| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | Jim Nasby <jim(at)nasby(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Refactoring log_newpage |
| Date: | 2012-02-02 09:35:44 |
| Message-ID: | CA+U5nMJXw_iTubW=LQyS6roQOUmhVvv2B6zDGVWZsXDnHKNkfA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Feb 2, 2012 at 7:26 AM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> Well, you can obviously check the catalogs for that, but you must be
> assuming that you don't have access to the catalogs or this would be a
> non-issue.
>
> You can also identify the kind of page by looking at the special area of the
> stored page. See:
> http://archives.postgresql.org/pgsql-hackers/2007-04/msg00392.php
How does that work with different forks?
I think its very ugly to mark all sorts of different pages as if they
were heap pages when they clearly aren't. I don't recall anything so
ugly being allowed anywhere else in the system. Why is it *needed*
here?
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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