new LogicalSchema column prune code does not preserve type information for map
subfields
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Key: PIG-2051
URL: https://issues.apache.org/jira/browse/PIG-2051
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.10
Reporter: Woody Anderson
Assignee: Woody Anderson
Fix For: 0.10
current impl of ColumnPruneVisitor.visit ignores field type info and passes
type BYTEARRAY for all map fields.
the corrected type is pretty easy to fill in, especially since map field info
is only attempted 1 level deep.
i came across this b/c i utilize the type information in the pushProjection
call, and this was previously of the 'correct' type information, the change
over to LogicalSchema caused a regression.
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