mariadb/mysql-test/suite/galera/t/MW-388.test

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

--connection node_1
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(255)) Engine=InnoDB;

DELIMITER |;
CREATE PROCEDURE insert_proc ()
BEGIN
        DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
        BEGIN
                GET DIAGNOSTICS CONDITION 1 @errno = MYSQL_ERRNO;
        END;
        INSERT INTO t1 VALUES (1, 'node 1'),(2, 'node 1');
        INSERT INTO t1 VALUES (3, 'node 1');
END|
DELIMITER ;|

# We need two slave threads here to guarantee progress.
# If we use only one thread the following could happen
# in node_1:
# We block the only slave thread in wsrep_apply_cb and we
# issue an INSERT (by calling the stored procedure) that will
# try to acquire galera's local monitor in pre_commit().
# This usually works fine, except for when a commit cut event
# sneaks in the slave queue and gets a local seqno smaller than
# that of the INSERT. Because there is only one slave thread,
# commit cut is not processed and therefore does not advance
# local monitor, and our INSERT remains stuck there.

SET GLOBAL wsrep_slave_threads = 2;
SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_apply_cb";

--let $expected_cert_failures = `SELECT VARIABLE_VALUE + 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_cert_failures'`

--connection node_2
--send INSERT INTO t1 VALUES (1, 'node 2');

--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
--connection node_1a
SET SESSION DEBUG_SYNC = "now WAIT_FOR sync.wsrep_apply_cb_reached";

--connection node_1
SET SESSION wsrep_sync_wait = 0;
--send CALL insert_proc ();

--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = $expected_cert_failures FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_cert_failures'
--source include/wait_condition.inc


SET GLOBAL DEBUG_DBUG = "";
SET DEBUG_SYNC = "now SIGNAL signal.wsrep_apply_cb";

--connection node_2
--reap

--connection node_1
# We expect no errors here, because the handler in insert_proc() caught the deadlock error
--reap
SELECT @errno = 1213;
SELECT * FROM t1;

--connection node_2
SELECT * FROM t1;

--connection node_1
SET GLOBAL wsrep_slave_threads = DEFAULT;
DROP TABLE t1;
DROP PROCEDURE insert_proc;

SET GLOBAL debug_dbug = NULL;
SET debug_sync='RESET';

# Make sure no pending signals are leftover to surprise subsequent tests.
SELECT @@debug_sync;