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Date: Tue, 8 Aug 2006 15:39:17 -0700 (PDT)
From: "Owen O'Malley (JIRA)" <jira@apache.org>
To: hadoop-dev@lucene.apache.org
Subject: [jira] Commented: (HADOOP-431) default behaviour of dfsShell -rm
 should resemble 'rm -i', not 'rm -rf'
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    [ http://issues.apache.org/jira/browse/HADOOP-431?page=comments#action_12426760 ] 
            
Owen O'Malley commented on HADOOP-431:
--------------------------------------

-1 on making -i the default. (*smile* "-1" even looks like "-i")

Part of the problem with even making the unix default the default is that in Hadoop, every logical file is modelled as a directory with a bunch of files in it (eg. my-data/part-* ). I'd suggest that the default should be willing to delete a first-level directory, but not a second-level or higher directory. (I'm defining a first-level directory to mean a directory with no sub-directories.)

> default behaviour of dfsShell -rm should resemble 'rm -i', not 'rm -rf'
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-431
>                 URL: http://issues.apache.org/jira/browse/HADOOP-431
>             Project: Hadoop
>          Issue Type: Improvement
>            Reporter: Yoram Arnon
>
> when using hadoop dfs -rm <path> the behaviour is like that of rm -rf.
> That's very dangerous.
> A better behaviour would require a confirmation and allow removal of files only by default. Optional flags would allow recursive and forced deleted.

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