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https://issues.apache.org/jira/browse/HBASE-6721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13492658#comment-13492658
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Francis Liu commented on HBASE-6721:
------------------------------------
{quote}
Have you also considered adding a state mirror in ZK to avoid the need for
random assignment of catalog tables and the group table if it is available on
(re)start?
{quote}
I'm wondering if it's worth the added complexity it introduces. For security it
was needed since consumers of acl data was distributed and zk could do the
orchestration. But in this case the data is only read and written to by the
active master which to me makes mirroring things in ZK more of an enhancement.
I don't feel strongly about it but I'm more inclined to keep things simple for
now and see how things go. Thoughts?
> 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_94_2.patch, HBASE-6721_94_3.patch,
> HBASE-6721_94_3.patch, HBASE-6721_94.patch, HBASE-6721_94.patch,
> 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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