Re: nbtree backwards scan test coverage

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: Alexander Lakhin <exclusion(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: nbtree backwards scan test coverage
Date: 2026-07-29 14:47:16
Message-ID: CAH2-Wzk9rX3ZSX_fiorm2xJmzCheXgAqXSwUcsUVALtYLq=Xng@mail.gmail.com
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Hi Alexander,

On Wed, Jul 29, 2026 at 1:00 AM Alexander Lakhin <exclusion(at)gmail(dot)com> wrote:
> The new backwards-scan-concurrent-splits test has failed a couple of times

I reproduced this locally. Attached patch fixes this using the same
approach (one that you suggested) as Heikki's nearby
nbtree_half_dead_pages.sql fixup from commit 1c64d2fc.

I'll push this just as soon as it passes CI.

Thanks for the report!
--
Peter Geoghegan

Attachment Content-Type Size
v1-0001-Fix-autovacuum-induced-flakiness-in-backwards-sca.patch application/octet-stream 5.6 KB

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