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--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;
|
