| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> |
| Cc: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Gregory Stark <stark(at)enterprisedb(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | toast by chunk-end (was Re: PG_PAGE_LAYOUT_VERSION 5 - time for change) |
| Date: | 2008-11-17 21:10:21 |
| Message-ID: | 20081117211021.GN4291@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Zdenek Kotala wrote:
> Alvaro Herrera napsal(a):
>> Heikki Linnakangas wrote:
>>
>>> Hmm, you're right. I think it can be made to work by storing the
>>> *end* offset of each chunk. To find the chunk containing offset X,
>>> search for the first chunk with end_offset > X.
>>
>> FWIW I'm trying to do this. So far I've managed to make the basic thing
>> work, and I'm about to have a look at the slice interface.
Okay, so this seems to work. It's missing writing the sanity checks on
the returned data, and a look at the SGML docs to see if anything needs
updating. I'm also going to recheck code comments that may need
updates.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
| Attachment | Content-Type | Size |
|---|---|---|
| toast-chunkend.patch | text/x-diff | 14.5 KB |
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