Scalar fail if the scalar variable is generated by limit
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Key: PIG-1636
URL: https://issues.apache.org/jira/browse/PIG-1636
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.8.0
Reporter: Daniel Dai
Assignee: Daniel Dai
Fix For: 0.8.0
The following script fail:
{code}
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';
{code}
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.
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