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From AnilKumar B <akumarb2...@gmail.com>
Subject Re: Digging into query planning and joins in Drill
Date Fri, 22 May 2015 14:33:56 GMT
Nice. Really helpful.
Thanks for sharing Hao.

Thanks & Regards,
B Anil Kumar.

On Fri, May 22, 2015 at 11:22 AM, Hao Zhu <hzhu@maprtech.com> wrote:

> Hi Team,
>
> Sharing 2 research articles:
> 1. Drill Workshop -- Control Query Parallelization
> <http://www.openkb.info/2015/05/drill-workshop-control-query.html>
>
> This article explains the meaning of planner.slice_target,
> planner.width.max_per_node, planner.width.max_per_query by examples, and
> show how to control the basic query parallelization.
>
> 2. Drill Workshop -- Understanding Joins
> <http://www.openkb.info/2015/05/drill-workshop-understanding-joins.html>
>
> This article digs into broadcast&distributed joins, explains the meaning
> of planner.broadcast_factor,planner.broadcast_threshold per Drill source
> code,
> and also show you how to control the parallelism of each join type.
>
> Thanks,
> Hao
>

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