diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 5a985230b9..824e6474e7 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -502,6 +502,9 @@ Release 2.2.1 - UNRELEASED
     HADOOP-10110. hadoop-auth has a build break due to missing dependency.
     (Chuan Liu via arp)
 
+    HADOOP-9114. After defined the dfs.checksum.type as the NULL, write file and hflush will 
+    through java.lang.ArrayIndexOutOfBoundsException (Sathish via umamahesh)
+
 Release 2.2.0 - 2013-10-13
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSOutputSummer.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSOutputSummer.java
index 691fbfbd16..49c919af19 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSOutputSummer.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSOutputSummer.java
@@ -183,10 +183,13 @@ static public byte[] convertToByteStream(Checksum sum, int checksumSize) {
   }
 
   static byte[] int2byte(int integer, byte[] bytes) {
-    bytes[0] = (byte)((integer >>> 24) & 0xFF);
-    bytes[1] = (byte)((integer >>> 16) & 0xFF);
-    bytes[2] = (byte)((integer >>>  8) & 0xFF);
-    bytes[3] = (byte)((integer >>>  0) & 0xFF);
+    if (bytes.length != 0) {
+      bytes[0] = (byte) ((integer >>> 24) & 0xFF);
+      bytes[1] = (byte) ((integer >>> 16) & 0xFF);
+      bytes[2] = (byte) ((integer >>> 8) & 0xFF);
+      bytes[3] = (byte) ((integer >>> 0) & 0xFF);
+      return bytes;
+    }
     return bytes;
   }