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From: Bruce Momjian <bruce@momjian.us>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Jonathan S. Katz <jkatz@postgresql.org>
Cc: Laurenz Albe <laurenz.albe@cybertec.at>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: First draft of PG 17 release notes
Date: Mon, 7 Oct 2024 20:55:42 -0400
Message-ID: <ZwSDDm0bXAnHhk2F@momjian.us> (raw)
In-Reply-To: <CAA4eK1JjqNnPJLi58QdzGJ6=NQqctX+odXZvyO6oYPikU0WyDg@mail.gmail.com>
References: <ZjxLJpnH4VMkOMmi@momjian.us>
	<0749f42a-17e1-42c9-a8d4-542fcb9fafeb@postgresql.org>
	<7fd6ce37f6d14678b5024767aef7f8c5a414ba0c.camel@cybertec.at>
	<d1748552-31f5-4f80-937b-767b5f7d8324@postgresql.org>
	<Zu3UWHKwuzm-pVJo@momjian.us>
	<2536416.1726862711@sss.pgh.pa.us>
	<Zu3Y9ObRxWu8cUwm@momjian.us>
	<CAA4eK1+bChgccySmcm0LbvkmBDJ3ufsLneF4iNa_aZ7t2P6=8w@mail.gmail.com>
	<ZvirViPO4TJBmVxG@momjian.us>
	<CAA4eK1JjqNnPJLi58QdzGJ6=NQqctX+odXZvyO6oYPikU0WyDg@mail.gmail.com>

On Sun, Sep 29, 2024 at 06:33:29PM +0530, Amit Kapila wrote:
> > > It is better to write the above statement as:
> > > "pg_upgrade</application></link> now preserves replication slots on
> > > publishers and full subscription's state on subscribers". This is
> > > because replication slots are preserved on publishers. The subscribers
> > > preserve the subscription state.
> >
> > So, as I understand it, this preservation only happens when the _old_
> > Postgres version is 17+.
> >
> 
> Yes.
> 
> >  Do we want to try and explain that in the
> > Postgres 17 release notes?
> >
> 
> It would be good if we can capture that information without bloating
> the release document. However, this information is already present in
> pg_upgrade docs, so users have a way to know the same even if we can't
> mention it in the release notes.

I have developed the attached patch to mention it is "logical" slots,
and to mention its future use.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  When a patient asks the doctor, "Am I going to die?", he means 
  "Am I going to die soon?"

Attachments:

REL_17_STABLE_pg_upgrade.diff (text/x-diff, 707B) download diff --git a/doc/src/sgml/release-17.sgml b/doc/src/sgml/release-17.sgml index eb65d1d725d..1e620d810d4 100644 --- a/doc/src/sgml/release-17.sgml +++ b/doc/src/sgml/release-17.sgml @@ -63,7 +63,10 @@ <para> <link linkend="pgupgrade"><application>pg_upgrade</application></link> now - preserves replication slots on both publishers and subscribers + preserves logical replication slots on publishers and full + subscription state on subscribers. This will allow upgrades + to future major versions to continue logical replication without + requiring copy to resynchronize. </para> </listitem> </itemizedlist>

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  Cc: bruce@momjian.us, amit.kapila16@gmail.com, tgl@sss.pgh.pa.us, jkatz@postgresql.org, laurenz.albe@cybertec.at
  Subject: Re: First draft of PG 17 release notes
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