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From Sylvain Lebresne <sylv...@yakaz.com>
Subject Re: Bad read performances: 'few rows of many columns' vs 'many rows of few columns'
Date Wed, 10 Mar 2010 15:58:22 GMT
> So did you disable the row cache entirely?

Yes (getting back reasonable performances).

>> 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
>
>
>

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