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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5357) Job staging directory owner checking could fail on Windows
Date Tue, 27 Aug 2013 18:23:53 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13751547#comment-13751547
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Alejandro Abdelnur commented on MAPREDUCE-5357:
-----------------------------------------------

FYI, opened MAPREDUCE-5483 to revert this JIRA.
                
> 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
>             Fix For: 3.0.0, 2.1.0-beta
>
>         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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