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https://issues.apache.org/jira/browse/HADOOP-18582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17680392#comment-17680392
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ASF GitHub Bot commented on HADOOP-18582:
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cnauroth merged PR #5251:
URL: https://github.com/apache/hadoop/pull/5251
> No need to clean tmp files in distcp 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
> Assignee: 10000kang
> Priority: Major
> Labels: pull-request-available
>
> 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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