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Set synchronous_commit=on in test_setup.sql.

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Starting in cc50080a82 create_index test fails when run with
synchronous_commit=off. synchronous_commit=off delays when hint bits may be
set. Some plans change depending on the number of all-visible pages, which in
turn can be influenced by the delayed hint bits.

Force synchronous_commit to `on` in test_setup.sql. Not very satisfying, but
there's no obvious alternative.

Reported-By: Aleksander Alekseev <aleksander@timescale.com>
Author: Andres Freund <andres@anarazel.de>
Author: Aleksander Alekseev <aleksander@timescale.com>
Discussion: https://www.postgresql.org/message-id/flat/CAJ7c6TPJNof1Q+vJsy3QebgbPgXdu2ErPvYkBdhD6_Ckv5EZRg@mail.gmail.com
This commit is contained in:
Andres Freund
2022-03-12 14:04:50 -08:00
parent e370f100f0
commit 02fea8fdda
2 changed files with 15 additions and 0 deletions
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7
src/test/regress/expected/test_setup.out
View File

@ -7,6 +7,13 @@
\getenv dlsuffix PG_DLSUFFIX
\set regresslib :libdir '/regress' :dlsuffix
--
-- synchronous_commit=off delays when hint bits may be set. Some plans change
-- depending on the number of all-visible pages, which in turn can be
-- influenced by the delayed hint bits. Force synchronous_commit=on to avoid
-- that source of variability.
--
SET synchronous_commit = on;
--
-- Postgres formerly made the public schema read/write by default,
-- and most of the core regression tests still expect that.
--

8
src/test/regress/sql/test_setup.sql
View File

@ -9,6 +9,14 @@
\set regresslib :libdir '/regress' :dlsuffix
--
-- synchronous_commit=off delays when hint bits may be set. Some plans change
-- depending on the number of all-visible pages, which in turn can be
-- influenced by the delayed hint bits. Force synchronous_commit=on to avoid
-- that source of variability.
--
SET synchronous_commit = on;
--
-- Postgres formerly made the public schema read/write by default,
-- and most of the core regression tests still expect that.