Re: Fixing WAL instability in various TAP tests

From: Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Michael Paquier <michael(at)paquier(dot)xyz>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Noah Misch <noah(at)leadboat(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Fixing WAL instability in various TAP tests
Date: 2021-09-28 18:07:54
Message-ID: 0AE9B97A-EE55-41DD-A913-CDBCAA8E2214@enterprisedb.com
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> On Sep 28, 2021, at 10:27 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> I wonder whether it's bloom's fault
> or a core bug.

Looking closer at the TAP test, it's not ORDERing the result set from the SELECTs on either node, but it is comparing the sets for stringwise equality, which is certainly order dependent.

—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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