apache/spark — pull request #3063 by marmbrus (2014-11-02 23:58:26+00:00)
Title: [SPARK-3572] [SQL] Internal API for User-Defined Types

This PR adds User-Defined Types (UDTs) to SQL. It is a precursor to using SchemaRDD as a Dataset for the new MLlib API. Currently, the UDT API is private since there is incomplete support (e.g., no Java or Python support yet).