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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 Fri, 08 Mar 2013 23:25:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13597686#comment-13597686
] 

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

{quote}
I noticed that testCheckDir_notListable and testCheckDir_notListable_local fail on my machine
(stacks are below, will take a look now) (hint: I am running as admin)
{quote}

Ivan, I would appreciate any help you can offer on this.  I can't repro the problem on my
side, even when running as admin.  I'm on Windows Server 2008 R2 64-bit (in case specific
Windows version is causing a difference).

{quote}
I would prefer that we make Shell#getSetPermissionCommand accept File instead of a string
(we should do the same for other Shell methods that accept local paths, but this is orthogonal)
{quote}

Please note that I am only merging an existing Shell method from trunk to branch-1-win.  If
we make it accept File on branch-1-win, then we'll set ourselves up for merge conflicts later
as we try to manage patches across the 2 branches.  If we change the trunk version, then it's
going to break about 15 different call sites that have nothing to do with DiskChecker, so
it's not appropriate to change the trunk version within the scope of this jira.  The safest
option is to defer this change to a different jira for refactoring all of the Shell methods
like you suggested.  Is there a jira for that yet?

                
> 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: 3.0.0, 1-win
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HADOOP-8973.3.patch, HADOOP-8973-branch-1-win.3.patch, HADOOP-8973-branch-trunk-win.2.patch,
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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