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https://issues.apache.org/jira/browse/HBASE-15533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16820830#comment-16820830
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Thiruvel Thirumoolan commented on HBASE-15533:
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[~zodvik],

Thanks for the interest. Most of this patch should work as it is. Since 
majority of these tests dependent on FavoredStochastic unit tests, lemme get 
HBASE-18349 in before continuing to work on this. I think I have a patch to fix 
all but one unit test. So will post a partial patch or the whole patch on 
HBASE-18349 and then will resume work on this.

> Add RSGroup Favored Balancer
> ----------------------------
>
>                 Key: HBASE-15533
>                 URL: https://issues.apache.org/jira/browse/HBASE-15533
>             Project: HBase
>          Issue Type: Sub-task
>          Components: FavoredNodes
>            Reporter: Francis Liu
>            Assignee: Thiruvel Thirumoolan
>            Priority: Major
>         Attachments: HBASE-15533.master.001.patch, 
> HBASE-15533.master.002.patch, HBASE-15533.patch, HBASE-15533.rough.draft.patch
>
>
> HBASE-16942 added favored stochastic load balancer so we can pick and choose 
> nodes to assign based on the favored nodes and load/locality. The intention 
> of this jira is to add a group based load balancer on top of the favored 
> stochastic balancer. This will ensure splits/merges will only use favored 
> nodes from that group and will inherit from the parents appropriately.



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