#
# This test performs two dependent updates on two nodes and checks the results on the third where
# parallel apply is enabled.
#

--source include/galera_cluster.inc
--source include/have_innodb.inc

--let $galera_connection_name = node_3
--let $galera_server_number = 3
--source include/galera_connect.inc

CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);

--connection node_3
--let $wsrep_slave_threads_orig = `SELECT @@wsrep_slave_threads`
SET GLOBAL wsrep_slave_threads = 2;

--connection node_1
--send UPDATE t1 SET f1 = f1 + 10;

--connection node_2
--send UPDATE t1 SET f1 = f1 + 100;

--connection node_1
#
# Note that test is not deterministic. We have following cases possible
# (1) Both updates are certified locally and then executed by the applier
# (2) Certification of update in node_1 fails because applier has started
#     update from node_2
# (3) Certification of update in node_2 fails because applier has started
#     update from node_1
#
--error 0,ER_LOCK_DEADLOCK
--reap
SELECT COUNT(*) FROM t1;

--connection node_2
--error 0,ER_LOCK_DEADLOCK
--reap
SELECT COUNT(*) FROM t1;

--connection node_3
SELECT COUNT(*) FROM t1;
SELECT COUNT(*) IN (1, 2) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%committed%';

--eval SET GLOBAL wsrep_slave_threads = $wsrep_slave_threads_orig;

DROP TABLE t1;