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Date: Sat, 22 Jun 2013 01:07:20 +0000 (UTC)
From: "Jason Lowe (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12616509.1353113658593.159422.1371863240617@arcas>
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Subject: [jira] [Updated] (HDFS-4205) fsck fails with symlinks
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     [ https://issues.apache.org/jira/browse/HDFS-4205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated HDFS-4205:
-----------------------------

       Resolution: Fixed
    Fix Version/s: 0.23.9
                   2.1.0-beta
                   3.0.0
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

I committed this to trunk, branch-2, branch-2.1-beta, and branch-0.23.
                
> fsck fails with symlinks
> ------------------------
>
>                 Key: HDFS-4205
>                 URL: https://issues.apache.org/jira/browse/HDFS-4205
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 3.0.0, 2.0.2-alpha
>            Reporter: Andy Isaacson
>            Assignee: Jason Lowe
>             Fix For: 3.0.0, 2.1.0-beta, 0.23.9
>
>         Attachments: HDFS-4205-2.patch, HDFS-4205.patch
>
>
> I created a symlink using
> {code}
> ...
>     FileContext fc = FileContext.getFileContext(dst.fs.getUri());
>     for (PathData src : srcs) {
>       fc.createSymlink(src.path, dst.path, false);
>     }
> {code}
> After doing this to create a symlink {{/foo/too.txt -> /foo/hello.txt}}, I tried to {{hdfs fsck}} and got the following:
> {code}
> [adi@host01 ~]$ hdfs fsck /
> Connecting to namenode via http://host01:21070
> FSCK started by adi (auth:SIMPLE) from /172.29.122.91 for path / at Fri Nov 16 15:59:18 PST 2012
> FSCK ended at Fri Nov 16 15:59:18 PST 2012 in 3 milliseconds
> hdfs://host01:21020/foo/hello.txt
> Fsck on path '/' FAILED
> {code}
> It's very surprising that an unprivileged user can run code which so easily causes a fundamental administration tool to fail.

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