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From: Justin Pryzby <pryzby@telsasoft.com>
To: Andrey Borodin <x4mmm@yandex-team.ru>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: Petr Vejsada <pve@paymorrow.com>
Cc: pgsql-hackers@lists.postgresql.org
Subject: Re: pg_upgrade (12->14) fails on aggregate
Date: Wed, 29 Jun 2022 13:07:14 -0500
Message-ID: <20220629180714.GN28130@telsasoft.com> (raw)
In-Reply-To: <1CA595D8-49DA-4DAD-94A5-43A9AB97E911@yandex-team.ru>
References: <540147.1655321524@sss.pgh.pa.us>
	<20220617020103.GG29853@telsasoft.com>
	<CA+Tgmob=sKD=Ag3TXQ+b7wWiJaoYaV-AgEddQYCxMNMCqmz=bA@mail.gmail.com>
	<1216673.1655475253@sss.pgh.pa.us>
	<20220622235845.GV22452@telsasoft.com>
	<33211367-6CAF-4B09-AA0E-020C62FAD8EF@yandex-team.ru>
	<20220624202824.GF22452@telsasoft.com>
	<AF678A5C-6ED7-4144-B264-68FEF31ED3A8@yandex-team.ru>
	<20220627233003.GE19662@telsasoft.com>
	<1CA595D8-49DA-4DAD-94A5-43A9AB97E911@yandex-team.ru>

On Wed, Jun 29, 2022 at 10:58:44PM +0500, Andrey Borodin wrote:
> > On 28 Jun 2022, at 04:30, Justin Pryzby <pryzby@telsasoft.com> wrote:
> > 
> > Nope, it's as I said: this would break pg_upgrade from older versions.
> 
> As far as I understand 9.5 is not supported. Probably, it makes sense to keep pg_upgrade running against 9.5 clusters, but I'm not sure if we do this routinely.

As of last year, there's a reasonably clear policy for support of old versions:

https://www.postgresql.org/docs/devel/pgupgrade.html
|pg_upgrade supports upgrades from 9.2.X and later to the current major release of PostgreSQL, including snapshot and beta releases.

See: e469f0aaf3c586c8390bd65923f97d4b1683cd9f

-- 
Justin





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