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https://issues.apache.org/jira/browse/HDFS-15346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17135615#comment-17135615
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Jinglun commented on HDFS-15346:
--------------------------------

Your are genius [~linyiqun] !  Thanks your brilliant comments, the improvement 
is great ! The unit tests run very fast now. I followed up all the changes. And 
I did a little refactor based on your improvement. The logic of the improvement 
is the same as you suggested. I only extracted a method and refactored the 
class RunningJobStatus to make it easier to read. Please let me know your 
thoughts, I'm also ok to keep it just the same as you suggested.

 
{quote}Can you update following description in router option? I update this 
content as well but seems this was not addressed in the latest patch.
{quote}
Sorry I missed this. Update at v11.
{quote}Method name cleanUpBeforeInitDistcp can be renamed to 
pathCheckBeforeInitDistcp since we don't do any cleanup operation now.
{quote}
Address at v11.

> RBF: DistCpFedBalance implementation
> ------------------------------------
>
>                 Key: HDFS-15346
>                 URL: https://issues.apache.org/jira/browse/HDFS-15346
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Jinglun
>            Assignee: Jinglun
>            Priority: Major
>         Attachments: HDFS-15346.001.patch, HDFS-15346.002.patch, 
> HDFS-15346.003.patch, HDFS-15346.004.patch, HDFS-15346.005.patch, 
> HDFS-15346.006.patch, HDFS-15346.007.patch, HDFS-15346.008.patch, 
> HDFS-15346.009.patch, HDFS-15346.010.patch, HDFS-15346.011.patch
>
>
> Patch in HDFS-15294 is too big to review so we split it into 2 patches. This 
> is the second one. Detail can be found at HDFS-15294.



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