| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Florian Pflug <fgp(at)phlo(dot)org> |
| Cc: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Hannu Krosing <hannu(at)2ndquadrant(dot)com>, MauMau <maumau307(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kevin Grittner <kgrittn(at)ymail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Rajeev rastogi <rajeev(dot)rastogi(at)huawei(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Standalone synchronous master |
| Date: | 2014-01-11 17:53:28 |
| Message-ID: | 20140111175328.GD13568@awork2.anarazel.de |
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| Lists: | pgsql-hackers |
On 2014-01-11 18:28:31 +0100, Florian Pflug wrote:
> Hm, I was about to suggest that you can set statement_timeout before
> doing COMMIT to limit the amount of time you want to wait for the
> standby to respond. Interestingly, however, that doesn't seem to work,
> which is weird, since AFAICS statement_timeout simply generates a
> query cancel requester after the timeout has elapsed, and cancelling
> the COMMIT with Ctrl-C in psql *does* work.
I think that'd be a pretty bad API since you won't know whether the
commit failed or succeeded but replication timed out. There very well
might have been longrunning constraint triggers or such taking a long
time.
So it really would need a separate GUC.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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