| From: | Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> |
|---|---|
| To: | Markus Wanner <markus(at)bluegap(dot)ch> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: New Page API |
| Date: | 2008-08-12 09:38:16 |
| Message-ID: | 48A15A08.5070306@sun.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Markus Wanner napsal(a):
> Hi,
>
> Zdenek Kotala wrote:
>> I finished first prototype of new page API.
>
> This might seem obvious to you, but could you please describe the
> problem you are trying to solve with this new page API? How does it
> relate to the relation forks, that have just been committed?
>
Hi Markus,
It is not related to fork maps. The idea is to learn PostgreSQL process to read
old data page structures. It is part of in-place upgrade and it was discussed on
PGCon this year. You can see more info on
http://wiki.postgresql.org/wiki/In-place_upgrade
http://www.pgcon.org/2008/schedule/events/87.en.html
This is prototype of first part. Multi versions tuple processing and tuple size
limits are next part.
Zdenek
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