Re: WIP: New Page API

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