From c9e67dec15947c133fbe3813b71640f420315289 Mon Sep 17 00:00:00 2001
From: Gregory Owen <greowen@gmail.com>
Date: Mon, 18 Aug 2014 20:31:24 -0700
Subject: [PATCH] Made SpecificRow and types serializable by Kryo

---
 .../apache/spark/sql/catalyst/expressions/SpecificRow.scala   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/SpecificRow.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/SpecificRow.scala
index 2b0f351654774..cfb292a41dda7 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/SpecificRow.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/SpecificRow.scala
@@ -57,7 +57,7 @@ s"""
 }.foreach(println)
 }}}
  */
-abstract class MutableValue {
+abstract class MutableValue extends Serializable {
   var isNull: Boolean = true
   def boxed: Any
   def update(v: Any)
@@ -197,6 +197,8 @@ class SpecificMutableRow(val values: Array[MutableValue]) extends MutableRow {
         case _ => new MutableAny
       }.toArray)
 
+  def this() = this(Seq.empty)
+
   override def length: Int = values.length
 
   override def setNullAt(i: Int): Unit = {