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https://issues.apache.org/jira/browse/MAPREDUCE-5357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13698610#comment-13698610
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Chris Nauroth commented on MAPREDUCE-5357:
------------------------------------------
{quote}
The user running the tests need to be an Administrators group user.
{quote}
This explains why I wasn't seeing the problem earlier. I've been running as a
non-admin user. I've verified that the tests still pass when running as a
non-admin user.
+1 for the patch. I'll commit this.
> Job staging directory owner checking could fail on Windows
> ----------------------------------------------------------
>
> Key: MAPREDUCE-5357
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5357
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.1.0-beta
> Reporter: Chuan Liu
> Assignee: Chuan Liu
> Priority: Minor
> Attachments: MAPREDUCE-5357-trunk.patch
>
>
> In {{JobSubmissionFiles.getStagingDir()}}, we have following code that will
> throw exception if the directory owner is not the current user.
> {code:java}
> String owner = fsStatus.getOwner();
> if (!(owner.equals(currentUser) || owner.equals(realUser))) {
> throw new IOException("The ownership on the staging directory " +
> stagingArea + " is not as expected. " +
> "It is owned by " + owner + ". The directory must " +
> "be owned by the submitter " + currentUser + " or " +
> "by " + realUser);
> }
> {code}
> This check will fail on Windows when the underlying file system is
> LocalFileSystem. Because on Windows, the default file or directory owner
> could be "Administrators" group if the user belongs to "Administrators" group.
> Quite a few MR unit tests that runs MR mini cluster with localFs as
> underlying file system fail because of this.
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