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https://issues.apache.org/jira/browse/YARN-2803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14197305#comment-14197305
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Craig Welch commented on YARN-2803:
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On Mac, cl.getResource("job.jar/") returns the directory (higher level entry),
on windows the same call is returning the jar file path (job.jar/job.jar). I
think this is the essential issue, because when asking subsequently for
"job.jar/lib/lib1.jar" the former finds the resource and the latter (win) will
not, as it is starting from the wrong place. This certainly looks like a
classpath issue, either different content or different order. still looking.
> MR distributed cache not working correctly on Windows after NodeManager
> privileged account changes.
> ---------------------------------------------------------------------------------------------------
>
> Key: YARN-2803
> URL: https://issues.apache.org/jira/browse/YARN-2803
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Reporter: Chris Nauroth
> Priority: Critical
>
> This problem is visible by running {{TestMRJobs#testDistributedCache}} or
> {{TestUberAM#testDistributedCache}} on Windows. Both tests fail. Running
> git bisect, I traced it to the YARN-2198 patch to remove the need to run
> NodeManager as a privileged account. The tests started failing when that
> patch was committed.
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