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1bbb55a260
Problem is that these tests run with --innodb-lock-wait-timeout=2 in .opt (and this is necessary as built-in innodb does not allow to change this dynamically). This cases another part of the test to occasionally time out an UPDATE, which subsequently caused the test case to timeout due to waiting for a condition (successful UPDATE) that never occurs. Fixed by re-trying the update in case of timeout. Tested by inserting a sleep() in the connection that the UPDATE is waiting for, and checking that the retry loops a couple of times until the other connection is done and COMMITs.
139 lines
3.2 KiB
Text
139 lines
3.2 KiB
Text
drop table if exists t1;
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set binlog_format=mixed;
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set session transaction isolation level repeatable read;
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create table t1(a int not null)
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engine=innodb
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DEFAULT CHARSET=latin1
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PARTITION BY RANGE(a)
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(PARTITION p0 VALUES LESS THAN (20),
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PARTITION p1 VALUES LESS THAN MAXVALUE);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7);
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set autocommit=0;
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select * from t1 where a=3 lock in share mode;
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a
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3
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set binlog_format=mixed;
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set session transaction isolation level repeatable read;
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set autocommit=0;
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update t1 set a=10 where a=5;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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commit;
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set session transaction isolation level read committed;
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update t1 set a=10 where a=5;
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select * from t1 where a=2 for update;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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select * from t1 where a=2 limit 1 for update;
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a
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2
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update t1 set a=11 where a=6;
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update t1 set a=12 where a=2;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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update t1 set a=13 where a=1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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commit;
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update t1 set a=14 where a=1;
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commit;
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select * from t1;
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a
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10
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11
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14
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2
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3
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4
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7
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drop table t1;
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SET SESSION AUTOCOMMIT = 0;
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SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
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set binlog_format=mixed;
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# Switch to connection con1
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CREATE TABLE t1 (a INT PRIMARY KEY, b VARCHAR(256))
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ENGINE = InnoDB
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PARTITION BY RANGE (a)
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(PARTITION p0 VALUES LESS THAN (300),
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PARTITION p1 VALUES LESS THAN MAXVALUE);
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INSERT INTO t1 VALUES (1,2);
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# 1. test for locking:
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BEGIN;
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UPDATE t1 SET b = 12 WHERE a = 1;
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affected rows: 1
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info: Rows matched: 1 Changed: 1 Warnings: 0
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SELECT * FROM t1;
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a b
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1 12
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# Switch to connection con2
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UPDATE t1 SET b = 21 WHERE a = 1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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# Switch to connection con1
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SELECT * FROM t1;
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a b
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1 12
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ROLLBACK;
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# 2. test for serialized update:
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CREATE TABLE t2 (a INT);
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TRUNCATE t1;
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INSERT INTO t1 VALUES (1,'init');
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CREATE PROCEDURE p1()
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BEGIN
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# retry the UPDATE in case it times out the lock before con1 has time
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# to COMMIT.
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DECLARE do_retry INT DEFAULT 0;
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DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET do_retry = 1;
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retry_loop:LOOP
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UPDATE t1 SET b = CONCAT(b, '+con2') WHERE a = 1;
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IF do_retry = 0 THEN
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LEAVE retry_loop;
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END IF;
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SET do_retry = 0;
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END LOOP;
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INSERT INTO t2 VALUES ();
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END|
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BEGIN;
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UPDATE t1 SET b = CONCAT(b, '+con1') WHERE a = 1;
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affected rows: 1
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info: Rows matched: 1 Changed: 1 Warnings: 0
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SELECT * FROM t1;
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a b
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1 init+con1
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# Switch to connection con2
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CALL p1;;
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# Switch to connection con1
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SELECT * FROM t1;
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a b
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1 init+con1
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COMMIT;
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SELECT * FROM t1;
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a b
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1 init+con1
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# Switch to connection con2
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SELECT * FROM t1;
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a b
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1 init+con1+con2
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# Switch to connection con1
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# 3. test for updated key column:
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TRUNCATE t1;
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TRUNCATE t2;
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INSERT INTO t1 VALUES (1,'init');
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BEGIN;
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UPDATE t1 SET a = 2, b = CONCAT(b, '+con1') WHERE a = 1;
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affected rows: 1
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info: Rows matched: 1 Changed: 1 Warnings: 0
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SELECT * FROM t1;
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a b
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2 init+con1
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# Switch to connection con2
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CALL p1;;
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# Switch to connection con1
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SELECT * FROM t1;
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a b
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2 init+con1
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COMMIT;
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SELECT * FROM t1;
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a b
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2 init+con1
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# Switch to connection con2
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SELECT * FROM t1;
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a b
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2 init+con1
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DROP PROCEDURE p1;
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DROP TABLE t1, t2;
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