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https://issues.apache.org/jira/browse/HDFS-602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12753782#action_12753782
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Suresh Srinivas commented on HDFS-602:
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Here is the description for FileAlreadyExistsException: Used when target file
already exists for any operation and is not configured to be overwritten.
In this case, the intention of the exception is different. It does not indicate
the target already exists. It indicates that the parent directory of the target
is a file. Given this, I do not think the exception is appropriate.
> Atempt to make a directory under an existing file on DistributedFileSystem
> should throw an FileAlreadyExistsException instead of FileNotFoundException
> ------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-602
> URL: https://issues.apache.org/jira/browse/HDFS-602
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Boris Shkolnik
> Assignee: Boris Shkolnik
> Attachments: HDFS-602.patch
>
>
> Atempt to make a directory under an existing file on DistributedFileSystem
> should throw an FileAlreadyExistsException instead of FileNotFoundException.
> Also we should unwrap this exception from RemoteException
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