#
# Test manipulating wsrep_desync while an RSU operation is in progress
#

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

# First, test wsrep_desync 1 > 0 during DDL

--connection node_1
CREATE TABLE t1 (f1 INTEGER) Engine=InnoDB;

SET GLOBAL wsrep_desync=1;
SET wsrep_OSU_method=RSU;

SET DEBUG_SYNC = 'alter_table_before_open_tables WAIT_FOR continue';
--send ALTER TABLE t1 ADD COLUMN f2 INTEGER;


--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
--connect node_1b, 127.0.0.1, root, , test, $NODE_MYPORT_1

--connection node_1a
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE = 'debug sync point: alter_table_before_open_tables'
--source include/wait_condition.inc

SET GLOBAL wsrep_desync=0;
SET DEBUG_SYNC= 'now SIGNAL continue';

--connection node_1
--reap

SHOW CREATE TABLE t1;
SHOW VARIABLES LIKE 'wsrep_desync';
SET wsrep_OSU_method=TOI;

DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';

# Next, test wsrep_desync 0 > 1 during DDL, currently not allowed

--connection node_1
CREATE TABLE t1 (f1 INTEGER) Engine=InnoDB;

SET GLOBAL wsrep_desync=0;
SET wsrep_OSU_method=RSU;

SET DEBUG_SYNC = 'alter_table_before_create_table_no_lock WAIT_FOR continue';
--send ALTER TABLE t1 ADD COLUMN f2 INTEGER;

--connection node_1a

--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE = 'debug sync point: alter_table_before_create_table_no_lock'
--source include/wait_condition.inc

# wsrep_desync=1 will block
--send SET GLOBAL wsrep_desync=1;


--connection node_1b
--sleep 2
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE INFO = 'SET GLOBAL wsrep_desync=1'
--source include/wait_condition.inc

SET DEBUG_SYNC= 'now SIGNAL continue';

--connection node_1
--reap

--connection node_1a
--reap
SET GLOBAL wsrep_desync=0;

SHOW CREATE TABLE t1;

# Restore old state
SET wsrep_OSU_method=TOI;
DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';

CALL mtr.add_suppression("Protocol violation");
CALL mtr.add_suppression("desync failed");

--connection node_2
CALL mtr.add_suppression("Protocol violation");