You are viewing a plain text version of this content. The canonical link for it is here.

Posted to user@cassandra.apache.org by Bill Hastings <bl...@gmail.com> on 2012/09/18 00:23:53 UTC

Bloom Filters in Cassandra

How are bloom filters used in Cassandra? Is my understanding correct
in that there is one per SSTable encapsulating what keys are in the
SSTable? Please advise.

Re: Bloom Filters in Cassandra

Posted by aaron morton <aa...@thelastpickle.com>.

Some more background http://spyced.blogspot.com/2009/01/all-you-ever-wanted-to-know-about.html

In additional to the SSTable bloom filter for keys, there are row level bloom filters for columns. 

Cheers

-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 18/09/2012, at 1:04 PM, Jason Wee <pe...@gmail.com> wrote:

> These links may help in your understanding.
> 
> http://wiki.apache.org/cassandra/ArchitectureOverview#line-132
> http://wiki.apache.org/cassandra/ArchitectureSSTable
> 
> On Tue, Sep 18, 2012 at 6:23 AM, Bill Hastings <bl...@gmail.com> wrote:
> How are bloom filters used in Cassandra? Is my understanding correct
> in that there is one per SSTable encapsulating what keys are in the
> SSTable? Please advise.
>

Re: Bloom Filters in Cassandra

Posted by Jason Wee <pe...@gmail.com>.

These links may help in your understanding.

http://wiki.apache.org/cassandra/ArchitectureOverview#line-132
http://wiki.apache.org/cassandra/ArchitectureSSTable

On Tue, Sep 18, 2012 at 6:23 AM, Bill Hastings <bl...@gmail.com>wrote:

> How are bloom filters used in Cassandra? Is my understanding correct
> in that there is one per SSTable encapsulating what keys are in the
> SSTable? Please advise.
>