galera/t/MDEV-20616.test

#
# Test different deadlock scenarios in innodb and make sure that
# wsrep patch does not handle them as BF aborts.
#

--source include/galera_cluster.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc

##############################################################################
# test case to verify that natural deadlock of trigger SP execution is
# handled correctly
##############################################################################

--echo
--echo Test phase 1 to make sure that natral deadlock in trigger SP execution is
--echo handled correctly
--echo
--let $aborts_old = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`

CREATE TABLE t1(a INT);
CREATE TABLE t2(f1 INT, f2 INT, f3 INT);
--disable_query_log
let $run=1000;
while($run)
{
  INSERT INTO t2 VALUES (1, 2, 3);
  dec $run;
}
--enable_query_log

DELIMITER |;
CREATE PROCEDURE proc()
BEGIN
    INSERT INTO t2 VALUES(100, 200, 300);
    UPDATE t2 SET f3 = f3 + 100;
END|
DELIMITER ;|

CREATE TRIGGER t1 BEFORE INSERT ON t1 FOR EACH ROW CALL proc();

--send INSERT INTO t1 VALUES(2);

--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
--send INSERT INTO t1 VALUES(1);

--connection node_1
--error 0,ER_LOCK_DEADLOCK
--reap

--connection node_1a
--error 0,ER_LOCK_DEADLOCK
--reap

--connection node_1
--let $aborts_new = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`
--disable_query_log
--eval SELECT $aborts_new - $aborts_old AS wsrep__bf_aborts;
--enable_query_log
DROP TABLE t1;
DROP TABLE t2;
DROP PROCEDURE proc;

##############################################################################
#
# test case to verify that BF abort for SP execution is handled correctly
#
##############################################################################

--echo
--echo Test phase 2 to make sure that BF abort for SP execution is
--echo handled correctly
--echo
--connection node_1
SET SESSION wsrep_retry_autocommit = 0;
SET SESSION wsrep_sync_wait = 0;
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(1));

# Control connection for Galera sync point management
--connection node_1a

SET SESSION wsrep_retry_autocommit = 0;
SET SESSION wsrep_sync_wait = 0;
--let $aborts_old = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`

DELIMITER |;
CREATE PROCEDURE proc_update()
BEGIN
  UPDATE t1 SET f2 = 'b';
END|
DELIMITER ;|

INSERT INTO t1 VALUES(1, 'a');

--connection node_1
SET debug_sync='wsrep_before_certification SIGNAL ready WAIT_FOR cont';
--send CALL proc_update

--connection node_1a
SET debug_sync='now WAIT_FOR ready';

--connection node_2
UPDATE t1 SET f2='c';

--connection node_1a
# wait for BF to happen
--let $wait_condition = SELECT VARIABLE_VALUE = $aborts_old + 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'
--source include/wait_condition.inc

SET debug_sync='now SIGNAL cont';

--connection node_1
--error ER_LOCK_DEADLOCK
--reap

--connection node_1a
SET debug_sync='RESET';

DROP PROCEDURE proc_update;


##############################################################################
#
# test case to verify that natural deadlock  does not cause BF abort
#
##############################################################################

--connection node_1
--echo
--echo Test phase 3 to make sure natural deadlock is not treated as BF abort
--echo
TRUNCATE t1;
INSERT INTO t1 VALUES (1, 'a'), (2, 'a');

--connection node_1a
--let $aborts_old = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`

START TRANSACTION;
UPDATE t1 SET f2 = 'b' WHERE f1 = 1;

--connection node_1
START TRANSACTION;
UPDATE t1 SET f2 = 'c' WHERE f1 = 2;

--connection node_1a
# this hangs for lock wait
--send UPDATE t1 SET f2 = 'b' WHERE f1 = 2

#
# classic deadlock happens here
#
--connection node_1
--error 0, ER_LOCK_DEADLOCK
UPDATE t1 SET f2 = 'c' WHERE f1 = 1;

--connection node_1a
--error 0, ER_LOCK_DEADLOCK
--reap
COMMIT;

#
# either one of SP executions was aborted because of natural deadlock, or in worst case
# they were ordered seqeuntailly, and both succeeded.
# anyways, we just check here that no BF aborts happened
#
--let $aborts_new = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`
--disable_query_log
--eval SELECT $aborts_new - $aborts_old AS wsrep__bf_aborts;
--enable_query_log

--connection node_1
ROLLBACK;

##############################################################################
#
# test case to verify that natural deadlock within SP exceution
# does not cause BF abort
#
##############################################################################

--echo
--echo Test phase 4 to make sure natural deadlock inside SP execution
--echo is not treated as BF abort
--echo

--connection node_1a
TRUNCATE t1;
INSERT INTO t1 VALUES (1, 'a'), (2, 'a');

--let $aborts_old = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`

DELIMITER |;
CREATE PROCEDURE proc_update_1()
BEGIN
  START TRANSACTION;
  UPDATE t1 SET f2 = 'b' WHERE f1 = 1;
  SELECT SLEEP(5);
  UPDATE t1 SET f2 = 'b' WHERE f1 = 2;
  COMMIT;
END|
DELIMITER ;|

DELIMITER |;
CREATE PROCEDURE proc_update_2()
BEGIN
  START TRANSACTION;
  UPDATE t1 SET f2 = 'c' WHERE f1 = 2;
  SELECT SLEEP(5);
  UPDATE t1 SET f2 = 'c' WHERE f1 = 1;
  COMMIT;
END|
DELIMITER ;|

--connection node_1
--send CALL proc_update_1

--connection node_1a
#
# calling proc_update_2 should cause a natural deadlock
# however, this test is not deterministic, and depends on the sleep() to
# cause expected ordering for update statement execution within SPs
# We therefore, allow both success and deadlock error for the result
#
--error 0, ER_LOCK_DEADLOCK
CALL proc_update_2;

#
# either one of SP executions was aborted because of natural deadlock, or in worst case
# they were ordered seqeuntailly, and both succeeded.
# anyways, we just check here that no BF aborts happened
#
--let $aborts_new = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`
--disable_query_log
--eval SELECT $aborts_new - $aborts_old AS wsrep__bf_aborts;
--enable_query_log


--connection node_1
--error 0, ER_LOCK_DEADLOCK
--reap

DROP PROCEDURE proc_update_1;
DROP PROCEDURE proc_update_2;
DROP TABLE t1;