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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 Tue, 05 Mar 2013 00:57:17 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13592877#comment-13592877
] 

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

Well. In that case, it would be a standard pattern everywhere because everywhere code simply
checks the value of the permissions and not whether the process checking that value actually
has the right membership wrt that value. Isnt it so? Irrespective of OS.

Also, one can make a case that checkDir(File dir) should end up calling checkDir(FileSystem,
FilePath, "rwx") instead of duplicating the logic.

                
> 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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