Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7456#discussion_r34864886
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/UnsafeRowSerializer.scala
---
@@ -0,0 +1,130 @@
+/*
+ * 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 java.io.{DataInputStream, DataOutputStream, OutputStream,
InputStream}
+import java.nio.ByteBuffer
+
+import scala.reflect.ClassTag
+
+import com.google.common.io.ByteStreams
+
+import org.apache.spark.serializer.{SerializationStream,
DeserializationStream, SerializerInstance, Serializer}
+import org.apache.spark.sql.catalyst.expressions.UnsafeRow
+import org.apache.spark.unsafe.PlatformDependent
+
+
+class UnsafeRowSerializer(numFields: Int) extends Serializer {
+ override def newInstance(): SerializerInstance = new
UnsafeRowSerializerInstance(numFields)
+ override private[spark] def supportsRelocationOfSerializedObjects:
Boolean = true
+}
+
+private class UnsafeRowSerializerInstance(numFields: Int) extends
SerializerInstance {
+
+ private[this] val EOF: Int = -1
+
+ override def serializeStream(out: OutputStream): SerializationStream =
new SerializationStream {
+ private[this] var writeBuffer: Array[Byte] = new Array[Byte](4096)
+ private[this] val dOut: DataOutputStream = new DataOutputStream(out)
+
+ override def writeValue[T: ClassTag](value: T): SerializationStream = {
+ val row = value.asInstanceOf[UnsafeRow]
+ assert(row.getPool == null, "UnsafeRowSerializer does not support
ObjectPool")
+ dOut.writeInt(row.getSizeInBytes)
+ println("Size in bytes is " + row.getSizeInBytes)
--- End diff --
make sure you remove this when it's merged (i guess our style checker will
fail anyway)
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