cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jeremy Hanna <jeremy.hanna1...@gmail.com>
Subject Re: rainbird question (why is the 1minute buffer needed?)
Date Mon, 23 May 2011 20:58:47 GMT

On May 23, 2011, at 2:23 PM, Ryan King wrote:

> 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.

Would https://issues.apache.org/jira/browse/CASSANDRA-2683 help with that?

Mime
View raw message