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https://issues.apache.org/jira/browse/HADOOP-18582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17650825#comment-17650825
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Steve Loughran commented on HADOOP-18582:
-----------------------------------------
well spotted!
fancy supplying a patch?
> No need to clean tmp files in ditcp direct mode
> -----------------------------------------------
>
> Key: HADOOP-18582
> URL: https://issues.apache.org/jira/browse/HADOOP-18582
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
> Affects Versions: 3.3.4
> Reporter: 10000kang
> Priority: Major
>
> it not necessary to do `cleanupTempFiles` while ditcp commit job in direct
> mode, because it there is no temp files in direct mode.
> This clean operation will increase the task execution time, because it will
> get the list of files in the target path. When the number of files in the
> target path is very large, this operation will be very slow.
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