diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index bd8820178eb..ce5d2159487 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -67,6 +67,9 @@ Release 2.5.0 - UNRELEASED
     HADOOP-10500. TestDoAsEffectiveUser fails on JDK7 due to failure to reset
     proxy user configuration. (cnauroth)
 
+    HADOOP-10499. Remove unused parameter from ProxyUsers.authorize().
+    (Benoy Antony via cnauroth)
+
 Release 2.4.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
index 7fb62f11212..a2a7c9f77e8 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
@@ -1897,7 +1897,7 @@ public abstract class Server {
         // authentication
         if (user != null && user.getRealUser() != null
             && (authMethod != AuthMethod.TOKEN)) {
-          ProxyUsers.authorize(user, this.getHostAddress(), conf);
+          ProxyUsers.authorize(user, this.getHostAddress());
         }
         authorize(user, protocolName, getHostInetAddress());
         if (LOG.isDebugEnabled()) {
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/ProxyUsers.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/ProxyUsers.java
index 00f78d4f36a..5d2891ce62d 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/ProxyUsers.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/ProxyUsers.java
@@ -129,11 +129,10 @@ public class ProxyUsers {
    * 
    * @param user ugi of the effective or proxy user which contains a real user
    * @param remoteAddress the ip address of client
-   * @param newConf configuration
    * @throws AuthorizationException
    */
   public static synchronized void authorize(UserGroupInformation user, 
-      String remoteAddress, Configuration newConf) throws AuthorizationException {
+      String remoteAddress) throws AuthorizationException {
 
     if(!init) {
       refreshSuperUserGroupsConfiguration(); 
diff --git a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/authorize/TestProxyUsers.java b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/authorize/TestProxyUsers.java
index e8986b1cc0d..869465a2228 100644
--- a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/authorize/TestProxyUsers.java
+++ b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/authorize/TestProxyUsers.java
@@ -182,7 +182,7 @@ public class TestProxyUsers {
 
   private void assertNotAuthorized(UserGroupInformation proxyUgi, String host) {
     try {
-      ProxyUsers.authorize(proxyUgi, host, null);
+      ProxyUsers.authorize(proxyUgi, host);
       fail("Allowed authorization of " + proxyUgi + " from " + host);
     } catch (AuthorizationException e) {
       // Expected
@@ -191,7 +191,7 @@ public class TestProxyUsers {
   
   private void assertAuthorized(UserGroupInformation proxyUgi, String host) {
     try {
-      ProxyUsers.authorize(proxyUgi, host, null);
+      ProxyUsers.authorize(proxyUgi, host);
     } catch (AuthorizationException e) {
       fail("Did not allowed authorization of " + proxyUgi + " from " + host);
     }
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java
index 1f6457f1a6d..9c7554e383f 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java
@@ -626,7 +626,7 @@ public class JspHelper {
       if (doAsUserFromQuery != null) {
         // create and attempt to authorize a proxy user
         ugi = UserGroupInformation.createProxyUser(doAsUserFromQuery, ugi);
-        ProxyUsers.authorize(ugi, getRemoteAddr(request), conf);
+        ProxyUsers.authorize(ugi, getRemoteAddr(request));
       }
     }
     
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/security/TestRefreshUserMappings.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/security/TestRefreshUserMappings.java
index 69ea582bfa7..df9462828be 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/security/TestRefreshUserMappings.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/security/TestRefreshUserMappings.java
@@ -179,14 +179,14 @@ public class TestRefreshUserMappings {
     
     // check before
     try {
-      ProxyUsers.authorize(ugi1, "127.0.0.1", config);
+      ProxyUsers.authorize(ugi1, "127.0.0.1");
       fail("first auth for " + ugi1.getShortUserName() + " should've failed ");
     } catch (AuthorizationException e) {
       // expected
       System.err.println("auth for " + ugi1.getUserName() + " failed");
     }
     try {
-      ProxyUsers.authorize(ugi2, "127.0.0.1", config);
+      ProxyUsers.authorize(ugi2, "127.0.0.1");
       System.err.println("auth for " + ugi2.getUserName() + " succeeded");
       // expected
     } catch (AuthorizationException e) {
@@ -204,14 +204,14 @@ public class TestRefreshUserMappings {
     admin.run(args);
     
     try {
-      ProxyUsers.authorize(ugi2, "127.0.0.1", config);
+      ProxyUsers.authorize(ugi2, "127.0.0.1");
       fail("second auth for " + ugi2.getShortUserName() + " should've failed ");
     } catch (AuthorizationException e) {
       // expected
       System.err.println("auth for " + ugi2.getUserName() + " failed");
     }
     try {
-      ProxyUsers.authorize(ugi1, "127.0.0.1", config);
+      ProxyUsers.authorize(ugi1, "127.0.0.1");
       System.err.println("auth for " + ugi1.getUserName() + " succeeded");
       // expected
     } catch (AuthorizationException e) {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/server/TestHSAdminServer.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/server/TestHSAdminServer.java
index f31ebe3b123..277a1953c8e 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/server/TestHSAdminServer.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/server/TestHSAdminServer.java
@@ -173,7 +173,7 @@ public class TestHSAdminServer {
 
     Throwable th = null;
     try {
-      ProxyUsers.authorize(ugi, "127.0.0.1", conf);
+      ProxyUsers.authorize(ugi, "127.0.0.1");
     } catch (Exception e) {
       th = e;
     }
@@ -189,7 +189,7 @@ public class TestHSAdminServer {
     // resetting th
     th = null;
     try {
-      ProxyUsers.authorize(ugi, "127.0.0.1", conf);
+      ProxyUsers.authorize(ugi, "127.0.0.1");
     } catch (Exception e) {
       th = e;
     }
@@ -202,7 +202,7 @@ public class TestHSAdminServer {
     th = null;
 
     try {
-      ProxyUsers.authorize(ugi, "127.0.0.1", conf);
+      ProxyUsers.authorize(ugi, "127.0.0.1");
     } catch (Exception e) {
       th = e;
     }