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https://issues.apache.org/jira/browse/HDFS-5802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14875852#comment-14875852
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Hudson commented on HDFS-5802:
------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #415 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/415/])
HDFS-5802. NameNode does not check for inode type before traversing down a
path. (Xiao Chen via Yongjun Zhang) (yzhang: rev
2ff6faf954eb0f1ab2b339d589edb30040087669)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSPermission.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSPermissionChecker.java
> 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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