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Re: Hot Standy introduced problem with query cancel behavior

From: Andres Freund <andres(at)anarazel(dot)de>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Joachim Wieland <joe(at)mcknight(dot)de>, Kris Jurka <books(at)ejurka(dot)com>
Subject: Re: Hot Standy introduced problem with query cancel behavior
Date: 2010-01-15 00:08:41
Message-ID: 201001150108.41631.andres@anarazel.de (view raw or flat)
Thread:
Lists: pgsql-hackers
On Wednesday 13 January 2010 00:07:53 Simon Riggs wrote:
> On Tue, 2010-01-12 at 19:43 +0100, Andres Freund wrote:
> > On Tuesday 12 January 2010 09:40:03 Simon Riggs wrote:
> > > On Tue, 2010-01-12 at 06:30 +0100, Andres Freund wrote:
> > > > Currently the patch does not yet do anything to avoid letting the
> > > > protocol out of sync. What do you think about adding a flag for error
> > > > codes not to communicate with the client (Similarly to COMERROR)?
> > > > 
> > > > So that one could do an elog(ERROR & ERROR_NO_SEND_CLIENT, .. or
> > > > such?
> > > 
> > > Seems fairly important piece.
> > 
> > Do you aggree on the approach then? Do you want to do it?
> 
> If you would like to prototype something on this issue it would be
> gratefully received. I will review when submitted, though I may need
> other review also.
Will do - likely not before Saturday though.

> I'm still reworking other code, so things might change under you, though
> not deliberately so. I will post as soon as I can, which isn't yet.
No problem. Readapting a relatively minor amount of code isnt that hard.

Andres

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