YARN-2181. Added preemption info to logs and RM web UI. Contributed by Wangda Tan

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1609561 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -80,6 +80,9 @@ Release 2.5.0 - UNRELEASED
     YARN-1366. Changed AMRMClient to re-register with RM and send outstanding requests
     back to RM on work-preserving RM restart. (Rohith via jianhe)
 
+    YARN-2181. Added preemption info to logs and RM web UI. (Wangda Tan via
+    jianhe)
+
   IMPROVEMENTS
 
     YARN-1479. Invalid NaN values in Hadoop REST API JSON response (Chen He via

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMApp.java

@@ -223,4 +223,11 @@ public interface RMApp extends EventHandler<RMAppEvent> {
    * @return the external user-facing state of ApplicationMaster.
    */
   YarnApplicationState createApplicationState();
+  
+  /**
+   * Get RMAppMetrics of the {@link RMApp}.
+   * 
+   * @return metrics
+   */
+  RMAppMetrics getRMAppMetrics();
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppImpl.java

@@ -44,6 +44,7 @@ import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
 import org.apache.hadoop.yarn.api.records.NodeId;
 import org.apache.hadoop.yarn.api.records.NodeState;
+import org.apache.hadoop.yarn.api.records.Resource;
 import org.apache.hadoop.yarn.api.records.YarnApplicationState;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.event.Dispatcher;
@@ -65,6 +66,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptEventType;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptState;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppStartAttemptEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
@@ -78,6 +80,7 @@ import org.apache.hadoop.yarn.state.MultipleArcTransition;
 import org.apache.hadoop.yarn.state.SingleArcTransition;
 import org.apache.hadoop.yarn.state.StateMachine;
 import org.apache.hadoop.yarn.state.StateMachineFactory;
+import org.apache.hadoop.yarn.util.resource.Resources;
 
 @SuppressWarnings({ "rawtypes", "unchecked" })
 public class RMAppImpl implements RMApp, Recoverable {
@@ -1202,4 +1205,25 @@ public class RMAppImpl implements RMApp, Recoverable {
   public Set<NodeId> getRanNodes() {
     return ranNodes;
   }
+  
+  @Override
+  public RMAppMetrics getRMAppMetrics() {
+    Resource resourcePreempted = Resource.newInstance(0, 0);
+    int numAMContainerPreempted = 0;
+    int numNonAMContainerPreempted = 0;
+    for (RMAppAttempt attempt : attempts.values()) {
+      if (null != attempt) {
+        RMAppAttemptMetrics attemptMetrics =
+            attempt.getRMAppAttemptMetrics();
+        Resources.addTo(resourcePreempted,
+            attemptMetrics.getResourcePreempted());
+        numAMContainerPreempted += attemptMetrics.getIsPreempted() ? 1 : 0;
+        numNonAMContainerPreempted +=
+            attemptMetrics.getNumNonAMContainersPreempted();
+      }
+    }
+
+    return new RMAppMetrics(resourcePreempted,
+        numNonAMContainerPreempted, numAMContainerPreempted);
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppMetrics.java

@@ -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.
+ */
+
+package org.apache.hadoop.yarn.server.resourcemanager.rmapp;
+
+import org.apache.hadoop.yarn.api.records.Resource;
+
+public class RMAppMetrics {
+  final Resource resourcePreempted;
+  final int numNonAMContainersPreempted;
+  final int numAMContainersPreempted;
+
+  public RMAppMetrics(Resource resourcePreempted,
+      int numNonAMContainersPreempted, int numAMContainersPreempted) {
+    this.resourcePreempted = resourcePreempted;
+    this.numNonAMContainersPreempted = numNonAMContainersPreempted;
+    this.numAMContainersPreempted = numAMContainersPreempted;
+  }
+
+  public Resource getResourcePreempted() {
+    return resourcePreempted;
+  }
+
+  public int getNumNonAMContainersPreempted() {
+    return numNonAMContainersPreempted;
+  }
+
+  public int getNumAMContainersPreempted() {
+    return numAMContainersPreempted;
+  }
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/attempt/RMAppAttempt.java

@@ -207,4 +207,10 @@ public interface RMAppAttempt extends EventHandler<RMAppAttemptEvent> {
    * </ul>
    */
   boolean shouldCountTowardsMaxAttemptRetry();
+  
+  /**
+   * Get metrics from the {@link RMAppAttempt}
+   * @return metrics
+   */
+  RMAppAttemptMetrics getRMAppAttemptMetrics();
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/attempt/RMAppAttemptImpl.java

@@ -165,6 +165,8 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
   private RMAppAttemptState stateBeforeFinalSaving;
   private Object transitionTodo;
   
+  private RMAppAttemptMetrics attemptMetrics = null;
+
   private static final StateMachineFactory<RMAppAttemptImpl,
                                            RMAppAttemptState,
                                            RMAppAttemptEventType,
@@ -227,6 +229,12 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
           RMAppAttemptEventType.KILL,
           new FinalSavingTransition(new BaseFinalTransition(
             RMAppAttemptState.KILLED), RMAppAttemptState.KILLED))
+      .addTransition(RMAppAttemptState.ALLOCATED_SAVING, 
+          RMAppAttemptState.FINAL_SAVING,
+          RMAppAttemptEventType.CONTAINER_FINISHED,
+          new FinalSavingTransition(
+            new AMContainerCrashedBeforeRunningTransition(), 
+            RMAppAttemptState.FAILED))
 
        // Transitions from LAUNCHED_UNMANAGED_SAVING State
       .addTransition(RMAppAttemptState.LAUNCHED_UNMANAGED_SAVING, 
@@ -336,7 +344,7 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
       // use by the next new attempt.
       .addTransition(RMAppAttemptState.FAILED, RMAppAttemptState.FAILED,
           RMAppAttemptEventType.CONTAINER_FINISHED,
-          new ContainerFinishedAtFailedTransition())
+          new ContainerFinishedAtFinalStateTransition())
       .addTransition(
           RMAppAttemptState.FAILED,
           RMAppAttemptState.FAILED,
@@ -372,8 +380,11 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
               RMAppAttemptEventType.EXPIRE,
               RMAppAttemptEventType.UNREGISTERED,
               RMAppAttemptEventType.CONTAINER_ALLOCATED,
-              RMAppAttemptEventType.CONTAINER_FINISHED,
               RMAppAttemptEventType.KILL))
+      .addTransition(RMAppAttemptState.FINISHED, 
+          RMAppAttemptState.FINISHED, 
+          RMAppAttemptEventType.CONTAINER_FINISHED, 
+          new ContainerFinishedAtFinalStateTransition())
 
       // Transitions from KILLED State
       .addTransition(
@@ -386,10 +397,13 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
               RMAppAttemptEventType.EXPIRE,
               RMAppAttemptEventType.REGISTERED,
               RMAppAttemptEventType.CONTAINER_ALLOCATED,
-              RMAppAttemptEventType.CONTAINER_FINISHED,
               RMAppAttemptEventType.UNREGISTERED,
               RMAppAttemptEventType.KILL,
               RMAppAttemptEventType.STATUS_UPDATE))
+      .addTransition(RMAppAttemptState.KILLED, 
+          RMAppAttemptState.KILLED, 
+          RMAppAttemptEventType.CONTAINER_FINISHED, 
+          new ContainerFinishedAtFinalStateTransition())
     .installTopology();
 
   public RMAppAttemptImpl(ApplicationAttemptId appAttemptId,
@@ -412,6 +426,7 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
     this.proxiedTrackingUrl = generateProxyUriWithScheme(null);
     this.maybeLastAttempt = maybeLastAttempt;
     this.stateMachine = stateMachineFactory.make(this);
+    this.attemptMetrics = new RMAppAttemptMetrics(applicationAttemptId);
   }
 
   @Override
@@ -688,6 +703,9 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
     diagnostics.append("Attempt recovered after RM restart");
     diagnostics.append(attemptState.getDiagnostics());
     this.amContainerExitStatus = attemptState.getAMContainerExitStatus();
+    if (amContainerExitStatus == ContainerExitStatus.PREEMPTED) {
+      this.attemptMetrics.setIsPreempted();
+    }
     setMasterContainer(attemptState.getMasterContainer());
     recoverAppAttemptCredentials(attemptState.getAppAttemptCredentials());
     this.recoveredFinalState = attemptState.getState();
@@ -1453,8 +1471,8 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
     public RMAppAttemptState transition(RMAppAttemptImpl appAttempt,
         RMAppAttemptEvent event) {
 
-      RMAppAttemptContainerFinishedEvent containerFinishedEvent
+      RMAppAttemptContainerFinishedEvent containerFinishedEvent =
-        = (RMAppAttemptContainerFinishedEvent) event;
+          (RMAppAttemptContainerFinishedEvent) event;
       ContainerStatus containerStatus =
           containerFinishedEvent.getContainerStatus();
 
@@ -1463,25 +1481,27 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
       if (appAttempt.masterContainer != null
           && appAttempt.masterContainer.getId().equals(
               containerStatus.getContainerId())) {
+
         // Remember the follow up transition and save the final attempt state.
         appAttempt.rememberTargetTransitionsAndStoreState(event,
             transitionToDo, RMAppAttemptState.FAILED, RMAppAttemptState.FAILED);
         return RMAppAttemptState.FINAL_SAVING;
       }
 
-      // Normal container.Put it in completedcontainers list
+      // Normal container.Put it in completed containers list
       appAttempt.justFinishedContainers.add(containerStatus);
       return this.currentState;
     }
   }
 
-  private static final class ContainerFinishedAtFailedTransition
+  private static final class ContainerFinishedAtFinalStateTransition
       extends BaseTransition {
     @Override
     public void
         transition(RMAppAttemptImpl appAttempt, RMAppAttemptEvent event) {
       RMAppAttemptContainerFinishedEvent containerFinishedEvent =
           (RMAppAttemptContainerFinishedEvent) event;
+      
       ContainerStatus containerStatus =
           containerFinishedEvent.getContainerStatus();
       // Normal container. Add it in completed containers list
@@ -1705,4 +1725,11 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
   public boolean mayBeLastAttempt() {
     return maybeLastAttempt;
   }
+
+  @Override
+  public RMAppAttemptMetrics getRMAppAttemptMetrics() {
+    // didn't use read/write lock here because RMAppAttemptMetrics has its own
+    // lock
+    return attemptMetrics;
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/attempt/RMAppAttemptMetrics.java

@@ -0,0 +1,97 @@
+/**
+ * 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.
+ */
+
+package org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
+import org.apache.hadoop.yarn.api.records.Resource;
+import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
+import org.apache.hadoop.yarn.util.resource.Resources;
+
+public class RMAppAttemptMetrics {
+  private static final Log LOG = LogFactory.getLog(RMAppAttemptMetrics.class);
+
+  private ApplicationAttemptId attemptId = null;
+  // preemption info
+  private Resource resourcePreempted = Resource.newInstance(0, 0);
+  private AtomicInteger numNonAMContainersPreempted = new AtomicInteger(0);
+  private AtomicBoolean isPreempted = new AtomicBoolean(false);
+  
+  private ReadLock readLock;
+  private WriteLock writeLock;
+  
+  public RMAppAttemptMetrics(ApplicationAttemptId attemptId) {
+    this.attemptId = attemptId;
+    ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
+    this.readLock = lock.readLock();
+    this.writeLock = lock.writeLock();
+  }
+  
+  public void updatePreemptionInfo(Resource resource, RMContainer container) {
+    try {
+      writeLock.lock();
+      resourcePreempted = Resources.addTo(resourcePreempted, resource);
+    } finally {
+      writeLock.unlock();
+    }
+
+    if (!container.isAMContainer()) {
+      // container got preempted is not a master container
+      LOG.info(String.format(
+        "Non-AM container preempted, current appAttemptId=%s, "
+            + "containerId=%s, resource=%s", attemptId,
+        container.getContainerId(), resource));
+      numNonAMContainersPreempted.incrementAndGet();
+    } else {
+      // container got preempted is a master container
+      LOG.info(String.format("AM container preempted, "
+          + "current appAttemptId=%s, containerId=%s, resource=%s", attemptId,
+        container.getContainerId(), resource));
+      isPreempted.set(true);
+    }
+  }
+  
+  public Resource getResourcePreempted() {
+    try {
+      readLock.lock();
+      return resourcePreempted;
+    } finally {
+      readLock.unlock();
+    }
+  }
+
+  public int getNumNonAMContainersPreempted() {
+    return numNonAMContainersPreempted.get();
+  }
+  
+  public void setIsPreempted() {
+    this.isPreempted.set(true);
+  }
+  
+  public boolean getIsPreempted() {
+    return this.isPreempted.get();
+  }
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmcontainer/RMContainerImpl.java

@@ -27,6 +27,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.Container;
+import org.apache.hadoop.yarn.api.records.ContainerExitStatus;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.ContainerReport;
 import org.apache.hadoop.yarn.api.records.ContainerState;
@@ -38,6 +39,7 @@ import org.apache.hadoop.yarn.event.EventHandler;
 import org.apache.hadoop.yarn.server.api.protocolrecords.NMContainerStatus;
 import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppRunningOnNodeEvent;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.event.RMAppAttemptContainerAllocatedEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.event.RMAppAttemptContainerFinishedEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeCleanContainerEvent;
@@ -458,10 +460,30 @@ public class RMContainerImpl implements RMContainer {
       container.finishTime = System.currentTimeMillis();
       container.finishedStatus = finishedEvent.getRemoteContainerStatus();
       // Inform AppAttempt
+      // container.getContainer() can return null when a RMContainer is a
+      // reserved container
+      updateMetricsIfPreempted(container);
+
       container.eventHandler.handle(new RMAppAttemptContainerFinishedEvent(
         container.appAttemptId, finishedEvent.getRemoteContainerStatus()));
-      container.rmContext.getRMApplicationHistoryWriter()
+
-          .containerFinished(container);
+      container.rmContext.getRMApplicationHistoryWriter().containerFinished(
+        container);
+    }
+
+    private static void updateMetricsIfPreempted(RMContainerImpl container) {
+      // If this is a preempted container, update preemption metrics
+      if (ContainerExitStatus.PREEMPTED == container.finishedStatus
+        .getExitStatus()) {
+
+        Resource resource = container.getContainer().getResource();
+        RMAppAttempt rmAttempt =
+            container.rmContext.getRMApps()
+              .get(container.getApplicationAttemptId().getApplicationId())
+              .getCurrentAppAttempt();
+        rmAttempt.getRMAppAttemptMetrics().updatePreemptionInfo(resource,
+          container);
+      }
     }
   }
 

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

@@ -36,7 +36,9 @@ import org.apache.hadoop.yarn.api.records.QueueACL;
 import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.security.QueueACLsManager;
 import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppAttemptInfo;
 import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppInfo;
@@ -110,19 +112,42 @@ public class AppBlock extends HtmlBlock {
 
     setTitle(join("Application ", aid));
 
-    info("Application Overview").
+    RMAppMetrics appMerics = rmApp.getRMAppMetrics();
-      _("User:", app.getUser()).
+    RMAppAttemptMetrics attemptMetrics =
-      _("Name:", app.getName()).
+        rmApp.getCurrentAppAttempt().getRMAppAttemptMetrics();
-      _("Application Type:", app.getApplicationType()).
+    info("Application Overview")
-      _("Application Tags:", app.getApplicationTags()).
+        ._("User:", app.getUser())
-      _("State:", app.getState()).
+        ._("Name:", app.getName())
-      _("FinalStatus:", app.getFinalStatus()).
+        ._("Application Type:", app.getApplicationType())
-      _("Started:", Times.format(app.getStartTime())).
+        ._("Application Tags:", app.getApplicationTags())
-      _("Elapsed:", StringUtils.formatTime(
+        ._("State:", app.getState())
-        Times.elapsed(app.getStartTime(), app.getFinishTime()))).
+        ._("FinalStatus:", app.getFinalStatus())
-      _("Tracking URL:", !app.isTrackingUrlReady() ?
+        ._("Started:", Times.format(app.getStartTime()))
-        "#" : app.getTrackingUrlPretty(), app.getTrackingUI()).
+        ._("Elapsed:",
-      _("Diagnostics:", app.getNote());
+            StringUtils.formatTime(Times.elapsed(app.getStartTime(),
+                app.getFinishTime())))
+        ._("Tracking URL:",
+            !app.isTrackingUrlReady() ? "#" : app.getTrackingUrlPretty(),
+            app.getTrackingUI())
+        ._("Diagnostics:", app.getNote());
+
+    DIV<Hamlet> pdiv = html.
+        _(InfoBlock.class).
+        div(_INFO_WRAP);
+    info("Application Overview").clear();
+    info("Application Metrics")
+        ._("Total Resource Preempted:",
+          appMerics.getResourcePreempted())
+        ._("Total Number of Non-AM Containers Preempted:",
+          String.valueOf(appMerics.getNumNonAMContainersPreempted()))
+        ._("Total Number of AM Containers Preempted:",
+          String.valueOf(appMerics.getNumAMContainersPreempted()))
+        ._("Resource Preempted from Current Attempt:",
+          attemptMetrics.getResourcePreempted())
+        ._("Number of Non-AM Containers Preempted from Current Attempt:",
+          String.valueOf(attemptMetrics
+            .getNumNonAMContainersPreempted()));
+    pdiv._();
 
     Collection<RMAppAttempt> attempts = rmApp.getAppAttempts().values();
     String amString =

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

@@ -30,6 +30,7 @@ import org.apache.hadoop.yarn.api.records.Resource;
 import org.apache.hadoop.yarn.api.records.YarnApplicationState;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.util.ConverterUtils;
 import org.apache.hadoop.yarn.util.Times;
@@ -79,6 +80,12 @@ public class AppInfo {
   protected int allocatedVCores;
   protected int runningContainers;
   
+  // preemption info fields
+  protected int preemptedResourceMB;
+  protected int preemptedResourceVCores;
+  protected int numNonAMContainerPreempted;
+  protected int numAMContainerPreempted;
+
   public AppInfo() {
   } // JAXB needs this
 
@@ -147,6 +154,17 @@ public class AppInfo {
           }
         }
       }
+
+      // copy preemption info fields
+      RMAppMetrics appMetrics = app.getRMAppMetrics();
+      numAMContainerPreempted =
+          appMetrics.getNumAMContainersPreempted();
+      preemptedResourceMB =
+          appMetrics.getResourcePreempted().getMemory();
+      numNonAMContainerPreempted =
+          appMetrics.getNumNonAMContainersPreempted();
+      preemptedResourceVCores =
+          appMetrics.getResourcePreempted().getVirtualCores();
     }
   }
 
@@ -254,4 +272,19 @@ public class AppInfo {
     return this.allocatedVCores;
   }
   
+  public int getPreemptedMB() {
+    return preemptedResourceMB;
+  }
+
+  public int getPreemptedVCores() {
+    return preemptedResourceVCores;
+  }
+
+  public int getNumNonAMContainersPreempted() {
+    return numNonAMContainerPreempted;
+  }
+  
+  public int getNumAMContainersPreempted() {
+    return numAMContainerPreempted;
+  }
 }

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

@@ -24,7 +24,6 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.junit.Assert;
-
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.yarn.api.ApplicationMasterProtocol;
@@ -34,6 +33,7 @@ import org.apache.hadoop.yarn.api.protocolrecords.FinishApplicationMasterRequest
 import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterRequest;
 import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterResponse;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
+import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
 import org.apache.hadoop.yarn.api.records.Priority;
@@ -251,4 +251,22 @@ public class MockAM {
   public ApplicationAttemptId getApplicationAttemptId() {
     return this.attemptId;
   }
+  
+  public List<Container> allocateAndWaitForContainers(int nContainer,
+      int memory, MockNM nm) throws Exception {
+    // AM request for containers
+    allocate("ANY", memory, nContainer, null);
+    // kick the scheduler
+    nm.nodeHeartbeat(true);
+    List<Container> conts =
+        allocate(new ArrayList<ResourceRequest>(), null)
+            .getAllocatedContainers();
+    while (conts.size() < nContainer) {
+      nm.nodeHeartbeat(true);
+      conts.addAll(allocate(new ArrayList<ResourceRequest>(),
+          new ArrayList<ContainerId>()).getAllocatedContainers());
+      Thread.sleep(500);
+    }
+    return conts;
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/applicationsmanager/MockAsm.java

@@ -32,10 +32,12 @@ import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
 import org.apache.hadoop.yarn.api.records.NodeId;
+import org.apache.hadoop.yarn.api.records.Resource;
 import org.apache.hadoop.yarn.api.records.YarnApplicationState;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppEvent;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppState;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
@@ -165,6 +167,11 @@ public abstract class MockAsm extends MockApps {
     public Set<NodeId> getRanNodes() {
       throw new UnsupportedOperationException("Not supported yet.");
     }
+
+    @Override
+    public RMAppMetrics getRMAppMetrics() {
+      return new RMAppMetrics(Resource.newInstance(0, 0), 0, 0);
+    }
   }
 
   public static RMApp newApplication(int i) {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/MockRMApp.java

@@ -30,6 +30,7 @@ import org.apache.hadoop.yarn.api.records.ApplicationReport;
 import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
 import org.apache.hadoop.yarn.api.records.NodeId;
+import org.apache.hadoop.yarn.api.records.Resource;
 import org.apache.hadoop.yarn.api.records.YarnApplicationState;
 import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationSubmissionContextPBImpl;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
@@ -238,4 +239,13 @@ public class MockRMApp implements RMApp {
   public Set<NodeId> getRanNodes() {
     return null;
   }
+  
+  public Resource getResourcePreempted() {
+    throw new UnsupportedOperationException("Not supported yet.");
+  }
+
+  @Override
+  public RMAppMetrics getRMAppMetrics() {
+    throw new UnsupportedOperationException("Not supported yet.");
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java

@@ -50,6 +50,7 @@ import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterReque
 import org.apache.hadoop.yarn.api.records.ApplicationAccessType;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
+import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.Priority;
 import org.apache.hadoop.yarn.api.records.QueueInfo;
@@ -62,6 +63,7 @@ import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.ipc.YarnRPC;
 import org.apache.hadoop.yarn.server.resourcemanager.Application;
+import org.apache.hadoop.yarn.server.resourcemanager.MockAM;
 import org.apache.hadoop.yarn.server.resourcemanager.MockNM;
 import org.apache.hadoop.yarn.server.resourcemanager.MockNodes;
 import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
@@ -72,7 +74,10 @@ import org.apache.hadoop.yarn.server.resourcemanager.Task;
 import org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.MockRMWithAMS;
 import org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.MyContainerManager;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppMetrics;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppState;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptState;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler;
@@ -707,6 +712,46 @@ public class TestCapacityScheduler {
     }
   }
   
+  private MockAM launchAM(RMApp app, MockRM rm, MockNM nm)
+      throws Exception {
+    RMAppAttempt attempt = app.getCurrentAppAttempt();
+    nm.nodeHeartbeat(true);
+    MockAM am = rm.sendAMLaunched(attempt.getAppAttemptId());
+    am.registerAppAttempt();
+    rm.waitForState(app.getApplicationId(), RMAppState.RUNNING);
+    return am;
+  }
+
+  private void waitForAppPreemptionInfo(RMApp app, Resource preempted,
+      int numAMPreempted, int numTaskPreempted,
+      Resource currentAttemptPreempted, boolean currentAttemptAMPreempted,
+      int numLatestAttemptTaskPreempted) throws InterruptedException {
+    while (true) {
+      RMAppMetrics appPM = app.getRMAppMetrics();
+      RMAppAttemptMetrics attemptPM =
+          app.getCurrentAppAttempt().getRMAppAttemptMetrics();
+
+      if (appPM.getResourcePreempted().equals(preempted)
+          && appPM.getNumAMContainersPreempted() == numAMPreempted
+          && appPM.getNumNonAMContainersPreempted() == numTaskPreempted
+          && attemptPM.getResourcePreempted().equals(currentAttemptPreempted)
+          && app.getCurrentAppAttempt().getRMAppAttemptMetrics()
+            .getIsPreempted() == currentAttemptAMPreempted
+          && attemptPM.getNumNonAMContainersPreempted() == 
+             numLatestAttemptTaskPreempted) {
+        return;
+      }
+      Thread.sleep(500);
+    }
+  }
+
+  private void waitForNewAttemptCreated(RMApp app,
+      ApplicationAttemptId previousAttemptId) throws InterruptedException {
+    while (app.getCurrentAppAttempt().equals(previousAttemptId)) {
+      Thread.sleep(500);
+    }
+  }
+  
   @Test(timeout = 30000)
   public void testAllocateDoesNotBlockOnSchedulerLock() throws Exception {
     final YarnConfiguration conf = new YarnConfiguration();
@@ -828,4 +873,78 @@ public class TestCapacityScheduler {
 
     cs.stop();
   }
+
+  @Test(timeout = 120000)
+  public void testPreemptionInfo() throws Exception {
+    Configuration conf = new Configuration();
+    conf.setInt(YarnConfiguration.RM_AM_MAX_ATTEMPTS, 3);
+    conf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class,
+        ResourceScheduler.class);
+    int CONTAINER_MEMORY = 1024; // start RM
+    MockRM rm1 = new MockRM(conf);
+    rm1.start();
+
+    // get scheduler
+    CapacityScheduler cs = (CapacityScheduler) rm1.getResourceScheduler();
+
+    // start NM
+    MockNM nm1 =
+        new MockNM("127.0.0.1:1234", 15120, rm1.getResourceTrackerService());
+    nm1.registerNode();
+
+    // create app and launch the AM
+    RMApp app0 = rm1.submitApp(CONTAINER_MEMORY);
+    MockAM am0 = launchAM(app0, rm1, nm1);
+
+    // get scheduler app
+    FiCaSchedulerApp schedulerAppAttempt =
+        cs.getSchedulerApplications().get(app0.getApplicationId())
+            .getCurrentAppAttempt();
+
+    // allocate some containers and launch them
+    List<Container> allocatedContainers =
+        am0.allocateAndWaitForContainers(3, CONTAINER_MEMORY, nm1);
+
+    // kill the 3 containers
+    for (Container c : allocatedContainers) {
+      cs.killContainer(schedulerAppAttempt.getRMContainer(c.getId()));
+    }
+
+    // check values
+    waitForAppPreemptionInfo(app0,
+        Resource.newInstance(CONTAINER_MEMORY * 3, 3), 0, 3,
+        Resource.newInstance(CONTAINER_MEMORY * 3, 3), false, 3);
+
+    // kill app0-attempt0 AM container
+    cs.killContainer(schedulerAppAttempt.getRMContainer(app0
+        .getCurrentAppAttempt().getMasterContainer().getId()));
+
+    // wait for app0 failed
+    waitForNewAttemptCreated(app0, am0.getApplicationAttemptId());
+
+    // check values
+    waitForAppPreemptionInfo(app0,
+        Resource.newInstance(CONTAINER_MEMORY * 4, 4), 1, 3,
+        Resource.newInstance(0, 0), false, 0);
+
+    // launch app0-attempt1
+    MockAM am1 = launchAM(app0, rm1, nm1);
+    schedulerAppAttempt =
+        cs.getSchedulerApplications().get(app0.getApplicationId())
+            .getCurrentAppAttempt();
+
+    // allocate some containers and launch them
+    allocatedContainers =
+        am1.allocateAndWaitForContainers(3, CONTAINER_MEMORY, nm1);
+    for (Container c : allocatedContainers) {
+      cs.killContainer(schedulerAppAttempt.getRMContainer(c.getId()));
+    }
+
+    // check values
+    waitForAppPreemptionInfo(app0,
+        Resource.newInstance(CONTAINER_MEMORY * 7, 7), 1, 6,
+        Resource.newInstance(CONTAINER_MEMORY * 3, 3), false, 3);
+
+    rm1.stop();
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

@@ -41,13 +41,14 @@ import java.util.List;
 import java.util.Map;
 
 import org.junit.Assert;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.Container;
+import org.apache.hadoop.yarn.api.records.ContainerExitStatus;
 import org.apache.hadoop.yarn.api.records.ContainerId;
+import org.apache.hadoop.yarn.api.records.ContainerState;
 import org.apache.hadoop.yarn.api.records.ContainerStatus;
 import org.apache.hadoop.yarn.api.records.Priority;
 import org.apache.hadoop.yarn.api.records.QueueACL;
@@ -499,7 +500,10 @@ public class TestLeafQueue {
     // Release each container from app_0
     for (RMContainer rmContainer : app_0.getLiveContainers()) {
       a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-          null, RMContainerEventType.KILL, null);
+          ContainerStatus.newInstance(rmContainer.getContainerId(),
+              ContainerState.COMPLETE, "",
+              ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+          RMContainerEventType.KILL, null);
     }
     assertEquals(1*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());
@@ -510,7 +514,10 @@ public class TestLeafQueue {
     // Release each container from app_1
     for (RMContainer rmContainer : app_1.getLiveContainers()) {
       a.completedContainer(clusterResource, app_1, node_0, rmContainer,
-          null, RMContainerEventType.KILL, null);
+          ContainerStatus.newInstance(rmContainer.getContainerId(),
+              ContainerState.COMPLETE, "",
+              ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+          RMContainerEventType.KILL, null);
     }
 
     assertEquals(0*GB, a.getUsedResources().getMemory());
@@ -871,7 +878,10 @@ public class TestLeafQueue {
     // 8. Release each container from app_0
     for (RMContainer rmContainer : app_0.getLiveContainers()) {
       a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-          null, RMContainerEventType.KILL, null);
+          ContainerStatus.newInstance(rmContainer.getContainerId(),
+              ContainerState.COMPLETE, "",
+              ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+          RMContainerEventType.KILL, null);
     }
     assertEquals(5*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());
@@ -882,7 +892,10 @@ public class TestLeafQueue {
     // 9. Release each container from app_2
     for (RMContainer rmContainer : app_2.getLiveContainers()) {
       a.completedContainer(clusterResource, app_2, node_0, rmContainer,
-          null, RMContainerEventType.KILL, null);
+          ContainerStatus.newInstance(rmContainer.getContainerId(),
+              ContainerState.COMPLETE, "",
+              ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+          RMContainerEventType.KILL, null);
     }
     assertEquals(2*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());
@@ -893,7 +906,10 @@ public class TestLeafQueue {
     // 10. Release each container from app_3
     for (RMContainer rmContainer : app_3.getLiveContainers()) {
       a.completedContainer(clusterResource, app_3, node_0, rmContainer,
-          null, RMContainerEventType.KILL, null);
+          ContainerStatus.newInstance(rmContainer.getContainerId(),
+              ContainerState.COMPLETE, "",
+              ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+          RMContainerEventType.KILL, null);
     }
     assertEquals(0*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());
@@ -979,9 +995,12 @@ public class TestLeafQueue {
     assertEquals(2*GB, a.getMetrics().getAllocatedMB());
     
     // Now free 1 container from app_0 i.e. 1G
-    a.completedContainer(clusterResource, app_0, node_0, 
+    RMContainer rmContainer = app_0.getLiveContainers().iterator().next();
-        app_0.getLiveContainers().iterator().next(), 
+    a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-        null, RMContainerEventType.KILL, null);
+        ContainerStatus.newInstance(rmContainer.getContainerId(),
+            ContainerState.COMPLETE, "",
+            ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+        RMContainerEventType.KILL, null);
     a.assignContainers(clusterResource, node_0);
     assertEquals(5*GB, a.getUsedResources().getMemory()); 
     assertEquals(1*GB, app_0.getCurrentConsumption().getMemory());
@@ -992,9 +1011,12 @@ public class TestLeafQueue {
     assertEquals(1*GB, a.getMetrics().getAllocatedMB());
 
     // Now finish another container from app_0 and fulfill the reservation
-    a.completedContainer(clusterResource, app_0, node_0, 
+    rmContainer = app_0.getLiveContainers().iterator().next();
-        app_0.getLiveContainers().iterator().next(), 
+    a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-        null, RMContainerEventType.KILL, null);
+        ContainerStatus.newInstance(rmContainer.getContainerId(),
+            ContainerState.COMPLETE, "",
+            ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+        RMContainerEventType.KILL, null);
     a.assignContainers(clusterResource, node_0);
     assertEquals(4*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());
@@ -1094,9 +1116,12 @@ public class TestLeafQueue {
     assertEquals(6*GB, a.getMetrics().getAllocatedMB());
 
     // Now free 1 container from app_0 and try to assign to node_0
-    a.completedContainer(clusterResource, app_0, node_0,
+    RMContainer rmContainer = app_0.getLiveContainers().iterator().next();
-        app_0.getLiveContainers().iterator().next(), 
+    a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-        null, RMContainerEventType.KILL, null);
+        ContainerStatus.newInstance(rmContainer.getContainerId(),
+            ContainerState.COMPLETE, "",
+            ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+        RMContainerEventType.KILL, null);
     a.assignContainers(clusterResource, node_0);
     assertEquals(8*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());
@@ -1186,9 +1211,12 @@ public class TestLeafQueue {
     assertEquals(2*GB, node_0.getUsedResource().getMemory());
     
     // Now free 1 container from app_0 i.e. 1G, and re-reserve it
-    a.completedContainer(clusterResource, app_0, node_0, 
+    RMContainer rmContainer = app_0.getLiveContainers().iterator().next();
-        app_0.getLiveContainers().iterator().next(), 
+    a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-        null, RMContainerEventType.KILL, null);
+        ContainerStatus.newInstance(rmContainer.getContainerId(),
+            ContainerState.COMPLETE, "",
+            ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+        RMContainerEventType.KILL, null);
     a.assignContainers(clusterResource, node_0);
     assertEquals(5*GB, a.getUsedResources().getMemory()); 
     assertEquals(1*GB, app_0.getCurrentConsumption().getMemory());
@@ -1218,9 +1246,12 @@ public class TestLeafQueue {
     assertEquals(2, app_1.getReReservations(priority)); 
     
     // Now finish another container from app_0 and see the reservation cancelled
-    a.completedContainer(clusterResource, app_0, node_0, 
+    rmContainer = app_0.getLiveContainers().iterator().next();
-        app_0.getLiveContainers().iterator().next(), 
+    a.completedContainer(clusterResource, app_0, node_0, rmContainer,
-        null, RMContainerEventType.KILL, null);
+        ContainerStatus.newInstance(rmContainer.getContainerId(),
+            ContainerState.COMPLETE, "",
+            ContainerExitStatus.KILLED_BY_RESOURCEMANAGER),
+        RMContainerEventType.KILL, null);
     CSAssignment assignment = a.assignContainers(clusterResource, node_0);
     assertEquals(8*GB, a.getUsedResources().getMemory());
     assertEquals(0*GB, app_0.getCurrentConsumption().getMemory());

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairSchedulerTestBase.java

@@ -17,6 +17,13 @@
  */
 package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair;
 
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
@@ -32,16 +39,14 @@ import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAddedSchedulerEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAttemptAddedSchedulerEvent;
 import org.apache.hadoop.yarn.server.utils.BuilderUtils;
 import org.apache.hadoop.yarn.util.Clock;
 
-import java.io.File;
-import java.util.ArrayList;
-import java.util.List;
-
 public class FairSchedulerTestBase {
   protected static class MockClock implements Clock {
     private long time = 0;
@@ -153,6 +158,13 @@ public class FairSchedulerTestBase {
         priority, numContainers, true);
     ask.add(request);
     scheduler.allocate(id, ask,  new ArrayList<ContainerId>(), null, null);
+    RMApp rmApp = mock(RMApp.class);
+    RMAppAttempt rmAppAttempt = mock(RMAppAttempt.class);
+    when(rmApp.getCurrentAppAttempt()).thenReturn(rmAppAttempt);
+    when(rmAppAttempt.getRMAppAttemptMetrics()).thenReturn(
+        new RMAppAttemptMetrics(id));
+    resourceManager.getRMContext().getRMApps()
+        .put(id.getApplicationId(), rmApp);
     return id;
   }
 

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

@@ -1310,33 +1310,44 @@ public class TestRMWebServicesApps extends JerseyTest {
           WebServicesTestUtils.getXmlString(element, "amContainerLogs"),
           WebServicesTestUtils.getXmlInt(element, "allocatedMB"),
           WebServicesTestUtils.getXmlInt(element, "allocatedVCores"),
-          WebServicesTestUtils.getXmlInt(element, "runningContainers"));
+          WebServicesTestUtils.getXmlInt(element, "runningContainers"),
+          WebServicesTestUtils.getXmlInt(element, "preemptedResourceMB"),
+          WebServicesTestUtils.getXmlInt(element, "preemptedResourceVCores"),
+          WebServicesTestUtils.getXmlInt(element, "numNonAMContainerPreempted"),
+          WebServicesTestUtils.getXmlInt(element, "numAMContainerPreempted"));
     }
   }
 
   public void verifyAppInfo(JSONObject info, RMApp app) throws JSONException,
       Exception {
 
-    // 20 because trackingUrl not assigned yet
+    // 28 because trackingUrl not assigned yet
-    assertEquals("incorrect number of elements", 20, info.length());
+    assertEquals("incorrect number of elements", 24, info.length());
 
     verifyAppInfoGeneric(app, info.getString("id"), info.getString("user"),
-      info.getString("name"), info.getString("applicationType"), info.getString("queue"),
+        info.getString("name"), info.getString("applicationType"),
-      info.getString("state"), info.getString("finalStatus"),
+        info.getString("queue"), info.getString("state"),
-      (float) info.getDouble("progress"), info.getString("trackingUI"),
+        info.getString("finalStatus"), (float) info.getDouble("progress"),
-      info.getString("diagnostics"), info.getLong("clusterId"),
+        info.getString("trackingUI"), info.getString("diagnostics"),
-      info.getLong("startedTime"), info.getLong("finishedTime"),
+        info.getLong("clusterId"), info.getLong("startedTime"),
-      info.getLong("elapsedTime"), info.getString("amHostHttpAddress"),
+        info.getLong("finishedTime"), info.getLong("elapsedTime"),
-      info.getString("amContainerLogs"), info.getInt("allocatedMB"),
+        info.getString("amHostHttpAddress"), info.getString("amContainerLogs"),
-      info.getInt("allocatedVCores"), info.getInt("runningContainers"));
+        info.getInt("allocatedMB"), info.getInt("allocatedVCores"),
+        info.getInt("runningContainers"), 
+        info.getInt("preemptedResourceMB"),
+        info.getInt("preemptedResourceVCores"),
+        info.getInt("numNonAMContainerPreempted"),
+        info.getInt("numAMContainerPreempted"));
   }
 
   public void verifyAppInfoGeneric(RMApp app, String id, String user,
-      String name, String applicationType, String queue, String state, String finalStatus,
+      String name, String applicationType, String queue, String state,
-      float progress, String trackingUI, String diagnostics, long clusterId,
+      String finalStatus, float progress, String trackingUI,
-      long startedTime, long finishedTime, long elapsedTime,
+      String diagnostics, long clusterId, long startedTime, long finishedTime,
-      String amHostHttpAddress, String amContainerLogs, int allocatedMB,
+      long elapsedTime, String amHostHttpAddress, String amContainerLogs,
-      int allocatedVCores, int numContainers) throws JSONException,
+      int allocatedMB, int allocatedVCores, int numContainers,
+      int preemptedResourceMB, int preemptedResourceVCores,
+      int numNonAMContainerPreempted, int numAMContainerPreempted) throws JSONException,
       Exception {
 
     WebServicesTestUtils.checkStringMatch("id", app.getApplicationId()
@@ -1371,6 +1382,18 @@ public class TestRMWebServicesApps extends JerseyTest {
     assertEquals("allocatedMB doesn't match", 1024, allocatedMB);
     assertEquals("allocatedVCores doesn't match", 1, allocatedVCores);
     assertEquals("numContainers doesn't match", 1, numContainers);
+    assertEquals("preemptedResourceMB doesn't match", app
+        .getRMAppMetrics().getResourcePreempted().getMemory(),
+        preemptedResourceMB);
+    assertEquals("preemptedResourceVCores doesn't match", app
+        .getRMAppMetrics().getResourcePreempted().getVirtualCores(),
+        preemptedResourceVCores);
+    assertEquals("numNonAMContainerPreempted doesn't match", app
+        .getRMAppMetrics().getNumNonAMContainersPreempted(),
+        numNonAMContainerPreempted);
+    assertEquals("numAMContainerPreempted doesn't match", app
+        .getRMAppMetrics().getNumAMContainersPreempted(),
+        numAMContainerPreempted);
   }
 
   @Test