From: Tom Lane <tgl@sss.pgh.pa.us>
To: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
cc: Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>, fcs1@poczta.onet.pl,
        pgsql-bugs@postgresql.org
Subject: Re: BUG #14738: ALTER SERVER for foregin servers not working
In-reply-to: <c79504e3-b83b-2161-9d3a-5f34e4885072@lab.ntt.co.jp>
References: <20170710113917.7727.10247@wrigleys.postgresql.org>
 <1838.1499703533@sss.pgh.pa.us>
 <20170711.102840.130532041.horiguchi.kyotaro@lab.ntt.co.jp>
 <c79504e3-b83b-2161-9d3a-5f34e4885072@lab.ntt.co.jp>
Comments: In-reply-to Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
	message dated "Tue, 11 Jul 2017 10:38:00 +0900"
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Date: Tue, 11 Jul 2017 15:39:14 -0400
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Amit Langote <Langote_Amit_f8@lab.ntt.co.jp> writes:
> Horiguchi-san,
> On 2017/07/11 10:28, Kyotaro HORIGUCHI wrote:
>> I faintly recall such discussion was held aroud that time and
>> maybe we concluded that we don't do that but I haven't find such
>> a thread in pgsql-hackers..

> I mentioned it in my reply.  Here again:
> https://www.postgresql.org/message-id/20160405.184408.166437663.horiguchi=
.kyotaro%40lab.ntt.co.jp

The followup discussion noted that that approach was no good because it
would only close connections in the same session that had done the ALTER
SERVER.  I think the basic idea of marking postgres_fdw connections as
needing to be remade when next possible is OK, but we have to drive it
off catcache invalidation events, the same as we did in c52d37c8b.  An
advantage of that way is we don't need any new hooks in the core code.

Kyotaro-san, are you planning to update your old patch?

			regards, tom lane


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