| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, Greg S <stark(at)mit(dot)edu>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Freeze avoidance of very large table. |
| Date: | 2016-02-16 18:57:01 |
| Message-ID: | 20160216185701.GA779555@alvherre.pgsql |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Masahiko Sawada wrote:
> On Wed, Feb 17, 2016 at 12:02 AM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > On Tue, Feb 16, 2016 at 11:56:25PM +0900, Masahiko Sawada wrote:
> >> > I agreed on ripping out the converter plugin ability of pg_upgrade.
> >> > Remember pg_upgrade was originally written by EnterpriseDB staff, and I
> >> > think they expected their closed-source fork of Postgres might need a
> >> > custom page converter someday, but it never needed one, and at this
> >> > point I think having the code in there is just making things more
> >> > complex. I see _no_ reason for community Postgres to use a plugin
> >> > converter because we are going to need that code for every upgrade from
> >> > pre-9.6 to 9.6+, so why not just hard-code in the functions we need. We
> >> > can remove it once 9.5 is end-of-life.
> >> >
> >>
> >> Hm, we should rather remove the source code around PAGE_CONVERSION and
> >> page.c at 9.6?
> >
> > Yes. I can do it if you wish.
>
> I see. I understand that page-converter code would be useful for some
> future cases, but makes thing more complex.
If we're not going to use it, let's get rid of it right away. There's
no point in having a feature that adds complexity just because we might
find some hypothetical use of it in a not-yet-imagined future.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Bruce Momjian | 2016-02-16 19:08:02 | Re: Freeze avoidance of very large table. |
| Previous Message | Bruce Momjian | 2016-02-16 17:42:47 | Re: Doubt in 9.5 release note |