merge from mysql-5.1 -> mysql-5.5

parents 500d2ebe 77996020
use test;
drop table if exists t1;
create table t1 (id int primary key, value int, value2 int,
value3 int, index(value,value2)) engine=innodb;
insert into t1 values
(10,10,10,10),(11,11,11,11),(12,12,12,12),(13,13,13,13),(14,14,14,14),
(15,15,15,15),(16,16,16,16),(17,17,17,17),(18,18,18,18),(19,19,19,19),
(20,20,20,20);
use test;
start transaction with consistent snapshot;
use test;
CREATE PROCEDURE update_t1()
BEGIN
DECLARE i INT DEFAULT 1;
while (i <= 5000) DO
update test.t1 set value2=value2+1, value3=value3+1 where id=12;
SET i = i + 1;
END WHILE;
END|
set autocommit=0;
CALL update_t1();
select * from t1;
id value value2 value3
10 10 10 10
11 11 11 11
12 12 5012 5012
13 13 13 13
14 14 14 14
15 15 15 15
16 16 16 16
17 17 17 17
18 18 18 18
19 19 19 19
20 20 20 20
set autocommit=1;
select * from t1;
id value value2 value3
10 10 10 10
11 11 11 11
12 12 5012 5012
13 13 13 13
14 14 14 14
15 15 15 15
16 16 16 16
17 17 17 17
18 18 18 18
19 19 19 19
20 20 20 20
select * from t1 force index(value) where value=12;
kill query @id;
ERROR 70100: Query execution was interrupted
drop procedure if exists update_t1;
drop table if exists t1;
--source include/have_innodb.inc
#
# create test-bed to run test
#
use test;
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (id int primary key, value int, value2 int,
value3 int, index(value,value2)) engine=innodb;
insert into t1 values
(10,10,10,10),(11,11,11,11),(12,12,12,12),(13,13,13,13),(14,14,14,14),
(15,15,15,15),(16,16,16,16),(17,17,17,17),(18,18,18,18),(19,19,19,19),
(20,20,20,20);
let $ID= `SELECT @id := CONNECTION_ID()`;
#
# we need multiple connections as we need to keep one connection
# active with trx requesting consistent read.
#
connect (conn1, localhost, root,,);
connect (conn2, localhost, root,,);
connect (conn3, localhost, root,,);
#
# start trx with consistent read
#
connection conn1;
use test;
start transaction with consistent snapshot;
#
# update table such that secondary index is updated.
#
connection conn2;
use test;
delimiter |;
CREATE PROCEDURE update_t1()
BEGIN
DECLARE i INT DEFAULT 1;
while (i <= 5000) DO
update test.t1 set value2=value2+1, value3=value3+1 where id=12;
SET i = i + 1;
END WHILE;
END|
delimiter ;|
set autocommit=0;
CALL update_t1();
select * from t1;
set autocommit=1;
select * from t1;
#
# Now try to fire select query from connection-1 enforcing
# use of secondary index.
#
connection conn1;
let $ID= `SELECT @id := CONNECTION_ID()`;
#--error ER_QUERY_INTERRUPTED
--send
select * from t1 force index(value) where value=12;
#
# select is going to take good time so let's kill query.
#
connection conn3;
let $wait_condition=
select * from information_schema.processlist where state = 'Sending data' and
info = 'select * from t1 force index(value) where value=12';
--source include/wait_condition.inc
let $ignore= `SELECT @id := $ID`;
kill query @id;
#
# reap the value of connection-1
#
connection conn1;
--error ER_QUERY_INTERRUPTED
reap;
#
# clean test-bed.
#
connection default;
disconnect conn1;
disconnect conn2;
disconnect conn3;
drop procedure if exists update_t1;
drop table if exists t1;
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment