Re: pgsql: Remove test for pg_stat_reset_shared() in stats.sql

On Tue, Nov 28, 2023 at 9:51 AM Michael Paquier <michael@paquier.xyz> wrote:
>
> Remove test for pg_stat_reset_shared() in stats.sql
>
> Some buildfarm members have been failing a test related to pg_stat_io,
> as an effect of 23c8c0c8f472 that has switched pg_stat_reset_shared()
> from being a no-op to reset all shared stats types.
>
> This extra reset has the effect to make pg_stat_io's counters low enough
> that little concurrent activity is enough to cause a failure.  Another
> thing I have considered is to move this sequence at the end of
> stats.sql, but there are other instabilities, one being pg_stat_wal.
>
> Knowing that there are already tests for the reset of each individual
> shared stats target, this test has limited value, so let's remove it to
> minimize the number of resets done for each shared stats type.  This
> should hopefully improve the stability of the whole.
>
> Discussion: https://postgr.es/m/3500949.1700935734@sss.pgh.pa.us
>
> Branch
> ------
> master
>
> Details
> -------
> https://git.postgresql.org/pg/commitdiff/a9a8108411e49c81316a9aba848a7f9ad3d3e939
>
> Modified Files
> --------------
> src/test/regress/expected/stats.out | 44 -------------------------------------
> src/test/regress/sql/stats.sql      | 10 ---------
> 2 files changed, 54 deletions(-)

Is there any reason for not removing [1] unneeded statements from
stats.sql like the attached?

[1] https://www.postgresql.org/message-id/CALj2ACWtgPMg38JTO-AWrdLp4duFzR3iBq39Xt%2Bhn2%2BS2yzG7w%40mail.gmail.com

--
Bharath Rupireddy
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com