| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Dimitri Fontaine <dfontaine(at)hi-media(dot)com>, pgsql-admin(at)postgresql(dot)org, Chris Hoover <revoohc(at)gmail(dot)com> |
| Subject: | Re: Where to find information on the new HOT tables? |
| Date: | 2008-02-08 16:30:48 |
| Message-ID: | 20080208163048.GE31022@alvh.no-ip.org |
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| Thread: | |
| Lists: | pgsql-admin |
Bruce Momjian escribió:
> The release note item says we can now reclaim without vacuum:
>
> "UPDATE"s and "DELETE"s leave dead tuples behind, as do failed
> "INSERT"s. Previously only "VACUUM" could reclaim
> space taken by dead tuples. With HOT dead tuple space can be
> automatically reclaimed at the time of "INSERT" or ...
>
> so it seems logical that the need to vacuum would change. We can add
> an explicit sentence about that to the release notes.
Ok, but the problem is not only realizing that you need to change it;
you also need to know what to.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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