'union onschema' does not use create output with correct schema when udfs are
involved
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Key: PIG-1616
URL: https://issues.apache.org/jira/browse/PIG-1616
Project: Pig
Issue Type: Bug
Affects Versions: 0.8.0
Reporter: Thejas M Nair
Assignee: Thejas M Nair
Fix For: 0.8.0
'union onshcema' creates a merged schema based on the input schemas. It does
that in the queryparser, and at that stage the udf return type used is the
default return type. The actual return type for the udf is determined later in
the TypeCheckingVisitor using EvalFunc.getArgsToFuncMapping().
'union onschema' should use the final type for its input relation to create the
merged schema.
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