Thread: pgsql: Avoid possible regression test instability in timestamp.sql.
Avoid possible regression test instability in timestamp.sql. Concurrent autovacuum could result in a change in the order of the live rows in timestamp_tbl. While this would not happen with the default autovacuum parameters, it's fairly easy to hit if autovacuum_vacuum_threshold is made small enough to allow autovac to decide to process this table. That's a stumbling block for trying to exercise autovacuum aggressively using the core regression tests. To fix, replace an unqualified DELETE with a TRUNCATE. There's a similar DELETE just above (and no order-sensitive queries between), so this doesn't lose any test coverage and might indeed be argued to improve it. Discussion: https://postgr.es/m/17428.1555348950@sss.pgh.pa.us Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/47169c25500a70a7d04076860717f2f4f0ea83a7 Modified Files -------------- src/test/regress/expected/timestamp.out | 2 +- src/test/regress/sql/timestamp.sql | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)