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https://issues.apache.org/jira/browse/HDFS-17642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17896444#comment-17896444
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ASF GitHub Bot commented on HDFS-17642:
---------------------------------------

Jtdellaringa opened a new pull request, #7152:
URL: https://github.com/apache/hadoop/pull/7152

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   ### Description of PR
   Backport 
https://github.com/apache/hadoop/commit/96572764921706b1fecaf064490457d36d73ea6e
   
   ### How was this patch tested?
   na
   
   ### For code changes:
   
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endpoint declared according to the connector-specific documentation?
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> Support specifying Datanodes to exclude for balancing at source/target 
> granularity
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-17642
>                 URL: https://issues.apache.org/jira/browse/HDFS-17642
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer &amp; mover
>            Reporter: Joseph Dell'Aringa
>            Assignee: Joseph Dell'Aringa
>            Priority: Major
>              Labels: pull-request-available
>
> In some cases it can be useful to exclude a list of datanodes from being 
> selected as a target but remaining an option for a source and vice-versa. 
> The fix for this ticket will add an additional exclude list for source and 
> target datanodes.



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