| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, Markus Wanner <markus(at)bluegap(dot)ch>, Dimitri Fontaine <dfontaine(at)hi-media(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: standby registration (was: is sync rep stalled?) |
| Date: | 2010-10-05 12:57:35 |
| Message-ID: | AANLkTi=Z_W3X--5SVacWKkfFL1dH5Y3W0DL1WWtVNkDR@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Oct 5, 2010 at 8:34 AM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> On Mon, 2010-10-04 at 12:45 -0700, Josh Berkus wrote:
>> >>> Quorum commit, even with configurable vote weights, can't handle a
>> >>> requirement that a particular commit be replicated to (A || B) && (C
>> >>> || D).
>> >> Good point.
>
> Asking for quorum_commit = 3 would cover that requirement.
>
> Not exactly as requested, but in a way that is both simpler to express
> and requires no changes to configuration after failover. ISTM better to
> have a single parameter than 5 separate configuration files, with
> behaviour that the community would not easily be able to validate.
That's just not the same thing.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company
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