| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andreas Pflug <pgadmin(at)pse-consulting(dot)de>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: pg_relation_size locking |
| Date: | 2005-12-12 16:05:52 |
| Message-ID: | 20051212160552.GA22135@surnet.cl |
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| Thread: | |
| Lists: | pgsql-hackers |
Tom Lane wrote:
> In the above example, the contrib code would have not done the right
> thing at all --- if I'm not mistaken, it would have kept handing back
> the size of the original, pre-TRUNCATE file, since the new pg_class
> row with the new relfilenode isn't committed yet. So it wouldn't have
> done what you wish anyway.
It wouldn't have worked anyway because it used the Oid to search the
file, not the relfilenode.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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