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https://issues.apache.org/jira/browse/HADOOP-3939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benoit Sigoure updated HADOOP-3939:
-----------------------------------
Hadoop Flags: Incompatible change,Reviewed (was: Reviewed)
> DistCp should support an option for deleting non-existing files.
> ----------------------------------------------------------------
>
> Key: HADOOP-3939
> URL: https://issues.apache.org/jira/browse/HADOOP-3939
> Project: Hadoop Common
> Issue Type: New Feature
> 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, 3939_20080829.patch,
> 3939_20080829b.patch, 3939_20080829b_0.18+3873_20080811b_0.18.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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