On Thu, 2010-01-07 at 15:01 -0600, Kevin Grittner wrote:
> As I understand it, Greg's line of thinking is that we should use a
> technique which has never proven practical on a large scale:
> matching database changes against a list of predicate lock
> expressions. It's not that I want to do it any particular way, it's
> that I want to get it working in the simplest possible way and then
> find things which can be shown to improve overall performance of
> meaningful work loads until we have something which has acceptable
> performance. I don't reject "pure" predicate tracking, per se -- I
> just won't put any time into it, since I don't expect it to work. I
> would be overjoyed if Greg or anybody else could prove that wrong
> with an optimization patch, say six to twelve months from now when
> we hit that phase.
I think we are in agreement. I was responding to Robert Haas's comment,
because it sounded like he didn't understand Greg Stark's point.
Regards,
Jeff Davis
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