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https://issues.apache.org/jira/browse/HBASE-10127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13846644#comment-13846644
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Elliott Clark commented on HBASE-10127:
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bq.Elliott Clark, are you saying that trunk should get this patch or this
functionality?
* I think that it shouldn't need it. It has an idea of spreading the one table
to lots of region servers.
* Additionally the balancer in 96+ will fight with itself if we balance by
table only and then balance the whole cluster.
* Lastly I think that the getAssignmentByTable function is an abomination, and
should be removed. I would prefer to move things off that function and not
onto it.
** Deciding to balance by table or in total should be something the balancer
does, it shouldn't be part of the AM that's grouping by table name.
** Having the function return something completely different than the name
suggests because of a config is just hacky.
bq.For 0.94 this is a simple patch. I'd +1 for that part.
It will be broken for anyone with by table balancing turned off though (People
with lots of tables might have turned this off as it can result in a really bad
balance). Seems weird to have a command that will run but not work depending
upon the settings.
> support balance table
> ---------------------
>
> Key: HBASE-10127
> URL: https://issues.apache.org/jira/browse/HBASE-10127
> Project: HBase
> Issue Type: Improvement
> Components: master, shell
> Affects Versions: 0.94.14
> Reporter: cuijianwei
> Attachments: HBASE-10127-0.94-v1.patch
>
>
> HMaster provides a rpc interface : 'balance()' to balance all the regions
> among region servers in the cluster. Sometimes, we might want to balance all
> the regions belonging to a table while keeping the region assignments of
> other tables. This demand may reveal in a shared cluster where we want to
> balance regions for one application's table without affecting other
> applications. Therefore, will it be useful if we extend the current
> 'balance()' interface to only balance regions of the same table?
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