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https://issues.apache.org/jira/browse/HDFS-10276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15247553#comment-15247553
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Yuanbo Liu commented on HDFS-10276:
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[~kevincox]Thanks a lot for your comment. I've reproduced this error and it
should be marked as a bug. I found that name node would check the access before
checking whether the file existed. It takes time to fix this bug since I have
to find out whether other file systems work as expected and how to fix it
appositely.
> 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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