On Tue, 2007-09-11 at 01:22 +0530, Pavan Deolasee wrote:

> I think the only difference is that the quick pruning does not mark
> intermediate tuples ~LP_USED and hence we may avoid WAL logging.

Sounds great.

> Btw, I am not too enthusiastic about quick pruning because it leaves 
> behind dead heap-only tuples which are not reachable from any root
> heap tuples. Not that we can't handle them, but I am worried about
> making such changes right now unless we are sure about the benefits.
> We can always tune and tweak in 8.4

...but we don't want to reach them. They are waiting to be removed.

  Simon Riggs
  2ndQuadrant  http://www.2ndQuadrant.com

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