From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
Cc: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Thom Brown <thom(at)linux(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Beena Emerson <memissemerson(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Support for N synchronous standby servers - take 2 |
Date: | 2016-02-04 20:06:36 |
Message-ID: | CA+TgmoYRWrNWYqsNBnsG-4zmop0+Y1bBGjtEEbkSRjCsM98DNw@mail.gmail.com |
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Lists: | pgsql-hackers |
On Thu, Feb 4, 2016 at 2:49 PM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> On Thu, Feb 4, 2016 at 10:40 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Thu, Feb 4, 2016 at 2:21 PM, Michael Paquier
>> <michael(dot)paquier(at)gmail(dot)com> wrote:
>>> Yes, please let's use the custom language, and let's not care of not
>>> more than 1 level of nesting so as it is possible to represent
>>> pg_stat_replication in a simple way for the user.
>>
>> "not" is used twice in this sentence in a way that renders me not able
>> to be sure that I'm not understanding it not properly.
>
> 4 times here. Score beaten.
>
> Sorry. Perhaps I am tired... I was just wondering if it would be fine
> to only support configurations up to one level of nested objects, like
> that:
> 2[node1, node2, node3]
> node1, 2[node2, node3], node3
> In short, we could restrict things so as we cannot define a group of
> nodes within an existing group.
I see. Such a restriction doesn't seem likely to me to prevent people
from doing anything actually useful. But I don't know that it buys
very much either. It's often not very much simpler to handle 2 levels
than n levels. However, I ain't writing the code so...
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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