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https://issues.apache.org/jira/browse/HBASE-55?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12568628#action_12568628
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stack commented on HBASE-55:
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Warning, half-baked idea ahead: Emit rate and size readings on an interval out
of hbase features such as memcache. Registered listeners can run pluggable
algorithms over the stream of readings to calculate 'load'. Other listeners
can make RRD graphs to show 'load', update or read rates, memcache usage, etc.
> [hbase] Improve Master region assignment function
> -------------------------------------------------
>
> Key: HBASE-55
> URL: https://issues.apache.org/jira/browse/HBASE-55
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Bryan Duxbury
> Fix For: 0.2.0
>
>
> We would like the master's region assignment function to take into account
> more factors when choosing where to assign regions.
>
> - More advanced accounting of load on regionserver - memory, # requests, etc
> - Don't deploy both daughter regions to the same regionserver
> - Assign regions where the underlying DFS blocks are hosted if possible
> Please add additional ideas in comments as they come up.
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