Re: speed up a logical replica setup

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: Peter Eisentraut <peter(at)eisentraut(dot)org>, Noah Misch <noah(at)leadboat(dot)com>, Alexander Lakhin <exclusion(at)gmail(dot)com>, Euler Taveira <euler(at)eulerto(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Shlok Kyal <shlok(dot)kyal(dot)oss(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, "kuroda(dot)hayato(at)fujitsu(dot)com" <kuroda(dot)hayato(at)fujitsu(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Michael Paquier <michael(at)paquier(dot)xyz>, Andres Freund <andres(at)anarazel(dot)de>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Fabrízio de Royes Mello <fabriziomello(at)gmail(dot)com>, vignesh C <vignesh21(at)gmail(dot)com>
Subject: Re: speed up a logical replica setup
Date: 2024-06-30 18:58:00
Message-ID: 2509767.1719773880@sss.pgh.pa.us
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I wrote:
> In hopes of moving things along as we approach the v18 branch,
> I went ahead and pushed Kuroda-san's patches (with a bit of
> further editorialization).

So b3f5ccebd promptly blew up on fairywren [1]:

connection error: 'psql: error: unterminated quoted string in connection info string'
while running 'psql -XAtq -d port=52984 host=C:/tools/nmsys64/tmp/hHg_pngw4z dbname='regression\\\\"\\\\  !"#$%&\\'()*+,-\\\\\\\\"\\\\\\\\\\\\' -f - -v ON_ERROR_STOP=1' at C:/tools/nmsys64/home/pgrunner/bf/root/HEAD/pgsql/src/test/perl/PostgreSQL/Test/Cluster.pm line 2124.

This shows that the command-line arguments to psql are not getting
adequately quoted on that platform. AFAICS, we are relying on
IPC::Run::run to perform such quoting, and it seems to be
falling down here. I wonder what version of IPC::Run fairywren
is using.

regards, tom lane

[1] https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=fairywren&dt=2024-06-30%2018%3A03%3A06

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