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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
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