config root man

CREATE TABLE t1 (c1 INT , c2 CHAR(10), PRIMARY KEY (c1)) ENGINE = InnoDB;
INSERT INTO t1 VALUES(0, "0");
INSERT INTO t1 VALUES(1, "1");
INSERT INTO t1 VALUES(2, "2");
INSERT INTO t1 VALUES(3, "3");
CREATE TABLE t2 (c1 INT , c2 CHAR(10), PRIMARY KEY (c1)) ENGINE = InnoDB;
INSERT INTO t2 VALUES(0, "a");
INSERT INTO t2 VALUES(1, "b");
INSERT INTO t2 VALUES(2, "c");
INSERT INTO t2 VALUES(3, "d");
'T1'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t2;
c1	c2
0	a
1	b
2	c
3	d
'T2'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t1;
c1	c2
0	0
1	1
2	2
3	3
'T3'
SET AUTOCOMMIT=0;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
BEGIN;
SELECT * FROM t1;
c1	c2
0	0
1	1
2	2
3	3
SELECT * FROM t2;
c1	c2
0	a
1	b
2	c
3	d
'T1'
UPDATE t2 SET c1 = c1 + 100;
SELECT * FROM t2;
c1	c2
100	a
101	b
102	c
103	d
COMMIT;
'T2'
UPDATE t1 SET c1 = c1 + 100;
SELECT * FROM t1;
c1	c2
100	0
101	1
102	2
103	3
COMMIT;
'T3'
SET DEBUG_SYNC='row_search_for_mysql_before_return WAIT_FOR waiting1';
SELECT * FROM t1;;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
'T3'
c1	c2
0	0
1	1
2	2
3	3
'T3'
SET DEBUG_SYNC='row_search_for_mysql_before_return WAIT_FOR waiting1';
SELECT * FROM t2;;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
'T3'
c1	c2
0	a
1	b
2	c
3	d
'T1'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t1;
c1	c2
100	0
101	1
102	2
103	3
'T2'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t2;
c1	c2
100	a
101	b
102	c
103	d
UPDATE t2 SET c1 = c1 + 100;
SELECT * FROM t2;
c1	c2
200	a
201	b
202	c
203	d
COMMIT;
'T3'
SET AUTOCOMMIT=0;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
BEGIN;
SELECT * FROM t1;
c1	c2
100	0
101	1
102	2
103	3
SELECT * FROM t2;
c1	c2
200	a
201	b
202	c
203	d
'T1'
UPDATE t1 SET c1 = c1 + 100;
SELECT * FROM t1;
c1	c2
200	0
201	1
202	2
203	3
COMMIT;
'T3'
SET DEBUG_SYNC='row_select_wait WAIT_FOR waiting1';
SELECT * FROM t1;;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
'T3'
c1	c2
100	0
101	1
102	2
103	3
'T3'
SET DEBUG_SYNC='row_select_wait WAIT_FOR waiting1';
SELECT * FROM t2;;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
'T3'
c1	c2
200	a
201	b
202	c
203	d
DROP TABLE t1;
DROP TABLE t2;
#
# Bug 21433768: NON-REPEATABLE READ WITH REPEATABLE READ ISOLATION
#
# connection con1
CREATE TABLE t1(col1 INT PRIMARY KEY, col2 INT) ENGINE = InnoDB;
INSERT INTO t1 values (1, 0), (2, 0);
SELECT * FROM t1 ORDER BY col1;
col1	col2
1	0
2	0
START TRANSACTION;
UPDATE t1 SET col2 = 100;
SET DEBUG_SYNC = 'after_trx_committed_in_memory SIGNAL s1 WAIT_FOR s2';
COMMIT;;
# connection default
SET DEBUG_SYNC = 'now WAIT_FOR s1';
UPDATE t1 SET col2 = col2 + 10 where col1 = 1;
COMMIT;
SELECT * FROM t1 ORDER BY col1;
col1	col2
1	110
2	100
SET DEBUG_SYNC = 'now SIGNAL s2';
# connection con1
# reap COMMIT for con1
# connection default
DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';