| From: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Jeff Davis <pgsql(at)j-davis(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, Fabrízio Mello <fabriziomello(at)gmail(dot)com>, Thom Brown <thom(at)linux(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Parallel Seq Scan |
| Date: | 2015-07-01 06:46:05 |
| Message-ID: | 55938CAD.4040802@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
On 2015-07-01 PM 02:37, Amit Kapila wrote:
>
> In terms of completeness, I think we should add some documentation
> for this patch, one way is to update about the execution mechanism in
> src/backend/access/transam/README.parallel and then explain about
> new configuration knobs in documentation (.sgml files). Also we
> can have a separate page in itself in documentation under Server
> Programming Section (Parallel Query -> Parallel Scan;
> Parallel Scan Examples; ...)
>
> Another thing to think about this patch at this stage do we need to
> breakup this patch and if yes, how to break it up into multiple patches,
> so that it can be easier to complete the review. I could see that it
> can be splitted into 2 or 3 patches.
> a. Infrastructure for parallel execution, like some of the stuff in
> execparallel.c, heapam.c,tqueue.c, etc and all other generic
> (non-nodes specific) code.
> b. Nodes (Funnel and PartialSeqScan) specific code for optimiser
> and executor.
> c. Documentation
>
> Suggestions?
A src/backend/executor/README.parallel?
Thanks,
Amit
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