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https://issues.apache.org/jira/browse/HBASE-3268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12934927#action_12934927
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Todd Lipcon commented on HBASE-3268:
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I think the idea of triggering balance when we get a new server is a good one.
One thing we want to be a little careful of is the situation when someone flips
on 10 new servers "at the same time". Rather than triggering a rebalance for
each (and thus lots of churn), we want a little bit of lag before the rebalance.
Maybe when a new server is added, we trigger the rebalance in 5-10 seconds?
> Auto-tune balance frequency based on cluster size
> -------------------------------------------------
>
> Key: HBASE-3268
> URL: https://issues.apache.org/jira/browse/HBASE-3268
> Project: HBase
> Issue Type: Improvement
> Components: master
> Reporter: Todd Lipcon
>
> Right now we only balance the cluster once every 5 minutes by default. This
> is likely to confuse new users. When you start a new region server, you
> expect it to pick up some load very quickly, but right now you have to wait 5
> minutes for it to start doing anything in the worst case.
> We could/should also add a button/shell command to "trigger balance now"
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