MAPREDUCE-3568. Optimized Job's progress calculations in MR AM. (vinodkv)

svn merge -c 1224995 --ignore-ancestry ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1224996 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -96,6 +96,8 @@ Release 0.23.1 - Unreleased
     immediately after downloading a resource instead of always waiting for a
     second. (Siddarth Seth via vinodkv)
 
+    MAPREDUCE-3568. Optimized Job's progress calculations in MR AM. (vinodkv)
+
   BUG FIXES
     MAPREDUCE-2950. [Rumen] Fixed TestUserResolve. (Ravi Gummadi via amarrk)
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java

@@ -228,7 +228,7 @@ public class MRAppMaster extends CompositeService {
           + recoveryEnabled + " recoverySupportedByCommitter: "
           + recoverySupportedByCommitter + " ApplicationAttemptID: "
           + appAttemptID.getAttemptId());
-      dispatcher = new AsyncDispatcher();
+      dispatcher = createDispatcher();
       addIfService(dispatcher);
     }
 
@@ -291,6 +291,10 @@ public class MRAppMaster extends CompositeService {
     super.init(conf);
   } // end of init()
 
+  protected Dispatcher createDispatcher() {
+    return new AsyncDispatcher();
+  }
+
   private OutputCommitter createOutputCommitter(Configuration conf) {
     OutputCommitter committer = null;
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/Job.java

@@ -53,6 +53,7 @@ public interface Job {
   int getTotalReduces();
   int getCompletedMaps();
   int getCompletedReduces();
+  float getProgress();
   boolean isUber();
   String getUserName();
   String getQueueName();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/JobImpl.java

@@ -128,6 +128,10 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
   private final String username;
   private final OutputCommitter committer;
   private final Map<JobACL, AccessControlList> jobACLs;
+  private float setupWeight = 0.05f;
+  private float cleanupWeight = 0.05f;
+  private float mapWeight = 0.0f;
+  private float reduceWeight = 0.0f;
   private final Set<TaskId> completedTasksFromPreviousRun;
   private final List<AMInfo> amInfos;
   private final Lock readLock;
@@ -147,7 +151,7 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
   private final long appSubmitTime;
 
   private boolean lazyTasksCopyNeeded = false;
-  private volatile Map<TaskId, Task> tasks = new LinkedHashMap<TaskId, Task>();
+  volatile Map<TaskId, Task> tasks = new LinkedHashMap<TaskId, Task>();
   private Counters jobCounters = newCounters();
     // FIXME:  
     //
@@ -353,6 +357,8 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
   private long startTime;
   private long finishTime;
   private float setupProgress;
+  private float mapProgress;
+  private float reduceProgress;
   private float cleanupProgress;
   private boolean isUber = false;
 
@@ -587,30 +593,51 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
             cleanupProgress, remoteJobConfFile.toString(), amInfos, isUber);
       }
 
+      computeProgress();
       return MRBuilderUtils.newJobReport(jobId, jobName, username, state,
           appSubmitTime, startTime, finishTime, setupProgress,
-          computeProgress(mapTasks), computeProgress(reduceTasks),
+          this.mapProgress, this.reduceProgress,
           cleanupProgress, remoteJobConfFile.toString(), amInfos, isUber);
     } finally {
       readLock.unlock();
     }
   }
 
-  private float computeProgress(Set<TaskId> taskIds) {
+  @Override
-    readLock.lock();
+  public float getProgress() {
+    this.readLock.lock();
     try {
-      float progress = 0;
+      computeProgress();
-      for (TaskId taskId : taskIds) {
+      return (this.setupProgress * this.setupWeight + this.cleanupProgress
-        Task task = tasks.get(taskId);
+          * this.cleanupWeight + this.mapProgress * this.mapWeight + this.reduceProgress
-        progress += task.getProgress();
+          * this.reduceWeight);
-      }
-      int taskIdsSize = taskIds.size();
-      if (taskIdsSize != 0) {
-        progress = progress/taskIdsSize;
-      }
-      return progress;
     } finally {
-      readLock.unlock();
+      this.readLock.unlock();
+    }
+  }
+
+  private void computeProgress() {
+    this.readLock.lock();
+    try {
+      float mapProgress = 0f;
+      float reduceProgress = 0f;
+      for (Task task : this.tasks.values()) {
+        if (task.getType() == TaskType.MAP) {
+          mapProgress += task.getProgress();
+        } else {
+          reduceProgress += task.getProgress();
+        }
+      }
+      if (this.numMapTasks != 0) {
+        mapProgress = mapProgress / this.numMapTasks;
+      }
+      if (this.numReduceTasks != 0) {
+        reduceProgress = reduceProgress / this.numReduceTasks;
+      }
+      this.mapProgress = mapProgress;
+      this.reduceProgress = reduceProgress;
+    } finally {
+      this.readLock.unlock();
     }
   }
 
@@ -731,7 +758,7 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
   
   static JobState checkJobCompleteSuccess(JobImpl job) {
     // check for Job success
-    if (job.completedTaskCount == job.getTasks().size()) {
+    if (job.completedTaskCount == job.tasks.size()) {
       try {
         // Commit job & do cleanup
         job.getCommitter().commitJob(job.getJobContext());
@@ -970,6 +997,12 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
 
         if (job.numMapTasks == 0 && job.numReduceTasks == 0) {
           job.addDiagnostic("No of maps and reduces are 0 " + job.jobId);
+        } else if (job.numMapTasks == 0) {
+          job.reduceWeight = 0.9f;
+        } else if (job.numReduceTasks == 0) {
+          job.mapWeight = 0.9f;
+        } else {
+          job.mapWeight = job.reduceWeight = 0.45f;
         }
 
         checkTaskLimits();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TaskImpl.java

@@ -376,7 +376,7 @@ public abstract class TaskImpl implements Task, EventHandler<TaskEvent> {
     try {
       TaskAttempt bestAttempt = selectBestAttempt();
       if (bestAttempt == null) {
-        return 0;
+        return 0f;
       }
       return bestAttempt.getProgress();
     } finally {
@@ -457,9 +457,10 @@ public abstract class TaskImpl implements Task, EventHandler<TaskEvent> {
         result = at; //The first time around
       }
       // calculate the best progress
-      if (at.getProgress() > progress) {
+      float attemptProgress = at.getProgress();
+      if (attemptProgress > progress) {
         result = at;
-        progress = at.getProgress();
+        progress = attemptProgress;
       }
     }
     return result;

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMCommunicator.java

@@ -128,25 +128,7 @@ public abstract class RMCommunicator extends AbstractService  {
   protected float getApplicationProgress() {
     // For now just a single job. In future when we have a DAG, we need an
     // aggregate progress.
-    JobReport report = this.job.getReport();
+    return this.job.getProgress();
-    float setupWeight = 0.05f;
-    float cleanupWeight = 0.05f;
-    float mapWeight = 0.0f;
-    float reduceWeight = 0.0f;
-    int numMaps = this.job.getTotalMaps();
-    int numReduces = this.job.getTotalReduces();
-    if (numMaps == 0 && numReduces == 0) {
-    } else if (numMaps == 0) {
-      reduceWeight = 0.9f;
-    } else if (numReduces == 0) {
-      mapWeight = 0.9f;
-    } else {
-      mapWeight = reduceWeight = 0.45f;
-    }
-    return (report.getSetupProgress() * setupWeight
-        + report.getCleanupProgress() * cleanupWeight
-        + report.getMapProgress() * mapWeight + report.getReduceProgress()
-        * reduceWeight);
   }
 
   protected void register() {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerRequestor.java

@@ -161,7 +161,7 @@ public abstract class RMContainerRequestor extends RMCommunicator {
         " finishedContainers=" + 
         response.getCompletedContainersStatuses().size() + 
         " resourcelimit=" + availableResources + 
-        "knownNMs=" + clusterNmCount);
+        " knownNMs=" + clusterNmCount);
 
     ask.clear();
     release.clear();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/MRApp.java

@@ -115,7 +115,8 @@ public class MRApp extends MRAppMaster {
     applicationId.setId(0);
   }
 
-  public MRApp(int maps, int reduces, boolean autoComplete, String testName, boolean cleanOnStart) {
+  public MRApp(int maps, int reduces, boolean autoComplete, String testName,
+      boolean cleanOnStart) {
     this(maps, reduces, autoComplete, testName, cleanOnStart, 1);
   }
   
@@ -143,8 +144,15 @@ public class MRApp extends MRAppMaster {
 
   public MRApp(int maps, int reduces, boolean autoComplete, String testName,
       boolean cleanOnStart, int startCount) {
-    super(getApplicationAttemptId(applicationId, startCount), getContainerId(
+    this(getApplicationAttemptId(applicationId, startCount), getContainerId(
-        applicationId, startCount), NM_HOST, NM_PORT, NM_HTTP_PORT, System
+      applicationId, startCount), maps, reduces, autoComplete, testName,
+      cleanOnStart, startCount);
+  }
+
+  public MRApp(ApplicationAttemptId appAttemptId, ContainerId amContainerId,
+      int maps, int reduces, boolean autoComplete, String testName,
+      boolean cleanOnStart, int startCount) {
+    super(appAttemptId, amContainerId, NM_HOST, NM_PORT, NM_HTTP_PORT, System
         .currentTimeMillis());
     this.testWorkDir = new File("target", testName);
     testAbsPath = new Path(testWorkDir.getAbsolutePath());
@@ -205,9 +213,9 @@ public class MRApp extends MRAppMaster {
     TaskReport report = task.getReport();
     while (!finalState.equals(report.getTaskState()) &&
         timeoutSecs++ < 20) {
-      System.out.println("Task State is : " + report.getTaskState() +
+      System.out.println("Task State for " + task.getID() + " is : "
-          " Waiting for state : " + finalState +
+          + report.getTaskState() + " Waiting for state : " + finalState
-          "   progress : " + report.getProgress());
+          + "   progress : " + report.getProgress());
       report = task.getReport();
       Thread.sleep(500);
     }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/MockJobs.java

@@ -425,6 +425,11 @@ public class MockJobs extends MockApps {
         return report;
       }
 
+      @Override
+      public float getProgress() {
+        return 0;
+      }
+
       @Override
       public Counters getCounters() {
         return counters;

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java

@@ -26,6 +26,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
@@ -36,15 +37,20 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.JobId;
-import org.apache.hadoop.mapreduce.v2.api.records.JobReport;
 import org.apache.hadoop.mapreduce.v2.api.records.JobState;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId;
+import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptState;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskId;
+import org.apache.hadoop.mapreduce.v2.api.records.TaskState;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskType;
 import org.apache.hadoop.mapreduce.v2.app.client.ClientService;
 import org.apache.hadoop.mapreduce.v2.app.job.Job;
+import org.apache.hadoop.mapreduce.v2.app.job.Task;
+import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt;
 import org.apache.hadoop.mapreduce.v2.app.job.event.TaskAttemptContainerAssignedEvent;
-import org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl;
+import org.apache.hadoop.mapreduce.v2.app.job.event.TaskAttemptEvent;
+import org.apache.hadoop.mapreduce.v2.app.job.event.TaskAttemptEventType;
+import org.apache.hadoop.mapreduce.v2.app.rm.ContainerAllocator;
 import org.apache.hadoop.mapreduce.v2.app.rm.ContainerFailedEvent;
 import org.apache.hadoop.mapreduce.v2.app.rm.ContainerRequestEvent;
 import org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator;
@@ -78,6 +84,7 @@ import org.apache.hadoop.yarn.util.BuilderUtils;
 import org.junit.After;
 import org.junit.Test;
 
+@SuppressWarnings("unchecked")
 public class TestRMContainerAllocator {
 
   static final Log LOG = LogFactory
@@ -338,98 +345,155 @@ public class TestRMContainerAllocator {
     }
   }
 
-  private static class FakeJob extends JobImpl {
-
-    public FakeJob(ApplicationAttemptId appAttemptID, Configuration conf,
-        int numMaps, int numReduces) {
-      super(MRBuilderUtils.newJobId(appAttemptID.getApplicationId(), 0),
-          appAttemptID, conf, null, null, null, null, null, null, null, null,
-          true, null, System.currentTimeMillis(), null);
-      this.jobId = getID();
-      this.numMaps = numMaps;
-      this.numReduces = numReduces;
-    }
-
-    private float setupProgress;
-    private float mapProgress;
-    private float reduceProgress;
-    private float cleanupProgress;
-    private final int numMaps;
-    private final int numReduces;
-    private JobId jobId;
-
-    void setProgress(float setupProgress, float mapProgress,
-        float reduceProgress, float cleanupProgress) {
-      this.setupProgress = setupProgress;
-      this.mapProgress = mapProgress;
-      this.reduceProgress = reduceProgress;
-      this.cleanupProgress = cleanupProgress;
-    }
-
-    @Override
-    public int getTotalMaps() { return this.numMaps; }
-    @Override
-    public int getTotalReduces() { return this.numReduces;}
-
-    @Override
-    public JobReport getReport() {
-      return MRBuilderUtils.newJobReport(this.jobId, "job", "user",
-          JobState.RUNNING, 0, 0, 0, this.setupProgress, this.mapProgress,
-          this.reduceProgress, this.cleanupProgress, "jobfile", null, false);
-    }
-  }
-
   @Test
   public void testReportedAppProgress() throws Exception {
 
     LOG.info("Running testReportedAppProgress");
 
     Configuration conf = new Configuration();
-    MyResourceManager rm = new MyResourceManager(conf);
+    final MyResourceManager rm = new MyResourceManager(conf);
     rm.start();
-    DrainDispatcher dispatcher = (DrainDispatcher) rm.getRMContext()
+    DrainDispatcher rmDispatcher = (DrainDispatcher) rm.getRMContext()
         .getDispatcher();
 
     // Submit the application
-    RMApp app = rm.submitApp(1024);
+    RMApp rmApp = rm.submitApp(1024);
-    dispatcher.await();
+    rmDispatcher.await();
 
-    MockNM amNodeManager = rm.registerNode("amNM:1234", 2048);
+    MockNM amNodeManager = rm.registerNode("amNM:1234", 21504);
     amNodeManager.nodeHeartbeat(true);
-    dispatcher.await();
+    rmDispatcher.await();
 
-    ApplicationAttemptId appAttemptId = app.getCurrentAppAttempt()
+    final ApplicationAttemptId appAttemptId = rmApp.getCurrentAppAttempt()
         .getAppAttemptId();
     rm.sendAMLaunched(appAttemptId);
-    dispatcher.await();
+    rmDispatcher.await();
 
-    FakeJob job = new FakeJob(appAttemptId, conf, 2, 2);
+    MRApp mrApp = new MRApp(appAttemptId, BuilderUtils.newContainerId(
-    MyContainerAllocator allocator = new MyContainerAllocator(rm, conf,
+      appAttemptId, 0), 10, 10, false, this.getClass().getName(), true, 1) {
-        appAttemptId, job);
+      @Override
+      protected Dispatcher createDispatcher() {
+        return new DrainDispatcher();
+      }
+      protected ContainerAllocator createContainerAllocator(
+          ClientService clientService, AppContext context) {
+        return new MyContainerAllocator(rm, appAttemptId, context);
+      };
+    };
+
+    Assert.assertEquals(0.0, rmApp.getProgress(), 0.0);
+
+    mrApp.submit(conf);
+    Job job = mrApp.getContext().getAllJobs().entrySet().iterator().next()
+        .getValue();
+
+    DrainDispatcher amDispatcher = (DrainDispatcher) mrApp.getDispatcher();
+
+    MyContainerAllocator allocator = (MyContainerAllocator) mrApp
+      .getContainerAllocator();
+
+    mrApp.waitForState(job, JobState.RUNNING);
+
+    amDispatcher.await();
+    // Wait till all map-attempts request for containers
+    for (Task t : job.getTasks().values()) {
+      if (t.getType() == TaskType.MAP) {
+        mrApp.waitForState(t.getAttempts().values().iterator().next(),
+          TaskAttemptState.UNASSIGNED);
+      }
+    }
+    amDispatcher.await();
+
+    allocator.schedule();
+    rmDispatcher.await();
+    amNodeManager.nodeHeartbeat(true);
+    rmDispatcher.await();
+    allocator.schedule();
+    rmDispatcher.await();
+
+    // Wait for all map-tasks to be running
+    for (Task t : job.getTasks().values()) {
+      if (t.getType() == TaskType.MAP) {
+        mrApp.waitForState(t, TaskState.RUNNING);
+      }
+    }
 
     allocator.schedule(); // Send heartbeat
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(0.0, app.getProgress(), 0.0);
+    Assert.assertEquals(0.05f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.05f, rmApp.getProgress(), 0.001f);
 
-    job.setProgress(100, 10, 0, 0);
+    // Finish off 1 map.
+    Iterator<Task> it = job.getTasks().values().iterator();
+    finishNextNTasks(mrApp, it, 1);
     allocator.schedule();
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(9.5f, app.getProgress(), 0.0);
+    Assert.assertEquals(0.095f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.095f, rmApp.getProgress(), 0.001f);
 
-    job.setProgress(100, 80, 0, 0);
+    // Finish off 7 more so that map-progress is 80%
+    finishNextNTasks(mrApp, it, 7);
     allocator.schedule();
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(41.0f, app.getProgress(), 0.0);
+    Assert.assertEquals(0.41f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.41f, rmApp.getProgress(), 0.001f);
 
-    job.setProgress(100, 100, 20, 0);
+    // Finish off the 2 remaining maps
-    allocator.schedule();
+    finishNextNTasks(mrApp, it, 2);
-    dispatcher.await();
+
-    Assert.assertEquals(59.0f, app.getProgress(), 0.0);
+    // Wait till all reduce-attempts request for containers
+    for (Task t : job.getTasks().values()) {
+      if (t.getType() == TaskType.REDUCE) {
+        mrApp.waitForState(t.getAttempts().values().iterator().next(),
+          TaskAttemptState.UNASSIGNED);
+      }
+    }
 
-    job.setProgress(100, 100, 100, 100);
     allocator.schedule();
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(100.0f, app.getProgress(), 0.0);
+    amNodeManager.nodeHeartbeat(true);
+    rmDispatcher.await();
+    allocator.schedule();
+    rmDispatcher.await();
+
+    // Wait for all reduce-tasks to be running
+    for (Task t : job.getTasks().values()) {
+      if (t.getType() == TaskType.REDUCE) {
+        mrApp.waitForState(t, TaskState.RUNNING);
+      }
+    }
+
+    // Finish off 2 reduces
+    finishNextNTasks(mrApp, it, 2);
+
+    allocator.schedule();
+    rmDispatcher.await();
+    Assert.assertEquals(0.59f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.59f, rmApp.getProgress(), 0.001f);
+
+    // Finish off the remaining 8 reduces.
+    finishNextNTasks(mrApp, it, 8);
+    allocator.schedule();
+    rmDispatcher.await();
+    // Remaining is JobCleanup
+    Assert.assertEquals(0.95f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.95f, rmApp.getProgress(), 0.001f);
+  }
+
+  private void finishNextNTasks(MRApp mrApp, Iterator<Task> it, int nextN)
+      throws Exception {
+    Task task;
+    for (int i=0; i<nextN; i++) {
+      task = it.next();
+      finishTask(mrApp, task);
+    }
+  }
+
+  private void finishTask(MRApp mrApp, Task task) throws Exception {
+    TaskAttempt attempt = task.getAttempts().values().iterator().next();
+    mrApp.getContext().getEventHandler().handle(
+        new TaskAttemptEvent(attempt.getID(), TaskAttemptEventType.TA_DONE));
+    mrApp.waitForState(task, TaskState.SUCCEEDED);
   }
 
   @Test
@@ -438,46 +502,96 @@ public class TestRMContainerAllocator {
     LOG.info("Running testReportedAppProgressWithOnlyMaps");
 
     Configuration conf = new Configuration();
-    MyResourceManager rm = new MyResourceManager(conf);
+    final MyResourceManager rm = new MyResourceManager(conf);
     rm.start();
-    DrainDispatcher dispatcher = (DrainDispatcher) rm.getRMContext()
+    DrainDispatcher rmDispatcher = (DrainDispatcher) rm.getRMContext()
         .getDispatcher();
 
     // Submit the application
-    RMApp app = rm.submitApp(1024);
+    RMApp rmApp = rm.submitApp(1024);
-    dispatcher.await();
+    rmDispatcher.await();
 
-    MockNM amNodeManager = rm.registerNode("amNM:1234", 2048);
+    MockNM amNodeManager = rm.registerNode("amNM:1234", 11264);
     amNodeManager.nodeHeartbeat(true);
-    dispatcher.await();
+    rmDispatcher.await();
 
-    ApplicationAttemptId appAttemptId = app.getCurrentAppAttempt()
+    final ApplicationAttemptId appAttemptId = rmApp.getCurrentAppAttempt()
         .getAppAttemptId();
     rm.sendAMLaunched(appAttemptId);
-    dispatcher.await();
+    rmDispatcher.await();
 
-    FakeJob job = new FakeJob(appAttemptId, conf, 2, 0);
+    MRApp mrApp = new MRApp(appAttemptId, BuilderUtils.newContainerId(
-    MyContainerAllocator allocator = new MyContainerAllocator(rm, conf,
+      appAttemptId, 0), 10, 0, false, this.getClass().getName(), true, 1) {
-        appAttemptId, job);
+      @Override
+        protected Dispatcher createDispatcher() {
+          return new DrainDispatcher();
+        }
+      protected ContainerAllocator createContainerAllocator(
+          ClientService clientService, AppContext context) {
+        return new MyContainerAllocator(rm, appAttemptId, context);
+      };
+    };
+
+    Assert.assertEquals(0.0, rmApp.getProgress(), 0.0);
+
+    mrApp.submit(conf);
+    Job job = mrApp.getContext().getAllJobs().entrySet().iterator().next()
+        .getValue();
+
+    DrainDispatcher amDispatcher = (DrainDispatcher) mrApp.getDispatcher();
+
+    MyContainerAllocator allocator = (MyContainerAllocator) mrApp
+      .getContainerAllocator();
+
+    mrApp.waitForState(job, JobState.RUNNING);
+
+    amDispatcher.await();
+    // Wait till all map-attempts request for containers
+    for (Task t : job.getTasks().values()) {
+      mrApp.waitForState(t.getAttempts().values().iterator().next(),
+        TaskAttemptState.UNASSIGNED);
+    }
+    amDispatcher.await();
+
+    allocator.schedule();
+    rmDispatcher.await();
+    amNodeManager.nodeHeartbeat(true);
+    rmDispatcher.await();
+    allocator.schedule();
+    rmDispatcher.await();
+
+    // Wait for all map-tasks to be running
+    for (Task t : job.getTasks().values()) {
+      mrApp.waitForState(t, TaskState.RUNNING);
+    }
 
     allocator.schedule(); // Send heartbeat
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(0.0, app.getProgress(), 0.0);
+    Assert.assertEquals(0.05f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.05f, rmApp.getProgress(), 0.001f);
 
-    job.setProgress(100, 10, 0, 0);
+    Iterator<Task> it = job.getTasks().values().iterator();
-    allocator.schedule();
-    dispatcher.await();
-    Assert.assertEquals(14f, app.getProgress(), 0.0);
 
-    job.setProgress(100, 60, 0, 0);
+    // Finish off 1 map so that map-progress is 10%
+    finishNextNTasks(mrApp, it, 1);
     allocator.schedule();
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(59.0f, app.getProgress(), 0.0);
+    Assert.assertEquals(0.14f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.14f, rmApp.getProgress(), 0.001f);
 
-    job.setProgress(100, 100, 0, 100);
+    // Finish off 5 more map so that map-progress is 60%
+    finishNextNTasks(mrApp, it, 5);
     allocator.schedule();
-    dispatcher.await();
+    rmDispatcher.await();
-    Assert.assertEquals(100.0f, app.getProgress(), 0.0);
+    Assert.assertEquals(0.59f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.59f, rmApp.getProgress(), 0.001f);
+
+    // Finish off remaining map so that map-progress is 100%
+    finishNextNTasks(mrApp, it, 4);
+    allocator.schedule();
+    rmDispatcher.await();
+    Assert.assertEquals(0.95f, job.getProgress(), 0.001f);
+    Assert.assertEquals(0.95f, rmApp.getProgress(), 0.001f);
   }
 
   @Test
@@ -1000,7 +1114,6 @@ public class TestRMContainerAllocator {
 
     private MyResourceManager rm;
 
-    @SuppressWarnings("rawtypes")
     private static AppContext createAppContext(
         ApplicationAttemptId appAttemptId, Job job) {
       AppContext context = mock(AppContext.class);
@@ -1028,7 +1141,15 @@ public class TestRMContainerAllocator {
       return service;
     }
 
-    MyContainerAllocator(MyResourceManager rm, Configuration conf,
+    // Use this constructor when using a real job.
+    MyContainerAllocator(MyResourceManager rm,
+        ApplicationAttemptId appAttemptId, AppContext context) {
+      super(createMockClientService(), context);
+      this.rm = rm;
+    }
+
+    // Use this constructor when you are using a mocked job.
+    public MyContainerAllocator(MyResourceManager rm, Configuration conf,
         ApplicationAttemptId appAttemptId, Job job) {
       super(createMockClientService(), createAppContext(appAttemptId, job));
       this.rm = rm;
@@ -1090,6 +1211,7 @@ public class TestRMContainerAllocator {
       return result;
     }
 
+    @Override
     protected void startAllocatorThread() {
       // override to NOT start thread
     }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRuntimeEstimators.java

@@ -393,6 +393,11 @@ public class TestRuntimeEstimators {
       throw new UnsupportedOperationException("Not supported yet.");
     }
 
+    @Override
+    public float getProgress() {
+      return 0;
+    }
+
     @Override
     public Counters getCounters() {
       throw new UnsupportedOperationException("Not supported yet.");

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestJobImpl.java

@@ -65,7 +65,7 @@ public class TestJobImpl {
     Task mockTask = mock(Task.class);
     Map<TaskId, Task> tasks = new HashMap<TaskId, Task>();
     tasks.put(mockTask.getID(), mockTask);
-    when(mockJob.getTasks()).thenReturn(tasks);
+    mockJob.tasks = tasks;
 
     when(mockJob.getState()).thenReturn(JobState.ERROR);
     JobEvent mockJobEvent = mock(JobEvent.class);
@@ -78,6 +78,7 @@ public class TestJobImpl {
   public void testCheckJobCompleteSuccess() {
     
     JobImpl mockJob = mock(JobImpl.class);
+    mockJob.tasks = new HashMap<TaskId, Task>();
     OutputCommitter mockCommitter = mock(OutputCommitter.class);
     EventHandler mockEventHandler = mock(EventHandler.class);
     JobContext mockJobContext = mock(JobContext.class);
@@ -110,7 +111,7 @@ public class TestJobImpl {
     Task mockTask = mock(Task.class);
     Map<TaskId, Task> tasks = new HashMap<TaskId, Task>();
     tasks.put(mockTask.getID(), mockTask);
-    when(mockJob.getTasks()).thenReturn(tasks);
+    mockJob.tasks = tasks;
     
     try {
       // Just in case the code breaks and reaches these calls

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/CompletedJob.java

@@ -135,6 +135,11 @@ public class CompletedJob implements org.apache.hadoop.mapreduce.v2.app.job.Job
     return report;
   }
 
+  @Override
+  public float getProgress() {
+    return 1.0f;
+  }
+
   @Override
   public JobState getState() {
     return report.getJobState();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/PartialJob.java

@@ -89,6 +89,11 @@ public class PartialJob implements org.apache.hadoop.mapreduce.v2.app.job.Job {
     return jobReport;
   }
 
+  @Override
+  public float getProgress() {
+    return 1.0f;
+  }
+
   @Override
   public Counters getCounters() {
     return null;