incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "David Dabbs" <dmda...@gmail.com>
Subject RE: Bad read performances: 'few rows of many columns' vs 'many rows of few columns'
Date Wed, 10 Mar 2010 15:48:20 GMT
So did you disable the row cache entirely?

> From: Sylvain Lebresne 
> 
> Well, I've found the reason.
> The default cassandra configuration use a 10% row cache.
> And the row cache reads all the row each time. So it was indeed reading
> the
> full row each time even though the request was asking for only one
> column.
> 
> Sylvain



Mime
View raw message