diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index ac8c3be4b53..4dbe18e1c0c 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -139,6 +139,9 @@ Release 2.8.0 - UNRELEASED
 
     MAPREDUCE-6342. Make POM project names consistent. (Rohith via devaraj)
 
+    MAPREDUCE-3383. Duplicate job.getOutputValueGroupingComparator() in
+    ReduceTask (Binglin Chang via jlowe)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java
index c1391fa6feb..c90e38bfe9a 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java
@@ -436,7 +436,7 @@ public void collect(OUTKEY key, OUTVALUE value)
               comparator, keyClass, valueClass, 
               job, reporter, umbilical) :
           new ReduceValuesIterator<INKEY,INVALUE>(rIter, 
-          job.getOutputValueGroupingComparator(), keyClass, valueClass, 
+          comparator, keyClass, valueClass,
           job, reporter);
       values.informReduceProgress();
       while (values.more()) {