It may help. https://docs.google.com/spreadsheet/ccc?key=0Atatq_AL3AJwdElwYVhTRk9KZF9WVmtDTDVhY0xPSmc#gid=0
On Thu, Oct 3, 2013 at 1:31 PM, Robert Važan <robert.va...@gmail.com> 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? > >
