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https://issues.apache.org/jira/browse/HDFS-15640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216705#comment-17216705
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Xiaoqiao He commented on HDFS-15640:
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Thanks [~LiJinglun] involve me here. [~linyiqun] would be more proper to take
this reviews. If Yiqun don't have time, I will take it this week. Thanks
[~LiJinglun].
> RBF: Add fast distcp threshold to FedBalance.
> ---------------------------------------------
>
> Key: HDFS-15640
> URL: https://issues.apache.org/jira/browse/HDFS-15640
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Attachments: HDFS-15640.001.patch
>
>
> Currently in the DistCpProcedure it must submit distcp round by round until
> there is no diff to go to the final distcp stage. The condition is very
> strict. If the distcp could finish in an acceptable period then we don't need
> to wait for no diff. For example if 3 consecutive distcp jobs all finish
> within 10 minutes then we can predict the final distcp could also finish
> within 10 minutes. So we can start the final distcp directly.
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