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Date: Thu, 28 Aug 2008 18:51:44 -0700 (PDT)
From: "Tsz Wo (Nicholas), SZE (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-3939) DistCp should support an option for
 deleting non-existing files.
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     [ https://issues.apache.org/jira/browse/HADOOP-3939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo (Nicholas), SZE updated HADOOP-3939:
-------------------------------------------

    Status: Patch Available  (was: Open)

submit again.

> 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
>            Assignee: Tsz Wo (Nicholas), SZE
>             Fix For: 0.19.0
>
>         Attachments: 3939_20080825.patch, 3939_20080825b.patch, 3939_20080826.patch, 3939_20080828.patch
>
>
> 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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