getFieldSchema() in ExpressionOperators also sets up lineage information - this
can cause issues if getFieldSchema() is called too early
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Key: PIG-808
URL: https://issues.apache.org/jira/browse/PIG-808
Project: Pig
Issue Type: Bug
Affects Versions: 0.2.1
Reporter: Pradeep Kamath
Fix For: 0.3.0
See PIG-804 for a use case which exposes this bug. We should probably be
setting up lineage information outside getFieldSchema() through a visitor at a
point where we know it is safe - (just before TypeCheckingVisitor?).
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