Attempt to fix test interference from foreign_key opfamily test The test added by c62b330912e creates a btree opfamily whose members include built-in integer operators, which get_mergejoin_opfamilies() finds regardless of schema. So any concurrently running test that planned an integer join or sort could pick the family up while it existed. That's the likely cause of the intermittent plan-shape changes seen in window.sql and equivclass.sql on the buildfarm after that commit.
Run the test inside a transaction that is rolled back, so the family is never committed and never visible to other backends. Per buildfarm members sifaka, prion, turaca, widowbird. Discussion: https://postgr.es/m/CA+HiwqGitHCmO7nvV4nXXYWDkNYA+zVcJj=jnml3c1o9b0g...@mail.gmail.com Backpatch-though: 19 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/9e17d25e79d4756be08b4a5521b4b58450217137 Modified Files -------------- src/test/regress/expected/foreign_key.out | 19 +++++++++++-------- src/test/regress/sql/foreign_key.sql | 19 +++++++++++-------- 2 files changed, 22 insertions(+), 16 deletions(-)
