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Date: Fri, 17 Jun 2016 17:51:54 -0400
From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-documentation <pgsql-docs@postgresql.org>
Subject: Re: Pg_upgrade and collation
Message-ID: <20160617215154.GA140481@alvherre.pgsql>
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Bruce Momjian wrote:
> The attached patch documents that pg_upgrade requires old/new servers to
> use compatibile collation library versions as well.

I think this is way too thin to be helpful:

> --- 61,68 ----
>     checking for compatible compile-time settings, including 32/64-bit
>     binaries.  It is important that
>     any external modules are also binary compatible, though this cannot
> !   be checked by <application>pg_upgrade</>.  Compatible collation
> !   library versions must also be used.
>    </para>

I think it would be useful to indicate what to do if they are not
compatible.

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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