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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9652) Allow RawLocalFs#getFileLinkStatus to fill in the link owner and mode if requested
Date Fri, 24 Jan 2014 15:18:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Lowe updated HADOOP-9652:
-------------------------------

      Issue Type: Improvement  (was: Bug)
         Summary: Allow RawLocalFs#getFileLinkStatus to fill in the link owner and mode if
requested  (was: RawLocalFs#getFileLinkStatus does not fill in the link owner and mode)
    Hadoop Flags: Reviewed

Updating summary to reflect this is adding the ability to get a link's owner and mode but
only if requested.  Filed HADOOP-10276 to track the fix for the original reported issue.

> Allow RawLocalFs#getFileLinkStatus to fill in the link owner and mode if requested
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-9652
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9652
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>             Fix For: 2.4.0
>
>         Attachments: 0001-temporarily-disable-HADOOP-9652.patch, hadoop-9452-1.patch,
hadoop-9652-2.patch, hadoop-9652-3.patch, hadoop-9652-4.patch, hadoop-9652-5.patch, hadoop-9652-6.patch,
hadoop-9652-workaround.patch
>
>
> {{RawLocalFs#getFileLinkStatus}} does not actually get the owner and mode of the symlink,
but instead uses the owner and mode of the symlink target.  If the target can't be found,
it fills in bogus values (the empty string and FsPermission.getDefault) for these.
> Symlinks have an owner distinct from the owner of the target they point to, and getFileLinkStatus
ought to expose this.
> In some operating systems, symlinks can have a permission other than 0777.  We ought
to expose this in RawLocalFilesystem and other places, although we don't necessarily have
to support this behavior in HDFS.



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