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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8973) DiskChecker cannot reliably detect an inaccessible disk on Windows with NTFS ACLs
Date Wed, 24 Oct 2012 21:16:11 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13483599#comment-13483599
] 

Chris Nauroth commented on HADOOP-8973:
---------------------------------------

One other note on that patch: I also noticed a bug in TestDiskChecker.java.  The _checkDirs
helper method was not using the isDir flag.  This meant that the test case testCheckDir_notDir_local
was not really testing what it intended.  I updated _checkDirs to make use of the flag.  If
isDir is true, then the test runs against a directory.  If isDir is false, then the test runs
against a file.

All of these tests pass on Mac and Windows with this patch.

                
> 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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