Cross join in Myria is broken.

T1 = scan(TwitterK);
T2 = scan(Iris);
t3 = [from T1,T2 emit T1.a, T1.b, T2.class];
store (t3, joined);
 try the query above,  the number of tuples is correct, but the same two tuples are repeated over and over again.

This is a regression, this used to work