Adding upstream version 15.4.upstream/15.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/test/isolation/specs/serializable-parallel-2.spec b/src/test/isolation/specs/serializable-parallel-2.spec
new file mode 100644
index 0000000..c975d96
--- /dev/null
+++ b/src/test/isolation/specs/serializable-parallel-2.spec
@@ -0,0 +1,34 @@
+# Exercise the case where a read-only serializable transaction has
+# SXACT_FLAG_RO_SAFE set in a parallel query.
+
+setup
+{
+	CREATE TABLE foo AS SELECT generate_series(1, 100)::int a;
+	CREATE INDEX ON foo(a);
+	ALTER TABLE foo SET (parallel_workers = 2);
+}
+
+teardown
+{
+	DROP TABLE foo;
+}
+
+session s1
+setup 		{ BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE; }
+step s1r	{ SELECT COUNT(*) FROM foo; }
+step s1c 	{ COMMIT; }
+
+session s2
+setup		{
+			  BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE READ ONLY;
+			  SET parallel_setup_cost = 0;
+			  SET parallel_tuple_cost = 0;
+			  SET min_parallel_index_scan_size = 0;
+			  SET parallel_leader_participation = off;
+			  SET enable_seqscan = off;
+			}
+step s2r1	{ SELECT COUNT(*) FROM foo; }
+step s2r2	{ SELECT COUNT(*) FROM foo; }
+step s2c	{ COMMIT; }
+
+permutation s1r s2r1 s1c s2r2 s2c