Re: Cascading replication: should we detect/prevent cycles?

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Josh Berkus <josh(at)agliodbs(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Cascading replication: should we detect/prevent cycles?
Date: 2012-12-19 17:08:59
Message-ID: 50D1F4AB.7010705@commandprompt.com
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On 12/19/2012 12:34 AM, Simon Riggs wrote:

> My logic is that if you make a 1 minute test you will notice your
> mistake, which is glaringly obvious. That is sufficient to prevent
> that mistake, IMHO.
>
> If you don't test your config and don't monitor either, good luck with HA.

I am not arguing whether you are right. I am arguing whether or not we
want to shoot all but our experts users in the foot. People make
mistakes, when reasonable we should help them not make those mistakes.

JD

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