| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Zdenek Kotala <Zdenek(dot)Kotala(at)sun(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: visibility maps |
| Date: | 2009-01-20 16:55:58 |
| Message-ID: | 200901201655.n0KGtwm19279@momjian.us |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> "Pavan Deolasee" <pavan(dot)deolasee(at)gmail(dot)com> writes:
> > OTOH I think we can still set PD_ALL_VISIBLE page header flag even
> > when there are DEAD line pointers.
>
> That would mean the header flag means something different than the
> map bit does, which would mean extra tests need to be made before
> propagating the flag bit to the map. This is doable, no doubt,
> but it seems pretty error-prone ...
Are there any open items from this discussion?
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
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