From: | David Fetter <david(at)fetter(dot)org> |
---|---|
To: | Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> |
Cc: | PostgreSQL-Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: ALTER EXTENSION UPGRADE patch v1 |
Date: | 2011-01-05 15:42:08 |
Message-ID: | 20110105154208.GF7308@fetter.org |
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Lists: | pgsql-hackers |
On Wed, Jan 05, 2011 at 10:19:23AM +0100, Dimitri Fontaine wrote:
> David Fetter <david(at)fetter(dot)org> writes:
> > One could imagine that an extension was updated more quickly than
> > PostgreSQL major versions come out, or at least not at the exact same
> > time.
>
> Sure, but I don't see what your proposed syntax is giving us here.
The syntax by itself does nothing, but the underlying capability gives
users:
- The ability to have versions of software on different databases on
the same system.
- The ability to do deterministic upgrades, rather than just, "upgrade
me to the latest, which may be buggy and/or slow things down to
avoid a problem I know I don't have."
> Currently the new version you're upgraded to is the one installed on
> the file system, and whose .so has already been upgraded, and that's
> it.
>
> I still need a better grasp at what your proposal is about to
> comment and integrate, I fear.
I am not saying that this is a show-stopper. I *am* saying that
multiple concurrent versions and deterministic upgrades are common
enough requests that you shouldn't do things that would prevent those
in the future.
Cheers,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
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