Re: HOT patch - version 15

Alvaro Herrera wrote:
> Heikki Linnakangas escribió:
>
>> Hmm. I wonder if we could prune/defragment in bgwriter?
>
> That would be best, if at all possible.  You can prune without accessing
> anything outside the page itself, right?

Yes, though you do need to have an oldest xmin to determine which tuples
are dead, and the removed tuples need to be WAL-logged.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com