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From: Laurenz Albe <[email protected]>
To: Daniel Gustafsson <[email protected]>
To: Michael Banck <[email protected]>
Cc: Bruce Momjian <[email protected]>
Cc: Nathan Bossart <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: Reports on obsolete Postgres versions
Date: Wed, 13 Mar 2024 20:04:59 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<20240311211204.GA1786481@nathanxps13>
	<[email protected]>
	<[email protected]>
	<[email protected]>

On Tue, 2024-03-12 at 11:56 +0100, Daniel Gustafsson wrote:
> > I liked the statement from Laurenz a while ago on his blog
> > (paraphrased): "Upgrading to the latest patch release does not require
> > application testing or recertification". I am not sure we want to put
> > that into the official page (or maybe tone down/qualify it a bit), but I
> > think a lot of users stay on older minor versions because they dread
> > their internal testing policies.
> 
> I think we need a more conservative language since a minor release might fix a
> planner bug that someone's app relied on and their plans will be worse after
> upgrading.  While rare, it can for sure happen so the official wording should
> probably avoid such bold claims.

I think we are pretty conservative with backpatching changes to the
optimizer that could destabilize existing plans.

I feel quite strongly that we should not use overly conservative language
there.  If people feel that they have to test their applications for new
minor releases, the only effect will be that they won't install minor releases.
Installing a minor release should be as routine as the operating system
patches that many companies apply automatically during weekend maintenance
windows.  They can also introduce bugs, and everybody knows and accepts that.

Yours,
Laurenz Albe

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