From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
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To: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Synchronization levels in SR |
Date: | 2010-05-25 16:04:38 |
Message-ID: | 1274803478.6203.2013.camel@ebony |
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Lists: | pgsql-hackers |
On Tue, 2010-05-25 at 12:40 +0900, Fujii Masao wrote:
> On Tue, May 25, 2010 at 10:29 AM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
> > I agree that #4 should be done last, but it will be needed, not in the
> > least by your employer ;-) . I don't see any obvious way to make #4
> > compatible with any significant query load on the slave, but in general
> > I'd think that users of #4 are far more concerned with 0% data loss than
> > they are with getting the slave to run read queries.
>
> Since #2 and #3 are enough for 0% data loss, I think that such users
> would be more concerned about what results are visible in the standby.
> No?
Please add #4 also. You can do that easily at the same time as #2 and
#3, and it will leave me free to fix the perceived conflict problems.
--
Simon Riggs www.2ndQuadrant.com
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