From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Dave Cramer <davecramer@postgres.rocks>
Cc: Andres Freund <andres@anarazel.de>
Cc: Michael Paquier <michael@paquier.xyz>
Cc: Fujii Masao <masao.fujii@oss.nttdata.com>
Cc: Masahiko Sawada <masahiko.sawada@2ndquadrant.com>
Cc: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Cc: Vladimir Sitnikov <sitnikov.vladimir@gmail.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: SIGSEGV from START_REPLICATION 0/XXXXXXX in XLogSendPhysical () at walsender.c:2762
Date: Fri, 5 Jun 2020 11:51:48 -0400
Message-ID: <20200605155148.GA19795@alvherre.pgsql> (raw)
In-Reply-To: <CADK3HH+BawQ+DHd6ZMfQcC_+__=eOnaW_A=JVxupe7jeN5Qg5g@mail.gmail.com>
On 2020-Jun-05, Dave Cramer wrote:
> On Thu, 4 Jun 2020 at 19:46, Alvaro Herrera <alvherre@2ndquadrant.com>
> wrote:
> > Ouch ... so they made IDENT in the replication grammar be a trigger to
> > enter the regular grammar. Crazy. No way to put those worms back in
> > the tin now, I guess.
>
> Is that documented ?
I don't think it is.
> > It is still my opinion that we should prohibit a logical replication
> > connection from being used to do physical replication. Horiguchi-san,
> > Sawada-san and Masao-san are all of the same opinion. Dave Cramer (of
> > the JDBC team) is not opposed to the change -- he says they're just
> > using it because they didn't realize they should be doing differently.
>
> I think my exact words were
>
> "I don't see this is a valid reason to keep doing something. If it is
> broken then fix it.
> Clients can deal with the change."
>
> in response to:
>
> > Well, I don't really think that we can just break a behavior that
> > exists since 9.4 as you could break applications relying on the
> > existing behavior, and that's also the point of Vladimir upthread.
>
> Which is different than not being opposed to the change. I don't see this
> as broken, and it's quite possible that some of our users are using
> it.
Apologies for misinterpreting.
> It certainly needs to be documented
I'd rather not.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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To: pgsql-hackers@postgresql.org
Cc: alvherre@2ndquadrant.com, davecramer@postgres.rocks, andres@anarazel.de, michael@paquier.xyz, masao.fujii@oss.nttdata.com, masahiko.sawada@2ndquadrant.com, horikyota.ntt@gmail.com, sitnikov.vladimir@gmail.com
Subject: Re: SIGSEGV from START_REPLICATION 0/XXXXXXX in XLogSendPhysical () at walsender.c:2762
In-Reply-To: <20200605155148.GA19795@alvherre.pgsql>
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