| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Gavin Flower <GavinFlower(at)archidevsys(dot)co(dot)nz>, Jeff Davis <pgsql(at)j-davis(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, 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: | 2015-09-03 10:21:22 |
| Message-ID: | CAA4eK1J6SqOEAkxidoxp7kqx2_D-XNspx4rq4AO17P+SqKygFw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Jul 23, 2015 at 7:43 PM, Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com> wrote:
>
> Hi Amit,
>
> The latest v16 patch cannot be applied to the latest
> master as is.
> 434873806a9b1c0edd53c2a9df7c93a8ba021147 changed various
> lines in heapam.c, so it probably conflicts with this.
>
Attached, find the rebased version of patch. It fixes the comments raised
by Jeff Davis and Antonin Houska. The main changes in this version are
now it supports sync scan along with parallel sequential scan (refer
heapam.c)
and the patch has been split into two parts, first contains the code for
Funnel node and infrastructure to support the same and second contains
the code for PartialSeqScan node and its infrastructure.
Note - To test the patch, you need to first apply the assess-parallel-safety
patch [1] and then apply parallel_seqscan_funnel_v17.patch attached with
this mail and then apply parallel_seqscan_partialseqscan_v17.patch attached
with this mail.
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
| Attachment | Content-Type | Size |
|---|---|---|
| parallel_seqscan_funnel_v17.patch | application/octet-stream | 118.8 KB |
| parallel_seqscan_partialseqscan_v17.patch | application/octet-stream | 52.3 KB |
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