| From: | "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> |
|---|---|
| To: | "Simon Riggs" <simon(at)2ndQuadrant(dot)com>, "Robert Haas" <robertmhaas(at)gmail(dot)com> |
| Cc: | "Josh Berkus" <josh(at)agliodbs(dot)com>, "Markus Wanner" <markus(at)bluegap(dot)ch>, "Heikki Linnakangas" <heikki(dot)linnakangas(at)enterprisedb(dot)com>, "Fujii Masao" <masao(dot)fujii(at)gmail(dot)com>, "Dimitri Fontaine" <dfontaine(at)hi-media(dot)com>, <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: standby registration (was: is sync rep stalled?) |
| Date: | 2010-10-05 14:07:08 |
| Message-ID: | 4CAAEABC0200002500036504@gw.wicourts.gov |
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| Lists: | pgsql-hackers |
Simon Riggs <simon(at)2ndQuadrant(dot)com> wrote:
> Robert Haas wrote:
>> Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
>>> 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,
>> That's just not the same thing.
>
> In what important ways does it differ?
When you have one server functioning at each site you'll block until
you get a third machine back, rather than replicating to both sites
and remaining functional.
-Kevin
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