Re: timeout implementation issues - Mailing list pgsql-hackers

From Hiroshi Inoue
Subject Re: timeout implementation issues
Date
Msg-id EKEJJICOHDIEMGPNIFIJMEKKHGAA.Inoue@tpf.co.jp
Whole thread Raw
In response to Re: timeout implementation issues  (Bruce Momjian <pgman@candle.pha.pa.us>)
Responses Re: timeout implementation issues  (Bruce Momjian <pgman@candle.pha.pa.us>)
List pgsql-hackers
> -----Original Message-----
> From: Bruce Momjian [mailto:pgman@candle.pha.pa.us]
> 
> Hiroshi Inoue wrote:
> > Bruce Momjian wrote:
> > > 
> > > > > > Sorry I couldn't understand your point.
> > > > > > It seems the simplest and the most certain way is to call
> > > > > > 'SET QUERY_TIMEOUT per query. The way dosen't require
> > > > > > RESET at all.  Is the overhead an issue ?
> > > > >
> > > > > What about psql and libpq.  Doing a timeout before every 
> query is a
> > > > > pain.
> > > >
> > > > Psql and libpq would simply issue the query according to the
> > > > user's request as they currently do. What's pain with it ?
> > > 
> > > If they wanted to place a timeout on all queries in a session, they
> > > would need a SET for every query, which seems like a pain.
> > 
> > Oh I see. You mean users' pain ?
> 
> Sorry I was unclear.
> 
> > If a user wants to place a timeout on all the query, he
> > would issue SET query_timeout command only once.
> 
> I am confused.  Above you state you want SET QUERY_TIMEOUT to be
> per-query. I assume you mean that the timeout applies for only the next
> query and is turned off after that.

Hmm there seems a misunderstanding between you and I but I
don't see what it is. Does *SET QUERY_TIMEOUT* start a timer in
your scenario ?  In my scenario *SET QUERY_TIMEOUT* only
registers the timeout value for subsequent queries.

regards,
Hiroshi inoue



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