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From Todd Lipcon <t...@cloudera.com>
Subject Re: put to WAL and scan/get operation concurrency
Date Fri, 06 May 2011 18:34:46 GMT
On Fri, May 6, 2011 at 11:19 AM, pob <peterob333@gmail.com> wrote:

> The data for those regions is replicated, but only 1 region server
> > does the management of that data.
> >
> >
> So does it mean, there isnt "scalling for reads"? {mean higher replica ->
> better read throughput}

Reads are scaled by splitting regions and distributing them around multiple
servers. If you have one super-hot row, it should fit in cache and give you
some >20k reads/second. If you need more reads/sec on a single row than
that, you'll need to add your own caching layer in front.

Todd Lipcon
Software Engineer, Cloudera

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