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https://issues.apache.org/jira/browse/HDFS-10276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15249555#comment-15249555
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Yuanbo Liu commented on HDFS-10276:
-----------------------------------
[~cmccabe] Thanks for your comment. Yes I agree with you that we should take
unprivileged users as consider. But in this case, NameNode should prevent any
further operation since it knows the "parent path" is a file, not a real path.
I think it's more reasonable to throw {{ParentNotDirectoryException}} rather
than {{AccessControlException}}. See the behavior of Linux as below:
{code}
[yuanbo@oc7702007844 ~]$ ls test/test1
ls: cannot access test/test1: Not a directory
{code}
One thing should be rectified is that {{getFileInfo}} in {{DFSClient}} causes
this problem instead of {{exists}} method.
> Different results for exist call for file.ext/name
> --------------------------------------------------
>
> Key: HDFS-10276
> URL: https://issues.apache.org/jira/browse/HDFS-10276
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kevin Cox
> Assignee: Yuanbo Liu
>
> Given you have a file {{/file}} an existence check for the path
> {{/file/whatever}} will give different responses for different
> implementations of FileSystem.
> LocalFileSystem will return false while DistributedFileSystem will throw
> {{org.apache.hadoop.security.AccessControlException: Permission denied: ...,
> access=EXECUTE, ...}}
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