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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8457) Address file ownership issue for users in Administrators group on Windows.
Date Fri, 13 Jul 2012 05:25:35 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413503#comment-13413503
] 

Bikas Saha commented on HADOOP-8457:
------------------------------------

IMO, to me calling FileStatus.isOwnedBy() seems like a natural API to use. I agree it would
be nice to have something other than UGI to represent user/group information but unfortunately
there does not seem to be any such abstraction. I would ideally like to see FileStatus.getOwner().equals(ownerObj)
where ownerObj is an object representing the owner that encapsulates users/groups etc. Currently
ownerObj is simply a string name and it has worked because of simple 1 owner, 1 group Unix
model.
                
> Address file ownership issue for users in Administrators group on Windows.
> --------------------------------------------------------------------------
>
>                 Key: HADOOP-8457
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8457
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 1.1.0, 0.24.0
>            Reporter: Chuan Liu
>            Assignee: Ivan Mitic
>            Priority: Minor
>         Attachments: HADOOP-8457-branch-1-win_Admins(2).patch, HADOOP-8457-branch-1-win_Admins.patch
>
>
> On Linux, the initial file owners are the creators. (I think this is true in general.
If there are exceptions, please let me know.) On Windows, the file created by a user in the
Administrators group has the initial owner ‘Administrators’, i.e. the the Administrators
group is the initial owner of the file. As a result, this leads to an exception when we check
file ownership in SecureIOUtils .checkStat() method. As a result, this method is disabled
right now. We need to address this problem and enable the method on Windows.

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