Re: WIP: pre-upgrade page reservation

From: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
To: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: WIP: pre-upgrade page reservation
Date: 2008-12-17 07:54:46
Message-ID: 4948B046.8020504@enterprisedb.com
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Zdenek Kotala wrote:
> BTree space reservation is more complicated.

Do you need to pre-reserve the space for b-tree? I think you can just
split it at upgrade, in the new version. The problem with doing that for
heaps is that to move a heap tuple you need to update the index
pointers, but for indexes there's no such restriction.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com

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