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From Camuel Gilyadov <cam...@gmail.com>
Subject Re: Is there a place for C/C++ contribution?
Date Tue, 13 Nov 2012 05:01:05 GMT

 I would recommend you start implementing physical plan generation and
executor. I would recommend going to
https://github.com/ApacheDrill/Brainstorm/wiki/Apache-Drill-Links and then
going to the section named "Code generation / Physical plan generation" and
start going through the material. Unfortunately Thomas cannot open-source
his code but he said it should be a strait-forward implementation as
everything covered in the paper.

I could help you with assembly and codegen if you need help and I assume
Thomas would be glad to help you with any questions if something is unclear
in the paper.

>From my quick peek into Impala (https://github.com/cloudera/impala) it
seems they also use C/C++ back-end and also codegen with LLVM IR for Hive
queries so may be look there for inspiration, may be even beyond
inspiration ;)  the license is Apache... Cloudera are good guys,
contributing a lot into Apache, supporting open-source, Doug is an Apache
director so I guess we are safe here. Look into "Cloudera Impala" thread in
this mailing list for some more discussion about Impala. Apache Drill has a
slightly different goals but code reuse where it make sense is good I guess.

And if you would want to help with the executor/storage engine itself you
may consider contributing to ZeroVM, we just prepared a new version with
easier installation: http://zerovm.org/download/ and stay tuned for private
beta of hosted version. ZeroVM is also Apache licensed and Swift which we
use as storage engine is also Apache licensed.

On Mon, Nov 12, 2012 at 7:23 PM, Vladimir Starostenkov <
vladimir.starostenkov@gmail.com> wrote:

> Hello!
> On Jason's slides I saw "C/C++ core with Java support". Are there any more
> architecture details? I've already read the "Apache Drill Plan Syntax", but
> as I see it's about the stuff you are working on right now in Java.
> What about Storage Engine? DRILL-13? Where to help with C++ expertise?

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