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https://issues.apache.org/jira/browse/HADOOP-771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12496982
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Milind Bhandarkar commented on HADOOP-771:
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>> think the problem is that 'FileSystem#remove(new Path(""))' removes one's 
>> home directory. 

I think that's just one part of the problem.

A single RPC to delete an entire directory structure is the main problem, I 
think. If deleting a directory were to take multiple roundtrips between client 
and namenode, then it would be possible to ^C the client to stop wiping out the 
entire tree. No ?

> Namenode should return error when trying to delete non-empty directory
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-771
>                 URL: https://issues.apache.org/jira/browse/HADOOP-771
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.8.0
>         Environment: all
>            Reporter: Milind Bhandarkar
>         Assigned To: Sameer Paranjpye
>
> Currently, the namenode.delete() method allows recursive deletion of a 
> directory. That is, even a non-empty directory could be deleted using 
> namenode.delete(). To avoid costly programmer errors, the namenode should not 
> remove the non-empty directories in this method. Recursively deleting 
> directory should either be performed with listPaths() followed by a delete() 
> for every path, or with a specific namenode method such as deleteRecursive().

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