On Wed, Dec 17, 2008 at 7:11 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
>
> I think what you are suggesting is that we should set the visibility map
> bit while dead line pointers (tombstones) still remain. If that's what
> you meant it's a bad idea.
No, I'm not suggesting that. I understand the problem there. I was
merely explaining how HOT-prune may some time (when there are no DEAD
line pointers created) help us set the visibility bit early.
OTOH I think we can still set PD_ALL_VISIBLE page header flag even
when there are DEAD line pointers.
Thanks,
Pavan
--
Pavan Deolasee
EnterpriseDB http://www.enterprisedb.com
