setup { CREATE TABLE test_table (test_id integer NOT NULL, data text); SELECT master_create_distributed_table('test_table', 'test_id', 'hash'); SELECT master_create_worker_shards('test_table', 4, 2); } teardown { DROP TABLE IF EXISTS test_table CASCADE; } session "s1" step "s1-begin" { BEGIN; } step "s1-insert" { INSERT INTO test_table VALUES(1); } step "s1-commit" { COMMIT; } session "s2" step "s2-update" { UPDATE test_table SET data = 'blarg' WHERE test_id = 1; } # verify that an in-progress insert blocks concurrent updates permutation "s1-begin" "s1-insert" "s2-update" "s1-commit" # but an insert without xact will not block permutation "s1-insert" "s2-update"