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stack commented on HBASE-6721: ------------------------------ [~eclark] if was in a separate module and feature name was changed to not be 'group', would you your -1? Seems like it well isolated currently going by Matteo review above. Could hack on shell so it picked up commands at runtime so we could have downstream modules add commands.... > 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 > Labels: hbase-6721 > 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_0.98_2.patch, HBASE-6721_10.patch, HBASE-6721_11.patch, > HBASE-6721_12.patch, HBASE-6721_13.patch, HBASE-6721_14.patch, > HBASE-6721_15.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_hbase-6721_addendum.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, > hbase-6721-v15-branch-1.1.patch, hbase-6721-v16.patch, hbase-6721-v17.patch, > hbase-6721-v18.patch, hbase-6721-v19.patch, hbase-6721-v20.patch, > hbase-6721-v21.patch, hbase-6721-v22.patch, hbase-6721-v23.patch, > hbase-6721-v25.patch, 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)