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From James Taylor <>
Subject Re: Introduction and question on lattices and adapters
Date Wed, 20 Jan 2016 21:37:20 GMT
Hi Michael,
We'd love for you to get involved on the Phoenix on Calcite work. I'd be
good to hear more on your thoughts about our implementation being "too
Phoenix-specific to enable the use of vanilla HBase". HBase has no query
language. We're basically leverage Calcite to do query optimization (at the
relational algebra level) over HBase.

On Wed, Jan 20, 2016 at 1:32 PM, Michael Mior <> wrote:

> Hello Calcite devs!
> I'm a PhD student at the database group of the University of Waterloo in
> Ontario, Canada. My work has focused on schema optimization for NoSQL
> databases (specifically Cassandra for the time being). You can see a piece
> of my recent work at the link below where I developed an automated tool to
> design efficient schemas for Cassandra based on a description of
> application workloads.
> I'm really interested on getting involved in Calcite and I have two main
> questions
> 1) What is the status of lattices in Calcite? I read the documentation (
> but it's unclear what's been
> implemented or how it works. Specifically, the documentation seems to
> suggest that Calcite will automatically select tiles to create. Are there
> any examples of using lattices I can look at?
> 2) Is there any work being done on an adapter for Cassandra or HBase? This
> is something I would be interested in contributing to. I know the Phoenix
> folks are working on integrating with Calcite, but it looks like their
> implementation is too Phoenix-specific to enable the use of vanilla HBase.
> Thanks!
> Cheers,
> --
> Michael Mior

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