Re: timeout implementation issues

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Jessica Perry Hekman <jphekman(at)dynamicdiagrams(dot)com>, Jan Wieck <janwieck(at)yahoo(dot)com>, Barry Lind <barry(at)xythos(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: timeout implementation issues
Date: 2002-04-08 03:17:45
Message-ID: 200204080317.g383Hj511314@candle.pha.pa.us
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Hiroshi Inoue wrote:
> Bruce Momjian wrote:
> >
> > > > I guess it's a matter of definition: Do you consider SET variables
> > > > database state or session metadata? I think some are this and some are
> > > > that. I'm not sure how to draw the line, but throwing everything from one
> > > > category into the other isn't my favorite solution.
> > >
> > > You seem to be suggesting that we should make a variable-by-variable
> > > decision about whether SET variables roll back on ABORT or not. I think
> > > that way madness lies; we could spend forever debating which vars are
> > > which, and then who will remember without consulting the documentation?
> > >
> > > I feel we should just do it. Yeah, there might be some corner cases
> > > where it's not the ideal behavior; but you haven't convinced me that
> > > there are more cases where it's bad than where it's good. You sure
> > > haven't convinced me that it's worth making SET's behavior
> > > nigh-unpredictable-without-a-manual, which is what per-variable behavior
> > > would be.
> >
> > I am with Tom on this one. (Nice to see he is now arguing on my side.)
>
> I vote against you. If a variable is local to the session, you
> can change it as you like without bothering any other user(session).
> Automatic resetting of the varibales is rather confusing to me.

I don't see how this relates to other users. All SET commands that can
be changed in psql are per backend, as far as I remember.

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