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https://issues.apache.org/jira/browse/HBASE-6744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13450971#comment-13450971
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Jimmy Xiang commented on HBASE-6744:
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StochasticLoadBalancer is powerful. It looks very good to me. Why don't we
deprecate the default one and make this one the new default?
> Per table balancing could cause regions unbalanced overall
> ----------------------------------------------------------
>
> Key: HBASE-6744
> URL: https://issues.apache.org/jira/browse/HBASE-6744
> Project: HBase
> Issue Type: Improvement
> Reporter: Jimmy Xiang
>
> Per table balancing just balances regions based on tables. However, overall,
> regions could be seriously unbalanced.
> For example, if you shutdown all most all region serves in a cluster, then
> create tons of new tables (no region pre-split), then start up all region
> servers. You will see the regions won't move to other region servers since
> they are balanced per table (only one region for a table at this moment).
> If we can make the balance algorithm sophisticated enough, we don't need the
> configuration hbase.master.loadbalance.bytable. We can do the regular and
> bytable balancing at the same time.
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