| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Paquier <michael(at)paquier(dot)xyz>, Anastasia Lubennikova <lubennikovaav(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: A test for replay of regression tests |
| Date: | 2022-03-25 04:26:46 |
| Message-ID: | CAH2-WznxZDjHaxYk2u_wpJysQGBLiVxCa550Ja7xxHm-+eTVNw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Mar 24, 2022 at 9:16 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> > VACUUM FREEZE (without DISABLE_PAGE_SKIPPING) seems like it would do
> > everything you want, without using a temp table. At least on the
> > master branch.
>
> We tried that in a prior case:
> https://postgr.es/m/20220120052404.sonrhq3f3qgplpzj%40alap3.anarazel.de
Oh, yeah. If some other backend is holding back OldestXmin, and you
can't find a way of dealing with that, then you'll need a temp table.
(Mind you, that trick only works on recent versions too.)
--
Peter Geoghegan
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