Re: pg_upgrade 9.4 -> 9.5 with pg_trgm fails for me

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: pg_upgrade 9.4 -> 9.5 with pg_trgm fails for me
Date: 2016-01-08 21:26:25
Message-ID: 24792.1452288385@sss.pgh.pa.us
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Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net> writes:
> On Fri, Jan 08, 2016 at 04:03:51PM -0500, Tom Lane wrote:
>> BTW, the one-liner fix that I'd had in mind when I wrote that does indeed
>> fix this particular problem, but after studying the code I realized that
>> there's a whole bunch of related problems; for instance I believe
>> pg_upgrade would lose domain constraints on a domain type that's in an
>> extension installed into pg_catalog :-(.

> Does this warrant adding a few words to the documentation
> warning against installing extensions into pg_catalog. ?

No, it's just a bug. Although apparently not many people do that, or
we'd have heard complaints before.

regards, tom lane

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