Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions

From: Stephen Frost <sfrost(at)snowman(dot)net>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, David Fetter <david(at)fetter(dot)org>, Ian Barwick <ian(dot)barwick(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions
Date: 2019-08-05 17:34:39
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* Andres Freund (andres(at)anarazel(dot)de) wrote:
> On 2019-08-05 12:43:24 -0400, Tom Lane wrote:
> > On the other hand, people have also opined that they want full error
> > checking on the inserted values, and that seems out of reach with less
> > than a full running system (mumble extensions mumble).
> I think the error checking ought to be about as complete as the one we
> do during a normal postmaster startup. Afaict that requires loading
> shared_preload_library extensions, but does *not* require booting up far
> enough to run GUC checks in a context with database access.

I'm not following this thread of the discussion.

You're not suggesting that pg_basebackup perform this error checking
after it modifies the file, are you..?

Where are you thinking this error checking would be happening?



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