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

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: Peter Geoghegan <peter(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Subject: Re: Cascading replication: should we detect/prevent cycles?
Date: 2013-01-08 19:51:05
Message-ID: CA+U5nM+o-cJa3K6t5QySbf2FeenQx1OuZpHEhByMuz-g9jBAfw@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On 8 January 2013 18:46, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
> On 1/5/13 1:21 PM, Peter Geoghegan wrote:
>>
>> On 21 December 2012 14:08, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>>
>>> I'm sure it's possible; I don't *think* it's terribly easy.
>>
>>
>> I'm inclined to agree that this isn't a terribly pressing issue.
>> Certainly, the need to introduce a bunch of new infrastructure to
>> detect this case seems hard to justify.
>
>
> Impossible to justify, I'd say.
>
> Does anyone have any objections to my adding this to the TODO list, in case
> some clever GSOC student comes up with a way to do it *without* adding a
> bunch of infrastructure?

Daniel already did object....

I think we have other problems that need solving much more than this.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


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