Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/4173#discussion_r23657338 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/api.scala --- @@ -0,0 +1,289 @@ +/* +* Licensed to the Apache Software Foundation (ASF) under one or more +* contributor license agreements. See the NOTICE file distributed with +* this work for additional information regarding copyright ownership. +* The ASF licenses this file to You under the Apache License, Version 2.0 +* (the "License"); you may not use this file except in compliance with +* the License. You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +package org.apache.spark.sql + +import scala.reflect.ClassTag + +import org.apache.spark.annotation.Experimental +import org.apache.spark.api.java.JavaRDD +import org.apache.spark.rdd.RDD +import org.apache.spark.sql.types.{DataType, StructType} +import org.apache.spark.storage.StorageLevel + + +/** + * An internal interface defining the RDD-like methods for [[DataFrame]]. + * Please use [[DataFrame]] directly, and do NOT use this. + */ +trait RDDApi[T] { --- End diff -- but i will add the restriction anyway
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