YARN-6752. Display reserved resources in web UI per application

(Contributed by Abdullah Yousufi via Daniel Templeton)

(cherry picked from commit 06159858868a9cbeefc31bc6be5ae48a59cc8a6c)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/webapp/dao/AppInfo.java

@@ -61,6 +61,8 @@ public class AppInfo {
   protected int priority;
   private long allocatedCpuVcores;
   private long allocatedMemoryMB;
+  private long reservedCpuVcores;
+  private long reservedMemoryMB;
   protected boolean unmanagedApplication;
   private String appNodeLabelExpression;
   private String amNodeLabelExpression;
@@ -101,6 +103,10 @@ public class AppInfo {
             .getUsedResources().getVirtualCores();
         allocatedMemoryMB = app.getApplicationResourceUsageReport()
             .getUsedResources().getMemorySize();
+        reservedCpuVcores = app.getApplicationResourceUsageReport()
+            .getReservedResources().getVirtualCores();
+        reservedMemoryMB = app.getApplicationResourceUsageReport()
+            .getReservedResources().getMemorySize();
       }
     }
     progress = app.getProgress() * 100; // in percent
@@ -160,6 +166,14 @@ public class AppInfo {
     return allocatedMemoryMB;
   }
 
+  public long getReservedCpuVcores() {
+    return reservedCpuVcores;
+  }
+
+  public long getReservedMemoryMB() {
+    return reservedMemoryMB;
+  }
+
   public float getProgress() {
     return progress;
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/FairSchedulerAppsBlock.java

@@ -95,6 +95,8 @@ public class FairSchedulerAppsBlock extends HtmlBlock {
             th(".runningcontainer", "Running Containers").
             th(".allocatedCpu", "Allocated CPU VCores").
             th(".allocatedMemory", "Allocated Memory MB").
+            th(".reservedCpu", "Reserved CPU VCores").
+            th(".reservedMemory", "Reserved Memory MB").
             th(".progress", "Progress").
             th(".ui", "Tracking UI")._()._().
         tbody();
@@ -142,6 +144,10 @@ public class FairSchedulerAppsBlock extends HtmlBlock {
         .valueOf(appInfo.getAllocatedVCores())).append("\",\"")
       .append(appInfo.getAllocatedMB() == -1 ? "N/A" : String
         .valueOf(appInfo.getAllocatedMB())).append("\",\"")
+      .append(appInfo.getReservedVCores() == -1 ? "N/A" : String
+        .valueOf(appInfo.getReservedVCores())).append("\",\"")
+      .append(appInfo.getReservedMB() == -1 ? "N/A" : String
+        .valueOf(appInfo.getReservedMB())).append("\",\"")
       // Progress bar
       .append("<br title='").append(percent)
       .append("'> <div class='").append(C_PROGRESSBAR).append("' title='")

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMAppsBlock.java

@@ -66,6 +66,8 @@ public class RMAppsBlock extends AppsBlock {
           .th(".runningcontainer", "Running Containers")
           .th(".allocatedCpu", "Allocated CPU VCores")
           .th(".allocatedMemory", "Allocated Memory MB")
+          .th(".reservedCpu", "Reserved CPU VCores")
+          .th(".reservedMemory", "Reserved Memory MB")
           .th(".queuePercentage", "% of Queue")
           .th(".clusterPercentage", "% of Cluster")
           .th(".progress", "Progress")
@@ -146,6 +148,12 @@ public class RMAppsBlock extends AppsBlock {
         .append(app.getAllocatedMemoryMB() == -1 ? "N/A" :
             String.valueOf(app.getAllocatedMemoryMB()))
         .append("\",\"")
+        .append(app.getReservedCpuVcores() == -1 ? "N/A" : String
+            .valueOf(app.getReservedCpuVcores()))
+        .append("\",\"")
+        .append(app.getReservedMemoryMB() == -1 ? "N/A" :
+            String.valueOf(app.getReservedMemoryMB()))
+        .append("\",\"")
         .append(queuePercent)
         .append("\",\"")
         .append(clusterPercent)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/AppInfo.java

@@ -91,6 +91,8 @@ public class AppInfo {
   private String amRPCAddress;
   protected long allocatedMB;
   protected long allocatedVCores;
+  protected long reservedMB;
+  protected long reservedVCores;
   protected int runningContainers;
   protected long memorySeconds;
   protected long vcoreSeconds;
@@ -189,8 +191,11 @@ public class AppInfo {
               .getApplicationResourceUsageReport();
           if (resourceReport != null) {
             Resource usedResources = resourceReport.getUsedResources();
+            Resource reservedResources = resourceReport.getReservedResources();
             allocatedMB = usedResources.getMemorySize();
             allocatedVCores = usedResources.getVirtualCores();
+            reservedMB = reservedResources.getMemorySize();
+            reservedVCores = reservedResources.getVirtualCores();
             runningContainers = resourceReport.getNumUsedContainers();
             queueUsagePercentage = resourceReport.getQueueUsagePercentage();
             clusterUsagePercentage = resourceReport.getClusterUsagePercentage();
@@ -391,6 +396,14 @@ public class AppInfo {
     return this.allocatedVCores;
   }
   
+  public long getReservedMB() {
+    return this.reservedMB;
+  }
+
+  public long getReservedVCores() {
+    return this.reservedVCores;
+  }
+
   public long getPreemptedMB() {
     return preemptedResourceMB;
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesApps.java

@@ -1417,7 +1417,7 @@ public class TestRMWebServicesApps extends JerseyTestBase {
   public void verifyAppInfo(JSONObject info, RMApp app, boolean hasResourceReqs)
       throws JSONException, Exception {
 
-    int expectedNumberOfElements = 34 + (hasResourceReqs ? 2 : 0);
+    int expectedNumberOfElements = 36 + (hasResourceReqs ? 2 : 0);
     String appNodeLabelExpression = null;
     String amNodeLabelExpression = null;
     if (app.getApplicationSubmissionContext()