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Posted to common-dev@hadoop.apache.org by "Koji Noguchi (JIRA)" <ji...@apache.org> on 2008/08/12 23:15:44 UTC

[jira] Commented: (HADOOP-3939) DistCp should support an option for deleting non-existing files.

    [ https://issues.apache.org/jira/browse/HADOOP-3939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621981#action_12621981 ] 

Koji Noguchi commented on HADOOP-3939:
--------------------------------------

I can see users mis-using this feature and deleting some of their important files. 
Can we use Trash if it's enabled ?


> DistCp should support an option for deleting non-existing files.
> ----------------------------------------------------------------
>
>                 Key: HADOOP-3939
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3939
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: tools/distcp
>            Reporter: Tsz Wo (Nicholas), SZE
>
> One use case of DistCp is to sync two directories.  Currently, DistCp has an -update option for overwriting dst files if src is different from dst.  However, it is not enough for sync.  If there are some files in dst but not exist in src, there is no easy way to delete them.  We should add a new option, say -delete, so that DistCp will delete the non-existing in dst.

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