1update  performance_schema.setup_instruments set enabled='YES' where name like '%innodb_temp%';
2update performance_schema.setup_consumers set enabled='YES';
3use test;
4CREATE TABLE `t1`(`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `name1` varchar(180) NOT NULL, `name2` varchar(180) DEFAULT NULL, `name3` varchar(180) DEFAULT NULL, `name4` varchar(180) DEFAULT NULL, PRIMARY KEY (`id`,`name1`(10)) ) engine=InnoDB;
5set @id:=0;
6insert into t1 values
7(@id:=@id+1,md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000))
8, (@id:=@id+1,md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000))
9, (@id:=@id+1,md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000))
10, (@id:=@id+1,md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000));
11insert into `t1`(`id`,`name1`,`name2`,`name3`,`name4`)
12select  @id:=@id+1,md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000),md5(rand()*1000000)  from
13`t1` k1, `t1` k2, `t1` k3, `t1` k4,`t1` k5,`t1` k6;
14create index i_dtyp_big on `t1`(name1) algorithm=inplace;
15select distinct object_name from performance_schema.events_waits_history_long where event_name like '%wait%io%file%innodb%innodb_temp_file%'
16and object_name like '%Innodb Merge Temp File%';
17object_name
18MYSQL_TEST_DIR#Innodb Merge Temp File
19drop table t1;
20