| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: CustomScan and readfuncs.c |
| Date: | 2015-07-29 20:29:10 |
| Message-ID: | CA+Tgmob7C-w2b9thditZ-g9=WMRKww81GSir5nDX1ya2AqFpgA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Jul 26, 2015 at 11:14 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Um ... wait a second. There is no support in readfuncs for any
> plan node type, and never has been, and I seriously doubt that there
> ever should be.
As KaiGai says, the parallel query stuff contemplates changing this;
how else will we get the plan from the master to each worker? We
could invent a bespoke serialization format, but that seems to have
exactly nothing to recommend it.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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