Major Description
The following script fail:
a = load 'studenttab10k' as (name: chararray, age: int, gpa: float); b = group a all; c = foreach b generate SUM(a.age) as total; c1= limit c 1; d = foreach a generate name, age/(double)c1.total as d_sum; store d into '111';
The problem is we have a reference to c1 in d. In the optimizer, we push limit before foreach, d still reference to limit, and we get the wrong schema for the scalar.