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https://issues.apache.org/jira/browse/HBASE-6721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13467059#comment-13467059
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Francis Liu commented on HBASE-6721:
------------------------------------

Stack, great

Ram, it'll be persisted in a file. Our thoughts were that the approach would be 
more invasive (and complex) if the information would be persisted in a table 
since we would have to know the group of a table before we can assign them to a 
region server and read it.
                
> RegionServer Group based Assignment
> -----------------------------------
>
>                 Key: HBASE-6721
>                 URL: https://issues.apache.org/jira/browse/HBASE-6721
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Francis Liu
>            Assignee: Vandana Ayyalasomayajula
>             Fix For: 0.96.0
>
>         Attachments: HBASE-6721-DesigDoc.pdf
>
>
> In multi-tenant deployments of HBase, it is likely that a RegionServer will 
> be serving out regions from a number of different tables owned by various 
> client applications. Being able to group a subset of running RegionServers 
> and assign specific tables to it, provides a client application a level of 
> isolation and resource allocation.
> The proposal essentially is to have an AssignmentManager which is aware of 
> RegionServer groups and assigns tables to region servers based on groupings. 
> Load balancing will occur on a per group basis as well. 
> This is essentially a simplification of the approach taken in HBASE-4120. See 
> attached document.

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