YARN-4515. [YARN-3368] Support hosting web UI framework inside YARN RM. (Sunil G via wangda)

YARN-5000. [YARN-3368] App attempt page is not loading when timeline server is not started (Sunil G via wangda) YARN-5038. [YARN-3368] Application and Container pages shows wrong values when RM is stopped. (Sunil G via wangda)
2016-05-17 22:28:24 -07:00 · 2016-05-17 22:28:24 -07:00 · c85cc3b56e
parent 2c4f164e16
commit c85cc3b56e
47 changed files with 486 additions and 93 deletions
--- a/LICENSE.txt
+++ b/LICENSE.txt
@ -2328,6 +2328,7 @@ The Apache Hadoop YARN Web UI component bundles the following files under the MI
 - datatables v1.10.8 (https://datatables.net/)
 - moment v2.10.6 (http://momentjs.com/) - Copyright (c) 2011-2015 Tim Wood, Iskren Chernev, Moment.js contributors
 - em-helpers v0.5.8 (https://github.com/sreenaths/em-helpers)
+ - ember-array-contains-helper v1.0.2 (https://github.com/bmeurant/ember-array-contains-helper)
 - ember-cli-app-version v0.5.8 (https://github.com/EmberSherpa/ember-cli-app-version) - Authored by Taras Mankovski <tarasm@gmail.com>
 - ember-cli-babel v5.1.6 (https://github.com/babel/ember-cli-babel) - Authored by Stefan Penner <stefan.penner@gmail.com>
 - ember-cli-content-security-policy v0.4.0 (https://github.com/rwjblue/ember-cli-content-security-policy)
@ -2341,6 +2342,7 @@ The Apache Hadoop YARN Web UI component bundles the following files under the MI
 - ember-cli-sri v1.2.1 (https://github.com/jonathanKingston/ember-cli-sri) - Authored by Jonathan Kingston
 - ember-cli-uglify v1.2.0 (github.com/ember-cli/ember-cli-uglify) - Authored by Robert Jackson <me@rwjblue.com>
 - ember-d3 v0.1.0 (https://github.com/brzpegasus/ember-d3) - Authored by Estelle DeBlois
+ - ember-truth-helpers v1.2.0 (https://github.com/jmurphyau/ember-truth-helpers)
 - select2 v4.0.0 (https://select2.github.io/)

 All rights reserved.
--- a/hadoop-assemblies/src/main/resources/assemblies/hadoop-yarn-dist.xml
+++ b/hadoop-assemblies/src/main/resources/assemblies/hadoop-yarn-dist.xml
@ -192,6 +192,13 @@
      <directory>${project.build.directory}/site</directory>
      <outputDirectory>/share/doc/hadoop/${hadoop.component}</outputDirectory>
    </fileSet>
+      <fileSet>
+      <directory>hadoop-yarn/hadoop-yarn-ui/target/hadoop-yarn-ui-${project.version}</directory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/webapps/rm</outputDirectory>
+      <includes>
+        <include>**/*</include>
+      </includes>
+    </fileSet>
  </fileSets>
  <moduleSets>
    <moduleSet>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
@ -263,6 +263,29 @@ public class YarnConfiguration extends Configuration {
  public static final String DEFAULT_RM_WEBAPP_HTTPS_ADDRESS = "0.0.0.0:"
      + DEFAULT_RM_WEBAPP_HTTPS_PORT;

+  /**
+   * Enable YARN WebApp V2.
+   */
+  public static final String RM_WEBAPP_UI2_ENABLE = RM_PREFIX
+      + "webapp.ui2.enable";
+  public static final boolean DEFAULT_RM_WEBAPP_UI2_ENABLE = false;
+
+  /** The address of the RM web ui2 application. */
+  public static final String RM_WEBAPP_UI2_ADDRESS = RM_PREFIX
+      + "webapp.ui2.address";
+
+  public static final int DEFAULT_RM_WEBAPP_UI2_PORT = 8288;
+  public static final String DEFAULT_RM_WEBAPP_UI2_ADDRESS = "0.0.0.0:" +
+      DEFAULT_RM_WEBAPP_UI2_PORT;
+  
+  /** The https address of the RM web ui2 application.*/
+  public static final String RM_WEBAPP_UI2_HTTPS_ADDRESS =
+      RM_PREFIX + "webapp.ui2.https.address";
+
+  public static final int DEFAULT_RM_WEBAPP_UI2_HTTPS_PORT = 8290;
+  public static final String DEFAULT_RM_WEBAPP_UI2_HTTPS_ADDRESS = "0.0.0.0:"
+      + DEFAULT_RM_WEBAPP_UI2_HTTPS_PORT;
+
  public static final String RM_RESOURCE_TRACKER_ADDRESS =
    RM_PREFIX + "resource-tracker.address";
  public static final int DEFAULT_RM_RESOURCE_TRACKER_PORT = 8031;
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
@ -179,6 +179,32 @@
    <value>true</value>
  </property>

+  <property>
+    <description>To enable RM web ui2 application.</description>
+    <name>yarn.resourcemanager.webapp.ui2.enable</name>
+    <value>false</value>
+  </property>
+
+  <property>
+    <description>
+      The http address of the RM web ui2 application.
+      If only a host is provided as the value,
+      the webapp will be served on a random port.
+    </description>
+    <name>yarn.resourcemanager.webapp.ui2.address</name>
+    <value>${yarn.resourcemanager.hostname}:8288</value>
+  </property>
+
+  <property>
+    <description>
+      The https address of the RM web ui2 application.
+      If only a host is provided as the value,
+      the webapp will be served on a random port.
+    </description>
+    <name>yarn.resourcemanager.webapp.ui2.https.address</name>
+    <value>${yarn.resourcemanager.hostname}:8290</value>
+  </property>
+
  <property>
    <name>yarn.resourcemanager.resource-tracker.address</name>
    <value>${yarn.resourcemanager.hostname}:8031</value>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
@ -18,16 +18,6 @@

 package org.apache.hadoop.yarn.server.resourcemanager;

-import java.io.IOException;
-import java.io.InputStream;
-import java.io.PrintStream;
-import java.net.InetSocketAddress;
-import java.nio.charset.Charset;
-import java.security.PrivilegedExceptionAction;
-import java.security.SecureRandom;
-import java.util.ArrayList;
-import java.util.List;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.curator.framework.AuthInfo;
@ -38,10 +28,12 @@ import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.ha.HAServiceProtocol;
 import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
+import org.apache.hadoop.http.HttpServer2;
 import org.apache.hadoop.http.lib.StaticUserWebFilter;
 import org.apache.hadoop.metrics2.MetricsSystem;
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
 import org.apache.hadoop.metrics2.source.JvmMetrics;
+import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.AuthenticationFilterInitializer;
 import org.apache.hadoop.security.Groups;
 import org.apache.hadoop.security.HttpCrossOriginFilterInitializer;
@ -124,6 +116,16 @@ import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
 import org.apache.zookeeper.server.auth.DigestAuthenticationProvider;

 import com.google.common.annotations.VisibleForTesting;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintStream;
+import java.net.InetSocketAddress;
+import java.net.URI;
+import java.nio.charset.Charset;
+import java.security.PrivilegedExceptionAction;
+import java.security.SecureRandom;
+import java.util.ArrayList;
+import java.util.List;

 /**
 * The ResourceManager is the main class that is a set of components.
@ -910,6 +912,48 @@ public class ResourceManager extends CompositeService implements Recoverable {
    }
  }

+  /**
+   * Return a HttpServer.Builder that the journalnode / namenode / secondary
+   * namenode can use to initialize their HTTP / HTTPS server.
+   *
+   */
+  public static HttpServer2.Builder httpServerTemplateForRM(Configuration conf,
+      final InetSocketAddress httpAddr, final InetSocketAddress httpsAddr,
+      String name) throws IOException {
+    HttpServer2.Builder builder = new HttpServer2.Builder().setName(name)
+        .setConf(conf).setSecurityEnabled(false);
+
+    if (httpAddr.getPort() == 0) {
+      builder.setFindPort(true);
+    }
+
+    URI uri = URI.create("http://" + NetUtils.getHostPortString(httpAddr));
+    builder.addEndpoint(uri);
+    LOG.info("Starting Web-server for " + name + " at: " + uri);
+
+    return builder;
+  }
+
+  protected void startWebAppV2() throws IOException {
+    Configuration config = getConfig();
+    final InetSocketAddress httpAddr = config.getSocketAddr(
+        YarnConfiguration.RM_WEBAPP_UI2_ADDRESS,
+        YarnConfiguration.DEFAULT_RM_WEBAPP_UI2_ADDRESS,
+        YarnConfiguration.DEFAULT_RM_WEBAPP_UI2_PORT);
+    final InetSocketAddress httpsAddr = config.getSocketAddr(
+        YarnConfiguration.RM_WEBAPP_UI2_HTTPS_ADDRESS,
+        YarnConfiguration.DEFAULT_RM_WEBAPP_UI2_HTTPS_ADDRESS,
+        YarnConfiguration.DEFAULT_RM_WEBAPP_UI2_HTTPS_PORT);
+
+    HttpServer2.Builder builder = httpServerTemplateForRM(config, httpAddr,
+        httpsAddr, "rm");
+
+    HttpServer2 infoServer = builder.build();
+    infoServer.start();
+
+    LOG.info("Web server init done");
+  }
+
  protected void startWepApp() {

    // Use the customized yarn filter instead of the standard kerberos filter to
@ -1128,6 +1172,16 @@ public class ResourceManager extends CompositeService implements Recoverable {
      transitionToActive();
    }

+    if (getConfig().getBoolean(YarnConfiguration.RM_WEBAPP_UI2_ENABLE,
+        YarnConfiguration.DEFAULT_RM_WEBAPP_UI2_ENABLE)) {
+      try {
+        startWebAppV2();
+        LOG.info("Yarn WebApp UI 2 is started");
+      } catch (Exception e) {
+        LOG.error("Failed to start Yarn web app v2:" + e.getMessage());
+      }
+    }
+
    startWepApp();
    if (getConfig().getBoolean(YarnConfiguration.IS_MINI_YARN_CLUSTER,
        false)) {
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/pom.xml
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/pom.xml
@ -20,12 +20,12 @@
  <parent>
    <artifactId>hadoop-yarn</artifactId>
    <groupId>org.apache.hadoop</groupId>
-    <version>3.0.0-SNAPSHOT</version>
+    <version>3.0.0-alpha1-SNAPSHOT</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.hadoop</groupId>
  <artifactId>hadoop-yarn-ui</artifactId>
-  <version>3.0.0-SNAPSHOT</version>
+  <version>3.0.0-alpha1-SNAPSHOT</version>
  <name>Apache Hadoop YARN UI</name>
  <packaging>${packaging.type}</packaging>

--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-app-attempt.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-app-attempt.js
@ -31,10 +31,8 @@ export default AbstractAdapter.extend({

  urlForFindRecord(id, modelName, snapshot) {
    var url = this._buildURL();
-    var url = url + '/apps/' + 
+    return url + '/apps/' +
           Converter.attemptIdToAppId(id) + "/appattempts/" + id;
-    console.log('app-attempt url:',url);
-    return url;
  }

 });
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-container-log.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-container-log.js
@ -42,7 +42,7 @@ export default DS.RESTAdapter.extend({
    var nodeHttpAddr = splits[0];
    var containerId = splits[1];
    var filename = splits[2];
-    this.host = this.host + nodeHttpAddr;
+    this.host = this.get('host') + nodeHttpAddr;
    var url = this._buildURL();
    url = url + "/containerlogs/" + containerId + "/" + filename;
    return url;
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-node-app.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-node-app.js
@ -25,14 +25,20 @@ export default AbstractAdapter.extend({
  serverName: "NM",

  urlForQuery(query) {
-    this.host = this.get("host") + query.nodeAddr;
+    var extension = this.get("host").split('/').pop();
+    if (extension != query.nodeAddr) {
+      this.host = this.get("host") + query.nodeAddr;
+    }
    var url = this._buildURL();
    url = url + "/apps";
    return url;
  },

  urlForQueryRecord: function (query) {
-    this.host = this.get("host")  + query.nodeAddr;
+    var extension = this.get("host").split('/').pop();
+    if (extension != query.nodeAddr) {
+      this.host = this.get("host") + query.nodeAddr;
+    }
    var url = this._buildURL();
    url = url + "/apps/" + query.appId;
    return url;
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-node-container.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-node-container.js
@ -25,14 +25,20 @@ export default AbstractAdapter.extend({
  serverName: "NM",

  urlForQuery(query) {
-    this.host = this.get("host") + query.nodeHttpAddr;
+    var extension = this.get("host").split('/').pop();
+    if (extension != query.nodeHttpAddr) {
+      this.host = this.get("host") + query.nodeHttpAddr;
+    }
    var url = this._buildURL();
    url = url + "/containers";
    return url;
  },

  urlForQueryRecord(query) {
-    this.host = this.get("host")  + query.nodeHttpAddr;
+    var extension = this.get("host").split('/').pop();
+    if (extension != query.nodeHttpAddr) {
+      this.host = this.get("host") + query.nodeHttpAddr;
+    }
    var url = this._buildURL();
    url = url + "/containers/" + query.containerId;
    return url;
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-node.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/yarn-node.js
@ -25,7 +25,10 @@ export default AbstractAdapter.extend({
  serverName: "NM",

  urlForFindRecord(id, modelName, snapshot) {
-    this.host = this.get("host") + id;
+    var extension = this.get("host").split('/').pop();
+    if (extension != id) {
+      this.host = this.get("host") + id;
+    }
    var url = this._buildURL();
    return url;
  },
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/components/timeline-view.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/components/timeline-view.js
@ -225,20 +225,29 @@ export default Ember.Component.extend({
  didInsertElement: function() {
    // init tooltip
    this.initTooltip();
+    this.modelArr = [];

    // init model
    if (this.get("rmModel")) {
      this.get("rmModel").forEach(function(o) {
-        this.modelArr.push(o);
+        if(!this.modelArr.contains(o)) {
+          this.modelArr.push(o);
+        }
      }.bind(this));
    }

    if (this.get("tsModel")) {
-     this.get("tsModel").forEach(function(o) {
-        this.modelArr.push(o);
+      this.get("tsModel").forEach(function(o) {
+        if(!this.modelArr.contains(o)) {
+          this.modelArr.push(o);
+        }
      }.bind(this));
    }

+    if(this.modelArr.length == 0) {
+      return;
+    }
+
    this.modelArr.sort(function(a, b) {
      var tsA = a.get("startTs");
      var tsB = b.get("startTs");
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/components/tree-selector.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/components/tree-selector.js
@ -126,7 +126,7 @@ export default Ember.Component.extend({
      .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
      .on("click", function(d,i){
        if (d.queueData.get("name") != this.get("selected")) {
-            document.location.href = "yarn-queue/" + d.queueData.get("name");
+            document.location.href = "#/yarn-queue/" + d.queueData.get("name");
        }
      }.bind(this));
      // .on("click", click);
@ -176,7 +176,7 @@ export default Ember.Component.extend({
      .attr("r", 20)
      .attr("href", 
        function(d) {
-          return "yarn-queues/" + d.queueData.get("name");
+          return "#/yarn-queues/" + d.queueData.get("name");
        })
      .style("stroke", function(d) {
        if (d.queueData.get("name") == this.get("selected")) {
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/log-files-comma.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/log-files-comma.js
@ -36,7 +36,7 @@ export default Ember.Helper.helper(function(params,hash) {
  var html = '<td>';
  var logFilesCommaSeparated = "";
  for (var i = 0; i < logFilesLen; i++) {
-    html = html + '<a href="yarn-container-log/' + nodeId + '/' +
+    html = html + '<a href="#/yarn-container-log/' + nodeId + '/' +
        nodeAddr + '/' + containerId + '/' + logFiles[i] + '">' + logFiles[i] +
        '</a>';
    if (i != logFilesLen - 1) {
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/node-link.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/node-link.js
@ -29,7 +29,7 @@ export default Ember.Helper.helper(function(params,hash) {
  if (nodeState == "SHUTDOWN" || nodeState == "LOST") {
    html = html + nodeHTTPAddress;
  } else {
-    html = html + '<a href="yarn-node/' + nodeId + "/" + nodeHTTPAddress + '">' +
+    html = html + '<a href="#/yarn-node/' + nodeId + "/" + nodeHTTPAddress + '">' +
        nodeHTTPAddress + '</a>';
  }
  html = html + '</td>';
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/node-menu.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/node-menu.js
@ -50,17 +50,17 @@ export default Ember.Helper.helper(function(params,hash) {
  if (hash.path == 'yarn-node') {
    html = html + ' class="active"';
  }
-  html = html + '><a href="yarn-node/' + hash.nodeId + '/' + hash.nodeAddr +
+  html = html + '><a href="#/yarn-node/' + hash.nodeId + '/' + hash.nodeAddr +
      '">Node Information</a></li><li';
  if (hash.path == 'yarn-node-apps') {
    html = html + ' class="active"';
  }
-  html = html + '><a href="yarn-node-apps/' + hash.nodeId + '/' + hash.nodeAddr +
+  html = html + '><a href="#/yarn-node-apps/' + hash.nodeId + '/' + hash.nodeAddr +
      '">List of Applications</a></li><li';
  if (hash.path == 'yarn-node-containers') {
    html = html + ' class="active"';
  }
-  html = html + '><a href="yarn-node-containers/' +hash.nodeId + '/' + hash.nodeAddr +
+  html = html + '><a href="#/yarn-node-containers/' +hash.nodeId + '/' + hash.nodeAddr +
      '">List of Containers</a></li></ul></ul></div>';
  return Ember.String.htmlSafe(html);
 });
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/node-name.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/helpers/node-name.js
@ -0,0 +1,46 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import Ember from 'ember';
+
+export function nodeName(params/*, hash*/) {
+  // Place a menu within a panel inside col-md-2 container.
+  console.log('nodes-uid', params[0]);
+  var nodeIdSplitAtPort = params[0];
+  var portIndex = nodeIdSplitAtPort.indexOf(':');
+  if (portIndex != -1) {
+    nodeIdSplitAtPort = nodeIdSplitAtPort.substring(0, portIndex) +
+        ':&#8203;' + nodeIdSplitAtPort.substring(portIndex + 1);
+  }
+  var normalizedNodeId = '';
+  var splitsAlongDots = nodeIdSplitAtPort.split('.');
+  if (splitsAlongDots) {
+    var len = splitsAlongDots.length;
+    for (var i = 0; i < len; i++) {
+      normalizedNodeId = normalizedNodeId + splitsAlongDots[i];
+      if (i != len - 1) {
+        normalizedNodeId = normalizedNodeId + '.&#8203;';
+      }
+    }
+  } else {
+    normalizedNodeId = nodeIdSplitAtPort;
+  }
+  return Ember.String.htmlSafe(normalizedNodeId);
+}
+
+export default Ember.Helper.helper(nodeName);
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-app-attempt.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-app-attempt.js
@ -21,14 +21,29 @@ import Converter from 'yarn-ui/utils/converter';

 export default DS.Model.extend({
  startTime: DS.attr('string'),
+  startedTime: DS.attr('string'),
  finishedTime: DS.attr('string'),
  containerId: DS.attr('string'),
+  amContainerId: DS.attr('string'),
  nodeHttpAddress: DS.attr('string'),
  nodeId: DS.attr('string'),
+  hosts: DS.attr('string'),
  logsLink: DS.attr('string'),
+  state: DS.attr('string'),
+
+  attemptStartedTime: function() {
+    var startTime = this.get("startTime");
+    // If startTime variable is not present, get from startedTime
+    if (startTime == undefined ||
+      startTime == "Invalid date") {
+      startTime = this.get("startedTime");
+    }
+
+    return startTime;
+  }.property("startedTime"),

  startTs: function() {
-    return Converter.dateToTimeStamp(this.get("startTime"));
+    return Converter.dateToTimeStamp(this.get('attemptStartedTime'));
  }.property("startTime"),

  finishedTs: function() {
@ -36,11 +51,57 @@ export default DS.Model.extend({
    return ts;
  }.property("finishedTime"),

+  validatedFinishedTs: function() {
+    if (this.get("finishedTs") < this.get("startTs")) {
+      return "";
+    }
+    return this.get("finishedTime");
+  }.property("finishedTime"),
+
  shortAppAttemptId: function() {
+    if (!this.get("containerId")) {
+      return this.get("id");
+    }
    return "attempt_" + 
           parseInt(Converter.containerIdToAttemptId(this.get("containerId")).split("_")[3]);
  }.property("containerId"),

+  appMasterContainerId: function() {
+    var id = this.get("containerId");
+    // If containerId variable is not present, get from amContainerId
+    if (id == undefined) {
+      id = this.get("amContainerId");
+    }
+    return id;
+  }.property("amContainerId"),
+
+  IsAmNodeUrl: function() {
+    var url = this.get("nodeHttpAddress");
+      // If nodeHttpAddress variable is not present, hardcode it.
+    if (url == undefined) {
+      url = "Not Available";
+    }
+    return url != "Not Available";
+  }.property("nodeHttpAddress"),
+
+  amNodeId : function() {
+    var id = this.get("nodeId");
+    // If nodeId variable is not present, get from host
+    if (id == undefined) {
+      id = this.get("hosts");
+    }
+    return id;
+  }.property("nodeId"),
+
+  IsLinkAvailable: function() {
+    var url = this.get("logsLink");
+    // If logsLink variable is not present, hardcode its.
+    if (url == undefined) {
+      url = "Not Available";
+    }
+    return url != "Not Available";
+  }.property("logsLink"),
+
  elapsedTime: function() {
    var elapsedMs = this.get("finishedTs") - this.get("startTs");
    if (elapsedMs <= 0) {
@ -59,4 +120,13 @@ export default DS.Model.extend({
  link: function() {
    return "/yarn-app-attempt/" + this.get("id");
  }.property(),
+
+  linkname: function() {
+    return "yarn-app-attempt";
+  }.property(),
+
+  attemptState: function() {
+    return this.get("state");
+  }.property(),
+
 });
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-app.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-app.js
@ -51,6 +51,13 @@ export default DS.Model.extend({
    return this.get('finalStatus') == "FAILED"
  }.property("finalStatus"),

+  validatedFinishedTs: function() {
+    if (this.get("finishedTime") < this.get("startTime")) {
+      return "";
+    }
+    return this.get("finishedTime");
+  }.property("finishedTime"),
+
  allocatedResource: function() {
    return Converter.resourceToString(this.get("allocatedMB"), this.get("allocatedVCores"));
  }.property("allocatedMB", "allocatedVCores"),
@ -67,6 +74,13 @@ export default DS.Model.extend({
    return "width: " + this.get("progress") + "%";
  }.property("progress"),

+  runningContainersNumber: function() {
+    if(this.get("runningContainers") < 0) {
+      return 0;
+    }
+    return this.get("runningContainers");
+  }.property("progress"),
+
  finalStatusStyle: function() {
    var style = "default";
    var finalStatus = this.get("finalStatus");
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-container.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-container.js
@ -40,6 +40,13 @@ export default DS.Model.extend({
    return ts;
  }.property("finishedTime"),

+  validatedFinishedTs: function() {
+    if (this.get("finishedTs") < this.get("startTs")) {
+      return "";
+    }
+    return this.get("finishedTime");
+  }.property("finishedTime"),
+
  elapsedTime: function() {
    var elapsedMs = this.get("finishedTs") - this.get("startTs");
    if (elapsedMs <= 0) {
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/routes/yarn-app-attempt.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/routes/yarn-app-attempt.js
@ -33,7 +33,11 @@ export default Ember.Route.extend({
        {
          app_attempt_id: param.app_attempt_id,
          is_rm: false
-        }),
+        }).catch (function() {
+         // Promise rejected, fulfill with some default value to
+         // use as the route's model and continue on with the transition
+          return [];
+        })
    });
  }
 });
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-app-attempt.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-app-attempt.js
@ -32,11 +32,14 @@ export default DS.JSONAPISerializer.extend({
        type: primaryModelClass.modelName, // yarn-app
        attributes: {
          startTime: Converter.timeStampToDate(payload.startTime),
+          startedTime: Converter.timeStampToDate(payload.startedTime),
          finishedTime: Converter.timeStampToDate(payload.finishedTime),
          containerId: payload.containerId,
+          amContainerId: payload.amContainerId,
          nodeHttpAddress: payload.nodeHttpAddress,
          nodeId: payload.nodeId,
-          state: payload.nodeId,
+          hosts: payload.host,
+          state: payload.appAttemptState,
          logsLink: payload.logsLink
        }
      };
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-app.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-app.js
@ -75,10 +75,15 @@ export default DS.JSONAPISerializer.extend({

      // payload has apps : { app: [ {},{},{} ]  }
      // need some error handling for ex apps or app may not be defined.
-      normalizedArrayResponse.data = payload.apps.app.map(singleApp => {
-        return this.internalNormalizeSingleResponse(store, primaryModelClass,
+      if(payload.apps) {
+        normalizedArrayResponse.data = payload.apps.app.map(singleApp => {
+          return this.internalNormalizeSingleResponse(store, primaryModelClass,
          singleApp, singleApp.id, requestType);
-      }, this);
+          }, this);
+      } else {
+        normalizedArrayResponse.data = [];
+      }
+
      return normalizedArrayResponse;
    }
 });
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-container.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-container.js
@ -64,9 +64,10 @@ export default DS.JSONAPISerializer.extend({
            singleContainer, singleContainer.id, requestType);
        }, this);
        return normalizedArrayResponse;  
+      } else {
+        normalizedArrayResponse.data = [];
      }

-      normalizedArrayResponse.data = [];
      return normalizedArrayResponse;
    }
 });
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-node-app.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-node-app.js
@ -76,10 +76,7 @@ export default DS.JSONAPISerializer.extend({
    } else {
      // No container reported inside containers.
      // Response of the form { "apps": null }
-      normalizedArrayResponse.data = Ember.makeArray({
-          id: "dummy",
-          type: primaryModelClass.modelName,
-          attributes: {}});
+      normalizedArrayResponse.data = [];
    }
    return normalizedArrayResponse;
  }
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-node-container.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-node-container.js
@ -64,10 +64,7 @@ export default DS.JSONAPISerializer.extend({
    } else {
      // No container reported inside containers.
      // Response of the form { "containers": null }
-      normalizedArrayResponse.data = Ember.makeArray({
-          id: "dummy",
-          type: primaryModelClass.modelName,
-          attributes: {}});
+      normalizedArrayResponse.data = [];
    }
    return normalizedArrayResponse;
  }
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-rm-node.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/serializers/yarn-rm-node.js
@ -67,10 +67,7 @@ export default DS.JSONAPISerializer.extend({
          singleNode, singleNode.id);
          }, this);
    } else {
-      normalizedArrayResponse.data = Ember.makeArray({
-          id: "dummy",
-          type: primaryModelClass.modelName,
-          attributes: {}});
+      normalizedArrayResponse.data = [];
    }
    return normalizedArrayResponse;
  }
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/application.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/application.hbs
@ -32,7 +32,26 @@
    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
-        {{outputMainMenu}}
+        {{#link-to 'yarn-queue' 'root' tagName="li"}}
+          {{#link-to 'yarn-queue' 'root'}}Queues
+            <span class="sr-only">(current)</span>
+          {{/link-to}}
+        {{/link-to}}
+        {{#link-to 'yarn-apps' tagName="li"}}
+          {{#link-to 'yarn-apps'}}Applications
+            <span class="sr-only">(current)</span>
+          {{/link-to}}
+        {{/link-to}}
+        {{#link-to 'cluster-overview' tagName="li"}}
+          {{#link-to 'cluster-overview'}}Cluster Overview
+            <span class="sr-only">(current)</span>
+          {{/link-to}}
+        {{/link-to}}
+        {{#link-to 'yarn-nodes' tagName="li"}}
+          {{#link-to 'yarn-nodes'}}Nodes
+            <span class="sr-only">(current)</span>
+          {{/link-to}}
+        {{/link-to}}
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/app-attempt-table.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/app-attempt-table.hbs
@ -24,23 +24,39 @@
    </tr>
    <tr>
      <td>Start Time</td>
-      <td>{{attempt.startTime}}</td>
+      <td>{{attempt.attemptStartedTime}}</td>
    </tr>
    <tr>
      <td>AM Container Id</td>
-      <td>{{attempt.containerId}}</td>
+      <td>{{attempt.appMasterContainerId}}</td>
    </tr>
+    {{#if attempt.IsAmNodeUrl}}
    <tr>
      <td>AM Node Web UI</td>
      <td><a href={{attempt.nodeHttpAddress}}>{{attempt.nodeHttpAddress}}</a></td>
    </tr>
+    {{/if}}
    <tr>
      <td>AM Node Id</td>
-      <td>{{attempt.nodeId}}</td>
+      <td>{{attempt.amNodeId}}</td>
    </tr>
+    {{#if attempt.IsLinkAvailable}}
    <tr>
      <td>Log</td>
      <td><a href={{attempt.logsLink}}>link</a></td>
    </tr>
+    {{/if}}
+    {{#if attempt.attemptState}}
+    <tr>
+      <td>Attempt State</td>
+      <td>{{attempt.attemptState}}</td>
+    </tr>
+    {{/if}}
+    {{#if attempt.elapsedTime}}
+    <tr>
+      <td>Elapsed Time</td>
+      <td>{{attempt.elapsedTime}}</td>
+    </tr>
+    {{/if}}
  </tbody>
 </table>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/app-table.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/app-table.hbs
@ -36,7 +36,7 @@
    {{#if arr}}
      {{#each arr as |app|}}
        <tr>
-          <td><a href="yarn-app/{{app.id}}">{{app.id}}</a></td>
+          <td><a href="#/yarn-app/{{app.id}}">{{app.id}}</a></td>
          <td>{{app.appName}}</td>
          <td>{{app.user}}</td>
          <td>{{app.queue}}</td>
@ -44,7 +44,7 @@
          <td><span class={{app.finalStatusStyle}}>{{app.finalStatus}}</span></td>
          <td>{{app.startTime}}</td>
          <td>{{app.elapsedTime}}</td>
-          <td>{{app.finishedTime}}</td>
+          <td>{{app.validatedFinishedTs}}</td>
          <td>{{app.priority}}</td>
          <td>
            <div class="progress" style="margin-bottom: 0;">
@ -57,7 +57,7 @@
      {{/each}}
    {{else}}
      <tr>
-          <td><a href="yarn-app/{{app.id}}">{{app.id}}</a></td>
+          <td><a href="#/yarn-app/{{app.id}}">{{app.id}}</a></td>
          <td>{{app.appName}}</td>
          <td>{{app.user}}</td>
          <td>{{app.queue}}</td>
@ -65,7 +65,7 @@
          <td><span class={{app.finalStatusStyle}}>{{app.finalStatus}}</span></td>
          <td>{{app.startTime}}</td>
          <td>{{app.elapsedTime}}</td>
-          <td>{{app.finishedTime}}</td>
+          <td>{{app.validatedFinishedTs}}</td>
          <td>{{app.priority}}</td>
          <td>
            <div class="progress" style="margin-bottom: 0;">
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/container-table.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/container-table.hbs
@ -24,7 +24,7 @@
    </tr>
    <tr>
      <td>Finished Time</td>
-      <td>{{container.finishedTime}}</td>
+      <td>{{container.validatedFinishedTs}}</td>
    </tr>
    <tr>
      <td>Elapsed Time</td>
@ -48,7 +48,7 @@
    </tr>
    <tr>
      <td>NodeManager UI</td>
-      <td>{{container.nodeHttpAddress}}</td>
+      <td><a href={{container.nodeHttpAddress}}>{{container.nodeHttpAddress}}</a></td>
    </tr>
  </tbody>
 </table>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/node-menu-panel.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/node-menu-panel.hbs
@ -0,0 +1,44 @@
+{{!
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+}}
+
+<div class="col-md-2 container-fluid">
+  <div class="panel panel-default">
+    <div class="panel-heading">
+       <h4>Node Manager<br>({{node-name nodeId}})</h4>
+    </div>
+      <div class="panel-body">
+        <ul class="nav nav-pills nav-stacked" id="stacked-menu">
+          <ul class="nav nav-pills nav-stacked collapse in">
+            {{#link-to 'yarn-node' tagName="li"}}
+              {{#link-to 'yarn-node' nodeId nodeAddr}}Node Information
+              {{/link-to}}
+            {{/link-to}}
+            {{#link-to 'yarn-node-apps' tagName="li"}}
+              {{#link-to 'yarn-node-apps' nodeId nodeAddr}}List of Applications
+              {{/link-to}}
+            {{/link-to}}
+            {{#link-to 'yarn-node-containers' tagName="li"}}
+              {{#link-to 'yarn-node-containers' nodeId nodeAddr}}List of Containers
+              {{/link-to}}
+            {{/link-to}}
+          </ul>
+        </ul>
+      </div>
+    </div>
+  </div>
+{{outlet}}
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/timeline-view.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/timeline-view.hbs
@ -34,7 +34,7 @@
        <div class="panel panel-default">
          <div class="panel-heading">
            {{#if selected.link}}
-              <a href={{selected.link}}>{{selected.id}}</a>
+              {{#link-to selected.linkname selected.id}}{{selected.id}}{{/link-to}}
            {{else}}
              {{selected.id}}
            {{/if}}
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/error.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/error.hbs
@ -16,4 +16,4 @@
  limitations under the License.
 --}}

-<h3 align = "center">Sorry, Error Occured.</h3>
+<h3 align = "center">Sorry, Error Occurred.</h3>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-app-attempt.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-app-attempt.hbs
@ -18,12 +18,16 @@

 <div class="container-fluid">
  <div class="row">
+    {{#if model.attempt}}
    {{app-attempt-table attempt=model.attempt}}
+    {{/if}}
  </div>

  <!-- containers table -->
  <div class="row">
+     {{#if (or model.rmContainers model.tsContainers)}}
     {{timeline-view parent-id="containers-timeline-div" my-id="timeline-view" height="400" rmModel=model.rmContainers tsModel=model.tsContainers label="shortAppAttemptId" attemptModel=false}}
+     {{/if}}
  </div>
 </div>

--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-app.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-app.hbs
@ -61,7 +61,7 @@
            </tr>
            <tr>
              <td>Running Containers</td>
-              <td>{{model.app.runningContainers}}</td>
+              <td>{{model.app.runningContainersNumber}}</td>
            </tr>
            <tr>
              <td>Preempted Resource</td>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-apps.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-apps.hbs
@ -15,7 +15,10 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 }}
-
-{{app-table table-id="apps-table" arr=model}}
-{{simple-table table-id="apps-table" bFilter=true colsOrder="0,desc" colTypes="natural elapsed-time" colTargets="0 7"}}
+{{#if model}}
+  {{app-table table-id="apps-table" arr=model}}
+  {{simple-table table-id="apps-table" bFilter=true colsOrder="0,desc" colTypes="natural elapsed-time" colTargets="0 7"}}
+{{else}}
+  <h4 align = "center">Could not find any applications from this cluster</h4>
+{{/if}}
 {{outlet}}
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-app.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-app.hbs
@ -18,7 +18,7 @@

 <div class="col-md-12 container-fluid">
  <div class="row">
-    {{node-menu path="yarn-node-app" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
+    {{node-menu-panel path="yarn-node-app" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
    <div class="col-md-10 container-fluid">
      <div class="panel panel-default">
        <div class="panel-heading"><b>Application Information</b></div>
@ -48,7 +48,7 @@
        <tbody>
          {{#each model.nodeApp.containers as |container|}}
            <tr>
-              <td><a href="yarn-node-container/{{model.nodeInfo.id}}/{{model.nodeInfo.addr}}/{{container}}">{{container}}</a></td>
+              <td><a href="#/yarn-node-container/{{model.nodeInfo.id}}/{{model.nodeInfo.addr}}/{{container}}">{{container}}</a></td>
            </tr>
          {{/each}}
       </tbody>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-apps.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-apps.hbs
@ -18,7 +18,8 @@

 <div class="col-md-12 container-fluid">
  <div class="row">
-    {{node-menu path="yarn-node-apps" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
+    {{node-menu-panel path="yarn-node-apps" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
+    {{#if model.apps}}
    <div class="col-md-10 container-fluid">
      <table id="node-apps-table" class="display table table-striped table-bordered" cellspacing="0" width="100%">
        <thead>
@ -31,21 +32,20 @@
        <tbody>
          {{#if model.apps}}
            {{#each model.apps as |app|}}
-              {{#if app.isDummyApp}}
-                <tr><td colspan="3" align="center">No apps found on this node</td></tr>
-              {{else}}
                <tr>
-                  <td><a href="yarn-node-app/{{model.nodeInfo.id}}/{{model.nodeInfo.addr}}/{{app.appId}}">{{app.appId}}</a></td>
+                  <td><a href="#/yarn-node-app/{{model.nodeInfo.id}}/{{model.nodeInfo.addr}}/{{app.appId}}">{{app.appId}}</a></td>
                  <td><span class={{app.appStateStyle}}>{{app.state}}</span></td>
                  <td>{{app.user}}</td>
                </tr>
-              {{/if}}
            {{/each}}
          {{/if}}
        </tbody>
      </table>
      {{simple-table table-id="node-apps-table" bFilter=true colsOrder="0,desc" colTypes="natural" colTargets="0"}}
    </div>
+    {{else}}
+      <h4 align = "center">No apps found on this node</h4>
+    {{/if}}
  </div>
 </div>
 {{outlet}}
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-container.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-container.hbs
@ -18,7 +18,7 @@

 <div class="col-md-12 container-fluid">
  <div class="row">
-    {{node-menu path="yarn-node-container" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
+    {{node-menu-panel path="yarn-node-container" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
    <div class="col-md-10 container-fluid">
      <div class="panel panel-default">
        <div class="panel-heading"><b>Container Information</b></div>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-containers.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-containers.hbs
@ -18,7 +18,8 @@

 <div class="col-md-12 container-fluid">
  <div class="row">
-    {{node-menu path="yarn-node-containers" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
+    {{node-menu-panel path="yarn-node-containers" nodeAddr=model.nodeInfo.addr nodeId=model.nodeInfo.id}}
+    {{#if model.containers}}
    <div class="col-md-10 container-fluid">
      <table id="node-containers-table" class="display table table-striped table-bordered" cellspacing="0" width="100%">
        <thead>
@ -32,11 +33,8 @@
        <tbody>
          {{#if model.containers}}
            {{#each model.containers as |container|}}
-              {{#if container.isDummyContainer}}
-                <tr><td colspan="4" align="center">No containers found on this node</td></tr>
-              {{else}}
                <tr>
-                  <td><a href="yarn-node-container/{{model.nodeInfo.id}}/{{model.nodeInfo.addr}}/{{container.containerId}}">{{container.containerId}}</a></td>
+                  <td><a href="#/yarn-node-container/{{model.nodeInfo.id}}/{{model.nodeInfo.addr}}/{{container.containerId}}">{{container.containerId}}</a></td>
                  <td><span class={{container.containerStateStyle}}>{{container.state}}</span></td>
                  <td>{{container.user}}</td>
                  <td>
@ -46,13 +44,15 @@
                        logFiles=container.containerLogFiles}}
                  </td>
                </tr>
-              {{/if}}
            {{/each}}
          {{/if}}
        </tbody>
      </table>
      {{simple-table table-id="node-containers-table" bFilter=true colsOrder="0,desc" colTypes="natural" colTargets="0"}}
    </div>
+    {{else}}
+      <h4 align = "center">No containers found on this node</h4>
+    {{/if}}
  </div>
 </div>
 {{outlet}}
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node.hbs
@ -18,7 +18,7 @@

 <div class="col-md-12 container-fluid">
  <div class="row">
-    {{node-menu path="yarn-node" nodeId=model.rmNode.id nodeAddr=model.node.id}}
+    {{node-menu-panel path="yarn-node" nodeId=model.rmNode.id nodeAddr=model.node.id}}
    <div class="col-md-10 container-fluid">
      <div class="panel panel-default">
        <div class="panel-heading">Node Information</div>
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-nodes.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-nodes.hbs
@ -16,6 +16,7 @@
  limitations under the License.
 --}}

+{{#if model}}
 <table id="nodes-table" class="display table table-striped table-bordered" cellspacing="0" width="100%">
  <thead>
    <tr>
@ -35,11 +36,7 @@
    </tr>
  </thead>
  <tbody>
-    {{#if model}}
      {{#each model as |node|}}
-        {{#if node.isDummyNode}}
-          <tr><td colspan="13" align="center">No nodes found on this cluster</td></tr>
-        {{else}}
          <tr>
            <td>{{node.nodeLabelsAsString}}</td>
            <td>{{node.rack}}</td>
@ -55,11 +52,12 @@
            <td>{{node.availableVirtualCores}}</td>
            <td>{{node.version}}</td>
          </tr>
-        {{/if}}
      {{/each}}
-    {{/if}}
  </tbody>
 </table>

 {{simple-table table-id="nodes-table" bFilter=true}}
+{{else}}
+  <h4 align = "center">No nodes found on this cluster</h4>
+{{/if}}
 {{outlet}}
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-queue.hbs
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-queue.hbs
@ -58,8 +58,12 @@

 <div class="row">
  <div class="col-md-12 container-fluid">
-    {{app-table table-id="apps-table" arr=model.apps}}
-    {{simple-table table-id="apps-table" bFilter=true colTypes="elapsed-time" colTargets="7"}}
+    {{#if model.apps}}
+      {{app-table table-id="apps-table" arr=model.apps}}
+      {{simple-table table-id="apps-table" bFilter=true colTypes="elapsed-time" colTargets="7"}}
+    {{else}}
+      <h4 align = "center">Could not find any applications from this cluster</h4>
+    {{/if}}
  </div>
 </div>

--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/config/environment.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/config/environment.js
@ -25,7 +25,7 @@ module.exports = function(environment) {
    modulePrefix: 'yarn-ui',
    environment: environment,
    baseURL: '/',
-    locationType: 'auto',
+    locationType: 'hash',
    EmberENV: {
      FEATURES: {
        // Here you can enable experimental features on an ember canary build
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/package.json
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/package.json
@ -22,6 +22,7 @@
    "broccoli-asset-rev": "2.4.2",
    "broccoli-funnel": "1.0.1",
    "ember-bootstrap": "0.5.1",
+    "ember-array-contains-helper": "1.0.2",
    "ember-cli": "1.13.13",
    "ember-cli-app-version": "1.0.0",
    "ember-cli-babel": "5.1.6",
@ -42,6 +43,7 @@
    "ember-export-application-global": "1.0.5",
    "ember-resolver": "2.0.3",
    "ember-spin-spinner": "0.2.3",
+    "ember-truth-helpers": "1.2.0",
    "select2": "4.0.0"
  }
 }
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/tests/unit/helpers/node-name-test.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/tests/unit/helpers/node-name-test.js
@ -0,0 +1,28 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { nodeName } from '../../../helpers/node-name';
+import { module, test } from 'qunit';
+
+module('Unit | Helper | node name');
+
+// Replace this with your real tests.
+test('it works', function(assert) {
+  let result = nodeName(42);
+  assert.ok(result);
+});