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From aaron morton <>
Subject Re: SSTable Index and Metadata - are they cached in RAM?
Date Thu, 16 Aug 2012 22:06:29 GMT
> What about SSTable index, 
Not sure what you are referring to there. Each row has a in a SStable has a bloom filter and
may have an index of columns. This is not cached. 

See or

>  and Metadata?

This is the meta data we hold in memory for every open sstable


Aaron Morton
Freelance Developer

On 16/08/2012, at 7:34 PM, Maciej Miklas <> wrote:

> Hi all,
> bloom filter for row keys is always in RAM. What about SSTable index, and Metadata?
> Is it cached by Cassandra, or it relays on memory mapped files?
> Thanks,
> Maciej

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