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