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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");
connect con1,localhost,root,,;
connect con2,localhost,root,,;
connection con1;
'T1'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t2;
c1 c2
0 a
1 b
2 c
3 d
connection default;
'T2'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t1;
c1 c2
0 0
1 1
2 2
3 3
connection con2;
'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
connection con1;
'T1'
UPDATE t2 SET c1 = c1 + 100;
SELECT * FROM t2;
c1 c2
100 a
101 b
102 c
103 d
COMMIT;
connection default;
'T2'
UPDATE t1 SET c1 = c1 + 100;
SELECT * FROM t1;
c1 c2
100 0
101 1
102 2
103 3
COMMIT;
connection con2;
'T3'
SET DEBUG_SYNC='row_search_for_mysql_before_return WAIT_FOR waiting1';
SELECT * FROM t1;;
connection default;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
connection con2;
'T3'
c1 c2
0 0
1 1
2 2
3 3
connection con2;
'T3'
SET DEBUG_SYNC='row_search_for_mysql_before_return WAIT_FOR waiting1';
SELECT * FROM t2;;
connection default;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
connection con2;
'T3'
c1 c2
0 a
1 b
2 c
3 d
connection default;
disconnect con1;
disconnect con2;
connect con1,localhost,root,,;
connect con2,localhost,root,,;
connection con1;
'T1'
SET AUTOCOMMIT=0;
BEGIN;
SELECT * FROM t1;
c1 c2
100 0
101 1
102 2
103 3
connection default;
'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;
connection con2;
'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
connection con1;
'T1'
UPDATE t1 SET c1 = c1 + 100;
SELECT * FROM t1;
c1 c2
200 0
201 1
202 2
203 3
COMMIT;
connection con2;
'T3'
SET DEBUG_SYNC='row_select_wait WAIT_FOR waiting1';
SELECT * FROM t1;;
connection con1;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
connection con2;
'T3'
c1 c2
100 0
101 1
102 2
103 3
connection con2;
'T3'
SET DEBUG_SYNC='row_select_wait WAIT_FOR waiting1';
SELECT * FROM t2;;
connection default;
'T2'
SET DEBUG_SYNC='now SIGNAL waiting1';
'Signalled T3'
connection con2;
'T3'
c1 c2
200 a
201 b
202 c
203 d
connection default;
disconnect con1;
disconnect con2;
DROP TABLE t1;
DROP TABLE t2;
#
# Bug 21433768: NON-REPEATABLE READ WITH REPEATABLE READ ISOLATION
#
connect con1,localhost,root,,;
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;
disconnect con1;
connection default;
DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';
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