diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 1af34b6be2..68668ce78b 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -455,6 +455,9 @@ Release 2.1.0-beta - 2013-07-02
     HADOOP-9416.  Add new symlink resolution methods in FileSystem and
     FileSystemLinkResolver.  (Andrew Wang via Colin Patrick McCabe)
 
+    HADOOP-9720. Rename Client#uuid to Client#clientId. (Arpit Agarwal via
+    suresh)
+
   OPTIMIZATIONS
 
     HADOOP-9150. Avoid unnecessary DNS resolution attempts for logical URIs
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
index 595c1eb990..7d66066d10 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
@@ -115,7 +115,7 @@ public class Client {
   private final int connectionTimeout;
 
   private final boolean fallbackAllowed;
-  private final byte[] uuid;
+  private final byte[] clientId;
   
   /**
    * Executor on which IPC calls' parameters are sent. Deferring
@@ -891,7 +891,7 @@ public void sendRpcRequest(final Call call)
       // Items '1' and '2' are prepared here. 
       final DataOutputBuffer d = new DataOutputBuffer();
       RpcRequestHeaderProto header = ProtoUtil.makeRpcRequestHeader(
-         call.rpcKind, OperationProto.RPC_FINAL_PACKET, call.id, uuid);
+         call.rpcKind, OperationProto.RPC_FINAL_PACKET, call.id, clientId);
       header.writeDelimitedTo(d);
       call.rpcRequest.write(d);
 
@@ -1091,7 +1091,7 @@ public Client(Class<? extends Writable> valueClass, Configuration conf,
         CommonConfigurationKeys.IPC_CLIENT_CONNECT_TIMEOUT_DEFAULT);
     this.fallbackAllowed = conf.getBoolean(CommonConfigurationKeys.IPC_CLIENT_FALLBACK_TO_SIMPLE_AUTH_ALLOWED_KEY,
         CommonConfigurationKeys.IPC_CLIENT_FALLBACK_TO_SIMPLE_AUTH_ALLOWED_DEFAULT);
-    this.uuid = StringUtils.getUuidBytes();
+    this.clientId = StringUtils.getUuidBytes();
   }
 
   /**