From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
---|---|
To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
Cc: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Andres Freund <andres(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org, Robert Haas <robertmhaas(at)gmail(dot)com>, Daniel Farina <daniel(at)heroku(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Subject: | Re: [PATCH 10/16] Introduce the concept that wal has a 'origin' node |
Date: | 2012-06-20 19:24:58 |
Message-ID: | CA+U5nM+dm_K6bCXsM5B1K4mhuHM30j8N=07SVaP4vr2rczVYBA@mail.gmail.com |
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On 21 June 2012 03:13, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> On 20.06.2012 21:51, Simon Riggs wrote:
>>
>> On 21 June 2012 02:32, Heikki Linnakangas
>> <heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>>>
>>> I'm not saying that we need to implement all possible conflict resolution
>>>
>>> algorithms right now - on the contrary I think conflict resolution
>>> belongs
>>> outside core
>>
>>
>> It's a pretty standard requirement to have user defined conflict
>> handling, if that's what you mean.
>>
>> I'm OK with conflict handling being outside of core as a module, if
>> that's what people think. We just need a commit hook. That is more
>> likely to allow a workable solution with 9.3 as well, ISTM. It's
>> likely to be contentious...
>
>
> Hmm, what do you need to happen at commit time?
>
> We already have RegisterXactCallback(), if that's enough...
Let me refer back to my notes and discuss this later, I'm just going
from vague memory here, which isn't helpful.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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