implement typechecking and lineage tracking on new logical plan
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Key: PIG-1847
URL: https://issues.apache.org/jira/browse/PIG-1847
Project: Pig
Issue Type: Task
Affects Versions: 0.8.0
Reporter: Thejas M Nair
Assignee: Thejas M Nair
Fix For: 0.9.0
In 0.8, TypeCheckingVisitor works on the old logical plan, before it is
translated to new logical plan. The TypeCheckingVisitor checks the types in
expressions, adds casts and tracks lineage for identifying which load
function's LoadCaster interface is to be used to convert bytearrays into other
types.
As the old logical plan is going away in 0.9, this functionality needs to be
added for new plan.
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