Github user sarutak commented on a diff in the pull request:
https://github.com/apache/spark/pull/2939#discussion_r19392296
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/RangeJoins.scala ---
@@ -0,0 +1,83 @@
+/*
+ * 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.execution
+
+import scala.collection.mutable.{ArrayBuffer, BitSet}
+
+
+import org.apache.spark.annotation.DeveloperApi
+import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.SQLContext
+
+
+
+@DeveloperApi
+case class RangeJoin(left: SparkPlan,
+ right: SparkPlan,
+ condition: Seq[Expression],
+ context: SQLContext) extends BinaryNode with
Serializable{
+ def output = left.output ++ right.output
+
+ lazy val (buildPlan, streamedPlan) = (left, right)
+
+ lazy val (buildKeys, streamedKeys) = (List(condition(0),condition(1)),
+ List(condition(2), condition(3)))
+
+ @transient lazy val buildKeyGenerator = new
InterpretedProjection(buildKeys, buildPlan.output)
+ @transient lazy val streamKeyGenerator = new
InterpretedProjection(streamedKeys,
+ streamedPlan.output)
+
+ def execute() = {
+
+ val v1 = left.execute()
+ val v1kv = v1.map(x => {
+ val v1Key = buildKeyGenerator(x)
+ (new Interval[Long](v1Key.apply(0).asInstanceOf[Long],
v1Key.apply(1).asInstanceOf[Long]),
+ x.copy() )
+ })
+
+ val v2 = right.execute()
+ val v2kv = v2.map(x => {
+ val v2Key = streamKeyGenerator(x)
+ (new Interval[Long](v2Key.apply(0).asInstanceOf[Long],
v2Key.apply(1).asInstanceOf[Long]),
+ x.copy() )
+ })
+
+ /*As we are going to collect v1 and build an interval tree on its
intervals,
+ make sure that its size is the smaller one.*/
+ assert(v1.count <= v2.count)
+
+
--- End diff --
extra new lines.
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