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+# DEBUG_SYNC must be compiled in.
+--source include/have_debug_sync.inc
+--source include/have_debug.inc
+
+# We need to test the use case:
+# a. Create a transaction T1 that will be promoted to RW.
+# b. Create a transaction T2 that will be promoted to RW.
+# a. Create a RO transaction T3
+# d. T3 does a select - creates a read view that doesn't include T1 and T2
+# e. T1 & T2 do some updates - this promotes T1 & T2 to RW transactions
+# f. T1 & T2 Commit
+# g. T3 Does a select - it should not see the changes of T1 & T2
+
+--source include/have_innodb.inc
+--source include/count_sessions.inc
+
+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;
+--echo 'T1'
+SET AUTOCOMMIT=0;
+BEGIN;
+SELECT * FROM t2;
+
+connection default;
+--echo 'T2'
+SET AUTOCOMMIT=0;
+BEGIN;
+SELECT * FROM t1;
+
+connection con2;
+--echo 'T3'
+SET AUTOCOMMIT=0;
+SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
+BEGIN;
+SELECT * FROM t1;
+SELECT * FROM t2;
+
+connection con1;
+--echo 'T1'
+UPDATE t2 SET c1 = c1 + 100;
+SELECT * FROM t2;
+COMMIT;
+
+connection default;
+--echo 'T2'
+UPDATE t1 SET c1 = c1 + 100;
+SELECT * FROM t1;
+COMMIT;
+
+connection con2;
+--echo 'T3'
+SET DEBUG_SYNC='row_search_for_mysql_before_return WAIT_FOR waiting1';
+--send SELECT * FROM t1;
+
+connection default;
+--echo 'T2'
+SET DEBUG_SYNC='now SIGNAL waiting1';
+--echo 'Signalled T3'
+
+connection con2;
+--echo 'T3'
+reap;
+
+connection con2;
+--echo 'T3'
+SET DEBUG_SYNC='row_search_for_mysql_before_return WAIT_FOR waiting1';
+--send SELECT * FROM t2;
+
+connection default;
+--echo 'T2'
+SET DEBUG_SYNC='now SIGNAL waiting1';
+--echo 'Signalled T3'
+
+connection con2;
+--echo 'T3'
+reap;
+
+connection default;
+disconnect con1;
+disconnect con2;
+
+# We need to test the use case:
+# a. Create a transaction T1 that will be promoted to RW.
+# b. Create a transaction T2 that will be promoted to RW.
+# c. T2 does some updates - this promotes T2 to RW transactions
+# d. T2 Commits
+# e. Create a RO transaction T3
+# f. T3 does a select - creates a read view that doesn't include T1
+# g. T1 does some updates - this promotes T1 to RW transactions
+# h. T1 Commits
+# i. T3 Does a select - it should not see the changes made by T1 but should
+# see the changes by T2
+
+--connect (con1,localhost,root,,)
+--connect (con2,localhost,root,,)
+
+connection con1;
+--echo 'T1'
+SET AUTOCOMMIT=0;
+BEGIN;
+SELECT * FROM t1;
+
+connection default;
+--echo 'T2'
+SET AUTOCOMMIT=0;
+BEGIN;
+SELECT * FROM t2;
+UPDATE t2 SET c1 = c1 + 100;
+SELECT * FROM t2;
+COMMIT;
+
+connection con2;
+--echo 'T3'
+SET AUTOCOMMIT=0;
+SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
+BEGIN;
+SELECT * FROM t1;
+SELECT * FROM t2;
+
+connection con1;
+--echo 'T1'
+UPDATE t1 SET c1 = c1 + 100;
+SELECT * FROM t1;
+COMMIT;
+
+connection con2;
+--echo 'T3'
+SET DEBUG_SYNC='row_select_wait WAIT_FOR waiting1';
+--send SELECT * FROM t1;
+
+connection con1;
+--echo 'T2'
+SET DEBUG_SYNC='now SIGNAL waiting1';
+--echo 'Signalled T3'
+
+connection con2;
+--echo 'T3'
+reap;
+
+connection con2;
+--echo 'T3'
+SET DEBUG_SYNC='row_select_wait WAIT_FOR waiting1';
+--send SELECT * FROM t2;
+
+connection default;
+--echo 'T2'
+SET DEBUG_SYNC='now SIGNAL waiting1';
+--echo 'Signalled T3'
+
+connection con2;
+--echo 'T3'
+reap;
+
+connection default;
+disconnect con1;
+disconnect con2;
+
+DROP TABLE t1;
+DROP TABLE t2;
+
+--echo #
+--echo # Bug 21433768: NON-REPEATABLE READ WITH REPEATABLE READ ISOLATION
+--echo #
+
+--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;
+
+START TRANSACTION;
+UPDATE t1 SET col2 = 100;
+SET DEBUG_SYNC = 'after_trx_committed_in_memory SIGNAL s1 WAIT_FOR s2';
+--send 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;
+SET DEBUG_SYNC = 'now SIGNAL s2';
+
+connection con1;
+reap;
+disconnect con1;
+
+connection default;
+
+DROP TABLE t1;
+
+# Clean up resources used in this test case.
+SET DEBUG_SYNC= 'RESET';
+--source include/wait_until_count_sessions.inc