Jimmy Xiang created HBASE-6744:
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Summary: 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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