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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HBASE-6721) RegionServer Group based Assignment
Date Mon, 19 Aug 2013 18:16:51 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13744080#comment-13744080
] 

Andrew Purtell edited comment on HBASE-6721 at 8/19/13 6:15 PM:
----------------------------------------------------------------

Thanks for clearing it up guys.

Edit: Would be good if we can get this into 0.98 and also a 0.96 minor, then there's a great
rolling upgrade story. Please let me know if I can be helpful there.
                
      was (Author: apurtell):
    Thanks for clearing it up guys.
                  
> 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: 6721-master-webUI.patch, HBASE-6721_10.patch, HBASE-6721_8.patch,
HBASE-6721_94_2.patch, HBASE-6721_94_3.patch, HBASE-6721_94_3.patch, HBASE-6721_94_4.patch,
HBASE-6721_94_5.patch, HBASE-6721_94_6.patch, HBASE-6721_94_7.patch, HBASE-6721_94.patch,
HBASE-6721_94.patch, HBASE-6721_9.patch, HBASE-6721_9.patch, HBASE-6721-DesigDoc.pdf, HBASE-6721-DesigDoc.pdf,
HBASE-6721-DesigDoc.pdf, HBASE-6721-DesigDoc.pdf, HBASE-6721_trunk.patch, HBASE-6721_trunk.patch,
HBASE-6721_trunk.patch
>
>
> 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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