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https://issues.apache.org/jira/browse/HBASE-6721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14697394#comment-14697394
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Andrew Purtell commented on HBASE-6721:
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bq. the patch should be good to commit.
I made a branch 'hbase-6721-0.98' with the v2 0.98 patch applied and pushed it.
bq. will need to create an addendum for trunk patch.
Please post the addendum here, I'll commit it to hbase-6721 branch.
When updating the feature branches do you prefer me to merge or rebase? I
typically rebase in my own work but will do what you prefer, just say.
> 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: Francis Liu
> Attachments: 6721-master-webUI.patch, HBASE-6721
> GroupBasedLoadBalancer Sequence Diagram.xml, HBASE-6721-DesigDoc.pdf,
> HBASE-6721-DesigDoc.pdf, HBASE-6721-DesigDoc.pdf, HBASE-6721-DesigDoc.pdf,
> HBASE-6721_10.patch, HBASE-6721_11.patch, HBASE-6721_8.patch,
> HBASE-6721_9.patch, HBASE-6721_9.patch, HBASE-6721_94.patch,
> HBASE-6721_94.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_98_1.patch,
> HBASE-6721_98_2.patch, HBASE-6721_trunk.patch, HBASE-6721_trunk.patch,
> HBASE-6721_trunk.patch, HBASE-6721_trunk1.patch, HBASE-6721_trunk2.patch,
> balanceCluster Sequence Diagram.svg, immediateAssignments Sequence
> Diagram.svg, randomAssignment Sequence Diagram.svg, retainAssignment Sequence
> Diagram.svg, roundRobinAssignment Sequence Diagram.svg
>
>
> 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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