Re: [Discussion] Code generation in carbon result preparation

Posted by kumarvishal09 on Oct 12, 2016; 5:02pm
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/Discussion-Code-generation-in-carbon-result-preparation-tp1792p1818.html

Hi Jacky,
Yes result preparation in exeutor side.

-Regards
Kumar Vishal

On Wed, Oct 12, 2016 at 9:33 PM, Jacky Li <[hidden email]> wrote:

> Hi Vishal,
>
> Which part of the preparation are you considering? The column stitching in
> the executor side?
>
> Regards,
> Jacky
>
> > 在 2016年10月12日，下午9:24，Kumar Vishal <[hidden email]> 写道：
> >
> > Hi All,
> > Currently we are preparing the final result row wise, as number of
> columns
> > present in project list(80 columns) is high mainly measure column or no
> > dictionary column there are lots of cpu cache invalidation is happening
> and
> > this is resulting to slower the query performance.
> >
> > *I can think of two solutions for this problem.*
> > *Solution 1*. Fill column data vertically, currently it is
> horizontally(It
> > may not solve all the problem)
> > *Solution 2*. Use code generation for result preparation.
> >
> > This is an initially idea.
> >
> > -Regards
> > Kumar Vishal
>
>
>
>