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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8973) DiskChecker cannot reliably detect an inaccessible disk on Windows with NTFS ACLs
Date Thu, 01 Nov 2012 05:17:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488471#comment-13488471
] 

Bikas Saha commented on HADOOP-8973:
------------------------------------

On branch-1-win internally winutils would be used to infer the Windows ACL's into rwx permissions.
If those changes have been ported over then it should work on Windows too. Other places use
similar logic which can be checked by looking for references to the FsAction.implies() method.
                
> DiskChecker cannot reliably detect an inaccessible disk on Windows with NTFS ACLs
> ---------------------------------------------------------------------------------
>
>                 Key: HADOOP-8973
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8973
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: util
>    Affects Versions: trunk-win
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HADOOP-8973-branch-trunk-win.patch
>
>
> DiskChecker.checkDir uses File.canRead, File.canWrite, and File.canExecute to check if
a directory is inaccessible.  These APIs are not reliable on Windows with NTFS ACLs due to
a known JVM bug.

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