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From Jonathan Ellis <>
Subject Re: Bitmap indexes - reviving CASSANDRA-1472
Date Wed, 10 Apr 2013 18:57:08 GMT
If you mean, "Can someone help me figure out how to get started updating
these old patches to trunk and cleaning out the Avro?" then yes, I've been
knee-deep in indexing code recently.

On Wed, Apr 10, 2013 at 11:34 AM, mrevilgnome <> wrote:

> I'm currently building a distributed cluster on top of cassandra to perform
> fast set manipulation via bitmap indexes. This gives me the ability to
> perform unions, intersections, and set subtraction across sub-queries.
> Currently I'm storing index information for thousands of dimensions as
> cassandra rows, and my cluster keeps this information cached, distributed
> and replicated in order to answer queries.
> Every couple of days I think to myself this should really exist in C*.
> Given all the benifits would there be any interest in
> reviving CASSANDRA-1472?
> Some downsides are that this is very memory intensive, even for sparse
> bitmaps.

Jonathan Ellis
Project Chair, Apache Cassandra

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