| From: | "Pavan Deolasee" <pavan(dot)deolasee(at)gmail(dot)com> |
|---|---|
| To: | "Gregory Stark" <stark(at)enterprisedb(dot)com> |
| Cc: | "Bruce Momjian" <bruce(at)momjian(dot)us>, "Heikki Linnakangas" <heikki(at)enterprisedb(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Florian Pflug" <fgp(dot)phlo(dot)org(at)gmail(dot)com>, "Simon Riggs" <simon(at)2ndquadrant(dot)com>, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: HOT patch - version 15 |
| Date: | 2007-09-11 12:17:01 |
| Message-ID: | 2e78013d0709110517o4fb784e2u2c0ccb985b9f11d7@mail.gmail.com |
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| Lists: | pgsql-patches |
On 9/11/07, Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com> wrote:
>
>
> - Track the minimum xmin in the page header to avoid repeated
> (wasted) attempts to prune a Prunable page in the presence of long running
> transactions.
>
>
I would actually think twice before even doing this because this would lead
to
complete change in heap page structure and stop people from upgrading
to 8.3 without a complete dump/restore. I don't remember 8.3 introduces any
other
significant change which already enforces that.
Thanks,
Pavan
--
Pavan Deolasee
EnterpriseDB http://www.enterprisedb.com
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