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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5802) NameNode does not check for inode type before traversing down a path
Date Fri, 18 Sep 2015 14:40:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Yongjun Zhang updated HDFS-5802:
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 2.8.0
           Status: Resolved  (was: Patch Available)

Committed to trunk and branch-2.

Thanks Xiao for the contribution!

> NameNode does not check for inode type before traversing down a path
> --------------------------------------------------------------------
>                 Key: HDFS-5802
>                 URL: https://issues.apache.org/jira/browse/HDFS-5802
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.0.0-alpha
>            Reporter: Harsh J
>            Assignee: Xiao Chen
>            Priority: Trivial
>              Labels: supportability
>             Fix For: 2.8.0
>         Attachments: HDFS-5802.001.patch, HDFS-5802.002.patch, HDFS-5802.003.patch, HDFS-5802.004.patch,
HDFS-5802.005.patch, HDFS-5802.006.patch
> This came up during the discussion on a forum at http://community.cloudera.com/t5/Batch-Processing-and-Workflow/Permission-denied-access-EXECUTE-on-getting-the-status-of-a-file/m-p/5049#M162
surrounding an fs.exists(…) check running on a path /foo/bar, where /foo is a file and not
a directory.
> In such a case, NameNode yields a user-confusing message of {{Permission denied: user=foo,
access=EXECUTE, inode="/foo":foo:foo:-rw-r--r--}} instead of clearly saying (and realising)
"/foo is not a directory" or "/foo is a file" before it tries to traverse further down to
locate the requested path.

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