[SPARK-2179][SQL] Public API for DataTypes and Schema

core/src/main/scala/org/apache/spark/api/python/PythonRDD.scala

@@ -544,7 +544,8 @@ private[spark] object PythonRDD extends Logging {
   }
 
   /**
-   * Convert an RDD of serialized Python dictionaries to Scala Maps
+   * Convert an RDD of serialized Python dictionaries to Scala Maps (no recursive conversions).
+   * It is only used by pyspark.sql.
    * TODO: Support more Python types.
    */
   def pythonToJavaMap(pyRDD: JavaRDD[Array[Byte]]): JavaRDD[Map[String, _]] = {

project/SparkBuild.scala

@@ -312,7 +312,7 @@ object Unidoc {
         "mllib.regression", "mllib.stat", "mllib.tree", "mllib.tree.configuration",
         "mllib.tree.impurity", "mllib.tree.model", "mllib.util"
       ),
-      "-group", "Spark SQL", packageList("sql.api.java", "sql.hive.api.java"),
+      "-group", "Spark SQL", packageList("sql.api.java", "sql.api.java.types", "sql.hive.api.java"),
       "-noqualifier", "java.lang"
     )
   )