I run master, regionserver and zookeeper on one server.  Good question though - 
does regionserver run multi-threaded?

-Jack


On Nov 28, 2010, at 4:44 AM, Marcus Chou <[email protected]> wrote:

> Hi all,
> As far as I know, one user account could have only one HBase instance,
> either HMaster or HRegionServer, run on a single machine. My question is,
> how many cores could HBase utilize, or rather could HBase scale on
> multi-core machines?
> 
> Thanks in advance.
> 
> -- 
> Best regards,
> Mark

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