1SET DEFAULT_STORAGE_ENGINE='tokudb';
2drop table if exists t;
3create table t (a int primary key, b int);
4insert into t values (1,0);
5set session transaction isolation level serializable;
6begin;
7select * from t where a=1 for update;
8a	b
91	0
10update t set b=b+1 where a=1;
11connect conn1,localhost,root;
12set session transaction isolation level serializable;
13begin;
14select * from t where a=1 for update;
15connection default;
16commit;
17connection conn1;
18a	b
191	1
20update t set b=b+1 where a=1;
21select * from t;
22a	b
231	2
24commit;
25connection default;
26disconnect conn1;
27drop table t;
28