svn merge -c 1189355 from trunk for HDFS-2411.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1189505 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -1120,6 +1120,9 @@ Release 0.23.0 - Unreleased
     getDefaultBlockSize() and getDefaultReplication() in WebHdfsFileSystem
     and cleared content type in ExceptionHandler.  (szetszwo)
 
+    HDFS-2411. The the auth to local mappings are not being respected, with 
+    webhdfs enabled. (jitendra)
+
   BREAKDOWN OF HDFS-1073 SUBTASKS
 
     HDFS-1521. Persist transaction ID on disk between NN restarts.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeHttpServer.java

@@ -141,8 +141,6 @@ public class NameNodeHttpServer {
                     DFSConfigKeys.DFS_WEB_AUTHENTICATION_KERBEROS_KEYTAB_KEY,
                     httpKeytab);
               }
-              params.put("kerberos.name.rules",
-                  conf.get("hadoop.security.auth_to_local", "DEFAULT"));
               return params;
             }
           };