mariadb/mysql-test/suite/rpl/r/rpl_found_rows.result
unknown dac6ffb958 BUG#36197: flush tables (or little table cache) can cause crash on slave
When flushing tables, there were a slight chance that the flush was occuring
between processing of two table map events. Since the tables are opened
one by one, it might result in that the tables were not valid and that sub-
sequent locking of tables would cause the slave to crash.

The problem is solved by opening and locking all tables at once using
simple_open_n_lock_tables(). Also, the patch contain a change to open_tables()
so that pre-locking only takes place when the trg_event_map is not zero, which
was not the case before (this caused the lock to be placed in thd->locked_tables
instead of thd->lock since the assumption was that triggers would be called
later and therefore the tables should be pre-locked).


mysql-test/suite/rpl/r/rpl_found_rows.result:
  Result change
mysql-test/suite/rpl/r/rpl_row_inexist_tbl.result:
  Result change
mysql-test/suite/rpl/t/rpl_found_rows.test:
  Adding drop of table that was created in test.
mysql-test/suite/rpl/t/rpl_slave_status.test:
  Adding waits for slave start and stop to ensure that test works.
sql/log_event.cc:
  Replacing table-by-table open and lock with a single call
  to simple_open_n_lock_tables(), which in turn required some
  changes to other code.
sql/log_event_old.cc:
  Replacing table-by-table open and lock with a single call
  to simple_open_n_lock_tables(), which in turn required some
  changes to other code.
sql/sql_base.cc:
  Extending check inside open_tables() so that pre-locking in only done if
  tables->trg_egent_map is non-zero.
mysql-test/include/wait_for_slave_sql_to_start.inc:
  New BitKeeper file ``mysql-test/include/wait_for_slave_sql_to_start.inc''
2008-05-12 19:50:53 +02:00

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Text

stop slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
start slave;
==== 0. Setting it all up ====
SET BINLOG_FORMAT=STATEMENT;
**** On Master ****
CREATE TABLE t1 (a INT);
CREATE TABLE logtbl (sect INT, test INT, count INT);
INSERT INTO t1 VALUES (1),(2),(3);
INSERT INTO t1 SELECT 2*a+3 FROM t1;
INSERT INTO t1 SELECT 2*a+3 FROM t1;
INSERT INTO t1 SELECT 2*a+3 FROM t1;
INSERT INTO t1 SELECT 2*a+3 FROM t1;
INSERT INTO t1 SELECT 2*a+3 FROM t1;
INSERT INTO t1 SELECT 2*a+3 FROM t1;
#### 1. Using statement mode ####
==== 1.1. Simple test ====
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
SELECT FOUND_ROWS() INTO @a;
INSERT INTO logtbl VALUES(1,1,@a);
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a < 5 ORDER BY a LIMIT 1;
a
1
SELECT FOUND_ROWS() INTO @a;
INSERT INTO logtbl VALUES(1,2,@a);
SELECT * FROM logtbl WHERE sect = 1 ORDER BY sect,test;
sect test count
1 1 183
1 2 3
**** On Slave ****
SELECT * FROM logtbl WHERE sect = 1 ORDER BY sect,test;
sect test count
1 1 183
1 2 3
==== 1.2. Stored procedure ====
**** On Master ****
CREATE PROCEDURE calc_and_log(sect INT, test INT) BEGIN
DECLARE cnt INT;
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a < 5 ORDER BY a LIMIT 1;
SELECT FOUND_ROWS() INTO cnt;
INSERT INTO logtbl VALUES(sect,test,cnt);
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
SELECT FOUND_ROWS() INTO cnt;
INSERT INTO logtbl VALUES(sect,test+1,cnt);
END $$
CALL calc_and_log(2,1);
a
1
a
7
CREATE PROCEDURE just_log(sect INT, test INT, found_rows INT) BEGIN
INSERT INTO logtbl VALUES (sect,test,found_rows);
END $$
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
SELECT FOUND_ROWS() INTO @found_rows;
CALL just_log(2,3,@found_rows);
SELECT * FROM logtbl WHERE sect = 2 ORDER BY sect,test;
sect test count
2 1 3
2 2 183
2 3 183
**** On Slave ****
SELECT * FROM logtbl WHERE sect = 2 ORDER BY sect,test;
sect test count
2 1 3
2 2 183
2 3 183
==== 1.3. Stored functions ====
**** On Master ****
CREATE FUNCTION log_rows(sect INT, test INT, found_rows INT)
RETURNS INT
BEGIN
INSERT INTO logtbl VALUES(sect,test,found_rows);
RETURN found_rows;
END $$
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
SELECT FOUND_ROWS() INTO @found_rows;
SELECT log_rows(3,1,@found_rows), log_rows(3,2,@found_rows);
log_rows(3,1,@found_rows) log_rows(3,2,@found_rows)
183 183
SELECT * FROM logtbl WHERE sect = 3 ORDER BY sect,test;
sect test count
3 1 183
3 2 183
**** On Slave ****
SELECT * FROM logtbl WHERE sect = 3 ORDER BY sect,test;
sect test count
3 1 183
3 2 183
==== 1.9. Cleanup ====
**** On Master ****
DELETE FROM logtbl;
DROP PROCEDURE just_log;
DROP PROCEDURE calc_and_log;
DROP FUNCTION log_rows;
**** Resetting master and slave ****
STOP SLAVE;
RESET SLAVE;
RESET MASTER;
START SLAVE;
#### 2. Using mixed mode ####
==== 2.1. Checking a procedure ====
**** On Master ****
SET BINLOG_FORMAT=MIXED;
CREATE PROCEDURE just_log(sect INT, test INT) BEGIN
INSERT INTO logtbl VALUES (sect,test,FOUND_ROWS());
END $$
**** On Master 1 ****
SET BINLOG_FORMAT=MIXED;
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
CALL just_log(1,1);
**** On Master ****
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
CALL just_log(1,2);
**** On Master 1 ****
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a < 5 ORDER BY a LIMIT 1;
a
1
CALL just_log(1,3);
**** On Master ****
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
CALL just_log(1,4);
SELECT * FROM logtbl WHERE sect = 1 ORDER BY sect,test;
sect test count
1 1 183
1 2 183
1 3 3
1 4 183
**** On Slave ****
SELECT * FROM logtbl WHERE sect = 1 ORDER BY sect,test;
sect test count
1 1 183
1 2 183
1 3 3
1 4 183
==== 2.1. Checking a stored function ====
**** On Master ****
CREATE FUNCTION log_rows(sect INT, test INT)
RETURNS INT
BEGIN
DECLARE found_rows INT;
SELECT FOUND_ROWS() INTO found_rows;
INSERT INTO logtbl VALUES(sect,test,found_rows);
RETURN found_rows;
END $$
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a < 5 ORDER BY a LIMIT 1;
a
1
SELECT log_rows(2,1), log_rows(2,2);
log_rows(2,1) log_rows(2,2)
3 3
CREATE TABLE t2 (a INT, b INT);
CREATE TRIGGER t2_tr BEFORE INSERT ON t2 FOR EACH ROW
BEGIN
INSERT INTO logtbl VALUES (NEW.a, NEW.b, FOUND_ROWS());
END $$
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a < 5 ORDER BY a LIMIT 1;
a
1
INSERT INTO t2 VALUES (2,3), (2,4);
DROP TRIGGER t2_tr;
CREATE TRIGGER t2_tr BEFORE INSERT ON t2 FOR EACH ROW
BEGIN
DECLARE dummy INT;
SELECT log_rows(NEW.a, NEW.b) INTO dummy;
END $$
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
INSERT INTO t2 VALUES (2,5), (2,6);
DROP TRIGGER t2_tr;
CREATE PROCEDURE log_me_inner(sect INT, test INT)
BEGIN
DECLARE dummy INT;
SELECT log_rows(sect, test) INTO dummy;
SELECT log_rows(sect, test+1) INTO dummy;
END $$
CREATE PROCEDURE log_me(sect INT, test INT)
BEGIN
CALL log_me_inner(sect,test);
END $$
CREATE TRIGGER t2_tr BEFORE INSERT ON t2 FOR EACH ROW
BEGIN
CALL log_me(NEW.a, NEW.b);
END $$
SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a > 5 ORDER BY a LIMIT 1;
a
7
INSERT INTO t2 VALUES (2,5), (2,6);
SELECT * FROM logtbl WHERE sect = 2 ORDER BY sect,test;
sect test count
2 1 3
2 2 3
2 3 3
2 4 3
2 5 183
2 5 183
2 6 183
2 6 0
2 6 183
2 7 0
SELECT * FROM logtbl WHERE sect = 2 ORDER BY sect,test;
sect test count
2 1 3
2 2 3
2 3 3
2 4 3
2 5 183
2 5 183
2 6 183
2 6 0
2 6 183
2 7 0
DROP TABLE t1, t2, logtbl;
DROP PROCEDURE just_log;
DROP PROCEDURE log_me;
DROP PROCEDURE log_me_inner;
DROP FUNCTION log_rows;