Re: HOT - preliminary results

Simon Riggs wrote:
> On Thu, 2007-03-01 at 22:35 +0530, Pavan Deolasee wrote:
> > Merlin Moncure wrote:
> > > On 3/1/07, Pavan Deolasee <pavan(dot)deolasee(at)enterprisedb(dot)com> wrote:
> > >>
> > > seems pretty solid except for one possible problem...at one point when
> > > I dropped then later added the index on 'abalance', I got spammed
> > > 'WARNING: found a HOT-updated tuple' from psql prompt.
> >
> > Thats intentional. We don't yet support CREATE INDEX on a HOT-updated
> > table. This is one of the major unfinished TODO items before we can
> > consider patch feature complete. I have left the warning to catch
> > this case till then.
>
> CREATE INDEX and VACUUM FULL will require changes. Proposals for VACUUM
> FULL have been posted, CREATE INDEX should be there tomorrow.
>
> CLUSTER does not need changes for HOT, as things stand currently, mainly
> because its MVCC behaviour is broken.
------------------------

That's oddly discouraging. :-)

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com

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