Re: [PATCHES] Reduce heap tuple header size

From: Manfred Koizar <mkoi-pg(at)aon(dot)at>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Curt Sampson <cjs(at)cynic(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: [PATCHES] Reduce heap tuple header size
Date: 2002-07-01 15:35:54
Message-ID: 7vr0iu4ql04lsi8d04l4vegvv552s9o2t2@4ax.com
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On Mon, 1 Jul 2002 10:15:42 -0400 (EDT), Bruce Momjian
<pgman(at)candle(dot)pha(dot)pa(dot)us> wrote:
>OK, I have heard enough votes to add this.

In a second version of this patch posted on 2002-06-26 you can control
the tuple format by #define/#undef PG72FORMAT. While there have been
voices saying that exposing this choice to the user via
configure --enable-pg72format
is not a good idea [well, it was one voice and the idea was called
"really, really bad" ;-) but the argument is still valid], I wonder
whether we shouldn't apply this second version (without the configure
parts) and put all forthcoming format changes under #ifndef
PG72FORMAT.

This way you can decide to go back to v7.2 format immediately before
going beta, if the changes are too hot to handle. And I think if I
wouldn't volunteer to cleanup the #ifdef PG72FORMAT stuff after the
new format has been accepted, I would be nominated to do it ...

Servus
Manfred

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