Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/8953#discussion_r41454426
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/local/BinaryHashJoinNode.scala
---
@@ -0,0 +1,77 @@
+/*
+* 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.local
+
+import org.apache.spark.sql.SQLConf
+import org.apache.spark.sql.catalyst.InternalRow
+import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.execution.joins.{HashedRelation, BuildLeft,
BuildRight, BuildSide}
+
+/**
+ * A [[HashJoinNode]] that builds the [[HashedRelation]] according to the
value of
+ * `buildSide`. The actual work of this node is defined in
[[HashJoinNode]].
+ */
+case class BinaryHashJoinNode(
+ conf: SQLConf,
+ leftKeys: Seq[Expression],
+ rightKeys: Seq[Expression],
+ buildSide: BuildSide,
+ left: LocalNode,
+ right: LocalNode)
+ extends BinaryLocalNode(conf) with HashJoinNode {
+
+ protected override val (streamedNode, streamedKeys) = buildSide match {
+ case BuildLeft => (right, rightKeys)
+ case BuildRight => (left, leftKeys)
+ }
+
+ private val (buildNode, buildKeys) = buildSide match {
+ case BuildLeft => (left, leftKeys)
+ case BuildRight => (right, rightKeys)
+ }
+
+ override def output: Seq[Attribute] = left.output ++ right.output
+
+ private def buildSideKeyGenerator: Projection = {
+ // We are expecting the data types of buildKeys and streamedKeys are
the same.
+ assert(buildKeys.map(_.dataType) == streamedKeys.map(_.dataType))
+ if (isUnsafeMode) {
+ UnsafeProjection.create(buildKeys, buildNode.output)
+ } else {
+ newMutableProjection(buildKeys, buildNode.output)()
+ }
+ }
+
+ protected override def doOpen(): Unit = {
+ // buildNode's prepare has been called in this.prepare.
--- End diff --
probably don't need this comment? We generally don't call `prepare` in
`open` I don't think
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
