mariadb/mysql-test/suite/tokudb/t/mvcc-5.test

# verify that repeatable read uses one snapshot, whereas read committed keeps taking new ones

#--source include/have_tokudb.inc
SET DEFAULT_STORAGE_ENGINE = 'tokudb';
set session transaction isolation level repeatable read;

--echo # Establish connection conn1 (user = root)
connect (conn1,localhost,root,,);
connect (conn2,localhost,root,,);

--disable_warnings
DROP TABLE IF EXISTS foo;
--enable_warnings

create table foo (a int, b int, primary key (a))engine=TokuDB;
show create table foo;
insert into foo values (1,1);

connection conn1;
set session transaction isolation level repeatable read;
begin;
--echo # Should read just (1,1)
select * from foo;

connection conn2;
set session transaction isolation level read committed;
begin;
--echo # Should read just (1,1)
select * from foo;

connection default;
replace into foo values (1,10),(2,20);

connection conn1;
--echo # Should read just (1,1)
select * from foo;

connection conn2;
--echo # Should read just (1,10), (2,20)
select * from foo;

connection default;
replace into foo values (1,100),(2,200),(3,300);

connection conn1;
--echo # Should read just (1,1)
select * from foo;
commit;

connection conn2;
--echo # Should read just (1,100), (2,200),(3,300)
select * from foo;
commit;

connection default;
disconnect conn1;
disconnect conn2;

connection default;
# Final cleanup.
set session transaction isolation level serializable;
DROP TABLE foo;