[jira] [Created] (HDFS-5802) NameNode does not check for inode type before traversing down a path

["Harsh J (JIRA)" <ji...@apache.org>]

Harsh J created HDFS-5802:
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             Summary: 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
            Priority: Trivial


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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