Re: 64-bit CommandIds

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Zoltan Boszormenyi <zb(at)cybertec(dot)at>
Cc: pgsql-patches <pgsql-patches(at)postgresql(dot)org>, Hans-Juergen Schoenig <hs(at)cybertec(dot)at>
Subject: Re: 64-bit CommandIds
Date: 2008-03-04 17:41:10
Message-ID: 20080304174110.GK4755@alvh.no-ip.org
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Zoltan Boszormenyi wrote:

> attached is our patch against HEAD which enables extending CommandIds
> to 64-bit. This is for enabling long transactions that really do that much
> non-read-only work in one transaction.

I think you should add a pg_control field and corresponding check, to
avoid a 64bit-Cid postmaster to start on a 32bit-Cid data area and vice
versa.

--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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