Re: pg_avd

From: "Matthew T(dot) O'Connor" <matthew(at)zeut(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>,Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>,Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>,Patches <pgsql-patches(at)postgresql(dot)org>
Subject: Re: pg_avd
Date: 2003-02-19 16:06:30
Message-ID: 1045670790.13438.95.camel@zeutrh80
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On Wed, 2003-02-19 at 10:11, Tom Lane wrote:
> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> > Matthew T. O'Connor writes:
> >> I think it's a question of, is this solution one that we want to keep
> >> for a while, or do we want a different implementation of AVD, perhaps
> >> something built into the backend that could take advantage of the FSM
> >> also.
> > To me it seems that this would be much better if kept inside the server.
> I agree, it seems like a server-side implementation would be the only
> credible way to go for a production-grade version of this feature.
> But I don't see anything wrong with building a client-side prototype,
> which is what pg_avd looks like from here. (Unless the client is
> contorted by not being able to get at things it needs.)

I don't think pg_avd is contorted, but it is limited to the data
published by the stats system, so there is no FSM etc...

I also think it would probably be better in the backend, I just wasn't
sure if the additional complexity was worth it. The primary advantage
of a client side implementation is simplicity.

That said, I originally tried to do this in the backend, but found the
task too daunting for me and gave up. When Shridhar started some work
on a client side version I decided to run with that and see how far I
could get.

Question: Should I keep working on pg_avd for contrib inclusion in 7.4,
or should I try again on a backend implementation that might be less
likely to get into 7.4?

In response to


  • Re: pg_avd at 2003-02-19 21:37:50 from Bruce Momjian

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