Yin Huai created SPARK-6367:
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Summary: Use the proper data type for those expressions that are
hijacking existing data types.
Key: SPARK-6367
URL: https://issues.apache.org/jira/browse/SPARK-6367
Project: Spark
Issue Type: Task
Components: SQL
Reporter: Yin Huai
For the following expressions, the actual value type does not match the type of
our internal representation.
ApproxCountDistinctPartition
NewSet
AddItemToSet
CombineSets
CollectHashSet
We should create UDTs for data types of these expressions.
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