-4098
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4098
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 2.0.0
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>             Fix For: 2.0.0
>
>         Attachments: MAPREDUCE-4098.patch
>
>
> The assertion of this test is testing for equality, as the generated 
> classpath file is in the classpath the test fails.
> Instead, the test should test for the expected path elements to be in the 
> classspath.

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