From 622ad03f544e7e42c118b512dbb31fcf12602bab Mon Sep 17 00:00:00 2001
From: Cheng Hao <hao.cheng@intel.com>
Date: Fri, 19 Dec 2014 05:47:20 -0800
Subject: [PATCH] Remove the unnecessary code change in Generic UDF

---
 .../src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala
index 93b6ef9fbc59b..7d863f9d89dae 100644
--- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala
+++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUdfs.scala
@@ -158,11 +158,6 @@ private[hive] case class HiveGenericUdf(funcWrapper: HiveFunctionWrapper, childr
   override def foldable =
     isUDFDeterministic && returnInspector.isInstanceOf[ConstantObjectInspector]
 
-  @transient
-  protected def constantReturnValue = unwrap(
-    returnInspector.asInstanceOf[ConstantObjectInspector].getWritableConstantValue(),
-    returnInspector)
-  
   @transient
   protected lazy val deferedObjects =
     argumentInspectors.map(new DeferredObjectAdapter(_)).toArray[DeferredObject]
@@ -171,7 +166,6 @@ private[hive] case class HiveGenericUdf(funcWrapper: HiveFunctionWrapper, childr
 
   override def eval(input: Row): Any = {
     returnInspector // Make sure initialized.
-    if(foldable) return constantReturnValue
 
     var i = 0
     while (i < children.length) {