Re: prevent immature WAL streaming

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, "Bossart, Nathan" <bossartn(at)amazon(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, "andres(at)anarazel(dot)de" <andres(at)anarazel(dot)de>, "masao(dot)fujii(at)oss(dot)nttdata(dot)com" <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "mengjuan(dot)cmj(at)alibaba-inc(dot)com" <mengjuan(dot)cmj(at)alibaba-inc(dot)com>, "Jakub(dot)Wartak(at)tomtom(dot)com" <Jakub(dot)Wartak(at)tomtom(dot)com>, Ryo Matsumura <matsumura(dot)ryo(at)fujitsu(dot)com>
Subject: Re: prevent immature WAL streaming
Date: 2021-09-29 22:48:32
Message-ID: 3006958.1632955712@sss.pgh.pa.us
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Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> On 9/29/21 5:27 PM, Alvaro Herrera wrote:
>> So, do we take the stance that we have no right to expect pg_basebackup
>> to work if we didn't pass allow_streaming => 1? If so, the fix is to
>> add it. But my preferred fix would be to call set_replication_conf if
>> either allows_streaming or has_archiving are given.
>>
>> Another easy fix would be to call $primary2->set_replication_conf in the
>> test file, but then you'd complain that that's supposed to be an
>> internal method :-)

> It claims that but it's also used here:
> src/bin/pg_basebackup/t/010_pg_basebackup.pl

Given that precedent, it seems like calling set_replication_conf
is a good quick-fix for getting the buildfarm green again.
But +1 for then refactoring this to get rid of these hacks (both
with respect to pg_hba.conf and the postgresql.conf parameters)
in both of these tests.

regards, tom lane

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