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From: Michael Paquier <michael@paquier.xyz>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Alexander Lakhin <exclusion@gmail.com>
Cc: Sergei Kornilov <sk@zsrv.org>
Cc: Noah Misch <noah@leadboat.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Cc: pgsql-bugs@lists.postgresql.org, Fujii Masao <masao.fujii@oss.nttdata.com>
Subject: Re: BUG #17928: Standby fails to decode WAL on termination of primary
Date: Tue, 19 Sep 2023 18:53:14 +0900
Message-ID: <ZQlvihvHo5JspVpV@paquier.xyz> (raw)
In-Reply-To: <CA+hUKGK53D8OYxTQiQ9qzJsA7ymcHTqqh7V_PUM06TCT=HOJqg@mail.gmail.com>
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On Tue, Sep 19, 2023 at 09:25:34PM +1200, Thomas Munro wrote:
> The problem was that the Perl functions advance_XXX() would sometimes
> see an "unflushed" insert position caused by hint records and other
> incidental stuff, and then we'd write our contrived header at a
> disconnected location after a bunch of (unwritten) zeroes.  The
> solution in this version is to start each test with
> emit_message($node, 0), which flushes a small record.

Makes sense.  Does this also address the other issue you've noticed on
v12 when ICU is enabled (the one with the initial LSN changed after
initdb)?
--
Michael

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