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From Andrey Ilinykh <>
Subject Re: Minimum row size / minimum data point size
Date Thu, 03 Oct 2013 23:56:14 GMT
It may help.

On Thu, Oct 3, 2013 at 1:31 PM, Robert Va┼żan <> wrote:

> I need to store one trillion data points. The data is highly compressible
> down to 1 byte per data point using simple custom compression combined with
> standard dictionary compression. What's the most space-efficient way to
> store the data in Cassandra? How much per-row overhead is there if I store
> one data point per row?
> The data is particularly hard to group. It's a large number of time series
> with highly variable density. That makes it hard to pack subsets of the
> data into meaningful column families / wide rows. Is there a table layout
> scheme that would allow me to approach the 1B per data point without
> forcing me to implement complex abstraction layer on application level?

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