MAPREDUCE-6338. MR AppMaster does not honor ephemeral port range. Contributed by Frank Nguyen.

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapred/TaskAttemptListenerImpl.java

@@ -134,15 +134,14 @@ public class TaskAttemptListenerImpl extends CompositeService
   protected void startRpcServer() {
     Configuration conf = getConfig();
     try {
-      server = 
-          new RPC.Builder(conf).setProtocol(TaskUmbilicalProtocol.class)
-            .setInstance(this).setBindAddress("0.0.0.0")
-            .setPort(0).setNumHandlers(
-                conf.getInt(MRJobConfig.MR_AM_TASK_LISTENER_THREAD_COUNT, 
-                    MRJobConfig.DEFAULT_MR_AM_TASK_LISTENER_THREAD_COUNT))
-                    .setVerbose(false).setSecretManager(jobTokenSecretManager)
-                    .build();
-      
+      server = new RPC.Builder(conf).setProtocol(TaskUmbilicalProtocol.class)
+          .setInstance(this).setBindAddress("0.0.0.0")
+          .setPortRangeConfig(MRJobConfig.MR_AM_JOB_CLIENT_PORT_RANGE)
+          .setNumHandlers(
+          conf.getInt(MRJobConfig.MR_AM_TASK_LISTENER_THREAD_COUNT, 
+          MRJobConfig.DEFAULT_MR_AM_TASK_LISTENER_THREAD_COUNT))
+          .setVerbose(false).setSecretManager(jobTokenSecretManager).build();
+
       // Enable service authorization?
       if (conf.getBoolean(
           CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHORIZATION,