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From Ryan King <r...@twitter.com>
Subject Re: rainbird question (why is the 1minute buffer needed?)
Date Mon, 23 May 2011 19:23:20 GMT
On Mon, May 23, 2011 at 12:06 PM, Yang <teddyyyy123@gmail.com> wrote:
> Thanks Ryan,
>
> could you please share more details: according to what you observed in
> testing,  why was performance  worse if you do not do extra buffering?
>
> I was thinking (could be wrong)  that without extra buffering, the
> counter update goes to Memtable.putIfPresent() and
> CounterColumn.resolve(),
> which are still in-memory operations, and thus would not be so bad ?

You're forgetting the commit log.

-ryan

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