Alvaro Herrera wrote:
> Pruning is going to take place on next vacuum anyway, isn't it?
> AFAIUI the point is that you can't do cleanup selectively only on UPDATE
> because of pointers that your process may already have to the page,
> which is why you wanted to do it on every heap_fetch.  I suggest it is
> optimization which can be left for a later version (8.4?)

Wait, did you mean that we don't do pruning at all in 8.3? That's a bad
idea, the main purpose of HOT is to be able to vacuum page at a time,
reducing the need to do regular vacuums.

  Heikki Linnakangas

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