YARN-7573. Gpu Information page could be empty for nodes without GPU. (Sunil G via wangda)

Change-Id: I7f614e5a589a09ce4e4286c84b706e05c29abd14

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/webapp/NMWebServices.java

@@ -519,9 +519,7 @@ public Object getNMResourceInfo(
       }
     }
 
-    throw new YarnException(
+    return new NMResourceInfo();
-        "Could not get detailed resource information for given resource-name="
-            + resourceName);
   }
 
   private long parseLongParam(String bytes) {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-rm-node.js

@@ -97,7 +97,9 @@ export default DS.Model.extend({
     var used = 0;
     var ri;
 
-    var resourceInformations = this.get("usedResource").resourcesInformations;
+    const usedResource = this.get("usedResource");
+    const availableResource = this.get("availableResource");
+    var resourceInformations = usedResource ? usedResource.resourcesInformations : [];
     for (var i = 0; i < resourceInformations.length; i++) {
       ri = resourceInformations[i];
       if (ri.name === "yarn.io/gpu") {
@@ -106,7 +108,7 @@ export default DS.Model.extend({
     }
 
     var available = 0;
-    resourceInformations = this.get("availableResource").resourcesInformations;
+    resourceInformations = availableResource ? availableResource.resourcesInformations : [];
     for (i = 0; i < resourceInformations.length; i++) {
       ri = resourceInformations[i];
       if (ri.name === "yarn.io/gpu") {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/node-menu-panel.hbs

@@ -36,7 +36,7 @@
               {{#link-to 'yarn-node-containers' nodeId nodeAddr}}List of Containers
               {{/link-to}}
             {{/link-to}}
-            {{#if nmGpuInfo}}
+            {{#if (and nmGpuInfo nmGpuInfo.info.totalGpuDevices)}}
               {{#link-to 'yarn-node.yarn-nm-gpu' tagName="li"}}
                 {{#link-to 'yarn-node.yarn-nm-gpu' nodeId nodeAddr }}GPU Information
                 {{/link-to}}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-apps.hbs

@@ -20,7 +20,7 @@
 
 <div class="col-md-12 container-fluid">
   <div class="row">
-    {{node-menu-panel 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 nmGpuInfo=model.nmGpuInfo}}
     {{#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%">

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node-containers.hbs

@@ -20,7 +20,7 @@
 
 <div class="col-md-12 container-fluid">
   <div class="row">
-    {{node-menu-panel 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 nmGpuInfo=model.nmGpuInfo}}
     {{#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%">

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/yarn-node/yarn-nm-gpu.hbs

@@ -23,6 +23,7 @@
 
     {{node-menu-panel path="yarn-node" nodeId=model.rmNode.id
                       nodeAddr=model.node.id nmGpuInfo=model.nmGpuInfo}}
+    {{#if model.nmGpuInfo.info.totalGpuDevices}}
 
     <div class="col-md-10 container-fluid">
       <div class="panel panel-default">
@@ -49,5 +50,8 @@
         {{yarn-nm-gpu-info gpu=gpu}}
       {{/each}}
     </div>
+    {{else}}
+      <h4 align = "center">No GPUs are found on this node.</h4>
+    {{/if}}
   </div>
 </div>