diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 00435d4ebbd..d053580d8a4 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -597,6 +597,9 @@ Release 2.0.3-alpha - Unreleased
     HDFS-4295. Using port 1023 should be valid when starting Secure DataNode
     (Stephen Chu via todd)
 
+    HDFS-4294. Backwards compatibility is not maintained for TestVolumeId.
+    (Ivan A. Veselovsky and Robert Parker via atm)
+
   BREAKDOWN OF HDFS-3077 SUBTASKS
 
     HDFS-3077. Quorum-based protocol for reading and writing edit logs.
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestVolumeId.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestVolumeId.java
index da6f192a757..3584f21b1a4 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestVolumeId.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestVolumeId.java
@@ -51,7 +51,7 @@ public class TestVolumeId {
   }
   
   @SuppressWarnings("unchecked")
-  private <T> void testEq(final boolean eq, Comparable<? super T> id1, Comparable<? super T> id2) {
+  private <T> void testEq(final boolean eq, Comparable<T> id1, Comparable<T> id2) {
     final int h1 = id1.hashCode();
     final int h2 = id2.hashCode();
     
@@ -99,8 +99,8 @@ public class TestVolumeId {
   }
   
   @SuppressWarnings("unchecked")
-  private <T> void testEqMany(final boolean eq, Comparable<? super T>... volumeIds) {
-    Comparable<? super T> vidNext;
+  private <T> void testEqMany(final boolean eq, Comparable<T>... volumeIds) {
+    Comparable<T> vidNext;
     int sum = 0;
     for (int i=0; i<volumeIds.length; i++) {
       if (i == volumeIds.length - 1) {