MAPREDUCE-5152. Make MR App to simply pass through the container from RM instead of extracting and populating information itself to start any container. Contributed by Vinod Kumar Vavilapalli.

svn merge --ignore-ancestry -c 1469544 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1469545 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -43,6 +43,10 @@ Release 2.0.5-beta - UNRELEASED
     MAPREDUCE-4985. Add compression option to TestDFSIO usage.
     (Plamen Jeliazkov via shv)
 
+    MAPREDUCE-5152. Make MR App to simply pass through the container from RM
+    instead of extracting and populating information itself to start any
+    container. (vinodkv)
+
   OPTIMIZATIONS
 
     MAPREDUCE-4974. Optimising the LineRecordReader initialize() method 

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

@@ -117,7 +117,6 @@ import org.apache.hadoop.yarn.api.records.ApplicationAccessType;
 import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
-import org.apache.hadoop.yarn.api.records.ContainerToken;
 import org.apache.hadoop.yarn.api.records.LocalResource;
 import org.apache.hadoop.yarn.api.records.LocalResourceType;
 import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
@@ -490,14 +489,10 @@ public abstract class TaskAttemptImpl implements
          <TaskAttemptStateInternal, TaskAttemptEventType, TaskAttemptEvent>
     stateMachine;
 
-  private ContainerId containerID;
+  @VisibleForTesting
-  private NodeId containerNodeId;
+  public Container container;
-  private String containerMgrAddress;
-  private String nodeHttpAddress;
   private String nodeRackName;
   private WrappedJvmID jvmID;
-  private ContainerToken containerToken;
-  private Resource assignedCapability;
   
   //this takes good amount of memory ~ 30KB. Instantiate it lazily
   //and make it null once task is launched.
@@ -825,7 +820,7 @@ public abstract class TaskAttemptImpl implements
   public ContainerId getAssignedContainerID() {
     readLock.lock();
     try {
-      return containerID;
+      return container == null ? null : container.getId();
     } finally {
       readLock.unlock();
     }
@@ -835,7 +830,8 @@ public abstract class TaskAttemptImpl implements
   public String getAssignedContainerMgrAddress() {
     readLock.lock();
     try {
-      return containerMgrAddress;
+      return container == null ? null : StringInterner.weakIntern(container
+        .getNodeId().toString());
     } finally {
       readLock.unlock();
     }
@@ -895,7 +891,7 @@ public abstract class TaskAttemptImpl implements
   public NodeId getNodeId() {
     readLock.lock();
     try {
-      return containerNodeId;
+      return container == null ? null : container.getNodeId();
     } finally {
       readLock.unlock();
     }
@@ -907,7 +903,7 @@ public abstract class TaskAttemptImpl implements
   public String getNodeHttpAddress() {
     readLock.lock();
     try {
-      return nodeHttpAddress;
+      return container == null ? null : container.getNodeHttpAddress();
     } finally {
       readLock.unlock();
     }
@@ -967,8 +963,8 @@ public abstract class TaskAttemptImpl implements
       result.setContainerId(this.getAssignedContainerID());
       result.setNodeManagerHost(trackerName);
       result.setNodeManagerHttpPort(httpPort);
-      if (this.containerNodeId != null) {
+      if (this.container != null) {
-        result.setNodeManagerPort(this.containerNodeId.getPort());
+        result.setNodeManagerPort(this.container.getNodeId().getPort());
       }
       return result;
     } finally {
@@ -1093,13 +1089,17 @@ public abstract class TaskAttemptImpl implements
   @SuppressWarnings("unchecked")
   public TaskAttemptStateInternal recover(TaskAttemptInfo taInfo,
       OutputCommitter committer, boolean recoverOutput) {
-    containerID = taInfo.getContainerId();
+    ContainerId containerId = taInfo.getContainerId();
-    containerNodeId = ConverterUtils.toNodeId(taInfo.getHostname() + ":"
+    NodeId containerNodeId = ConverterUtils.toNodeId(taInfo.getHostname() + ":"
         + taInfo.getPort());
-    containerMgrAddress = StringInterner.weakIntern(
+    String nodeHttpAddress = StringInterner.weakIntern(taInfo.getHostname() + ":"
-        containerNodeId.toString());
-    nodeHttpAddress = StringInterner.weakIntern(taInfo.getHostname() + ":"
         + taInfo.getHttpPort());
+    // Resource/Priority/Tokens are only needed while launching the
+    // container on an NM, these are already completed tasks, so setting them to
+    // null
+    container =
+        BuilderUtils.newContainer(containerId, containerNodeId,
+          nodeHttpAddress, null, null, null);
     computeRackAndLocality();
     launchTime = taInfo.getStartTime();
     finishTime = (taInfo.getFinishTime() != -1) ?
@@ -1227,6 +1227,7 @@ public abstract class TaskAttemptImpl implements
   }
 
   private void computeRackAndLocality() {
+    NodeId containerNodeId = container.getNodeId();
     nodeRackName = RackResolver.resolve(
         containerNodeId.getHost()).getNetworkLocation();
 
@@ -1331,10 +1332,10 @@ public abstract class TaskAttemptImpl implements
             TypeConverter.fromYarn(taskAttempt.attemptId.getTaskId()
                 .getTaskType()), attemptState.toString(),
             taskAttempt.finishTime,
-            taskAttempt.containerNodeId == null ? "UNKNOWN"
+            taskAttempt.container == null ? "UNKNOWN"
-                : taskAttempt.containerNodeId.getHost(),
+                : taskAttempt.container.getNodeId().getHost(),
-            taskAttempt.containerNodeId == null ? -1 
+            taskAttempt.container == null ? -1 
-                : taskAttempt.containerNodeId.getPort(),    
+                : taskAttempt.container.getNodeId().getPort(),    
             taskAttempt.nodeRackName == null ? "UNKNOWN" 
                 : taskAttempt.nodeRackName,
             StringUtils.join(
@@ -1353,12 +1354,12 @@ public abstract class TaskAttemptImpl implements
     eventHandler.handle(jce);
 
     LOG.info("TaskAttempt: [" + attemptId
-        + "] using containerId: [" + containerID + " on NM: ["
+        + "] using containerId: [" + container.getId() + " on NM: ["
-        + containerMgrAddress + "]");
+        + StringInterner.weakIntern(container.getNodeId().toString()) + "]");
     TaskAttemptStartedEvent tase =
       new TaskAttemptStartedEvent(TypeConverter.fromYarn(attemptId),
           TypeConverter.fromYarn(attemptId.getTaskId().getTaskType()),
-          launchTime, trackerName, httpPort, shufflePort, containerID,
+          launchTime, trackerName, httpPort, shufflePort, container.getId(),
           locality.toString(), avataar.toString());
     eventHandler.handle(
         new JobHistoryEvent(attemptId.getTaskId().getJobId(), tase));
@@ -1490,19 +1491,14 @@ public abstract class TaskAttemptImpl implements
         TaskAttemptEvent event) {
       final TaskAttemptContainerAssignedEvent cEvent = 
         (TaskAttemptContainerAssignedEvent) event;
-      taskAttempt.containerID = cEvent.getContainer().getId();
+      Container container = cEvent.getContainer();
-      taskAttempt.containerNodeId = cEvent.getContainer().getNodeId();
+      taskAttempt.container = container;
-      taskAttempt.containerMgrAddress = StringInterner.weakIntern(
-          taskAttempt.containerNodeId.toString());
-      taskAttempt.nodeHttpAddress = StringInterner.weakIntern(
-          cEvent.getContainer().getNodeHttpAddress());
-      taskAttempt.containerToken = cEvent.getContainer().getContainerToken();
-      taskAttempt.assignedCapability = cEvent.getContainer().getResource();
       // this is a _real_ Task (classic Hadoop mapred flavor):
       taskAttempt.remoteTask = taskAttempt.createRemoteTask();
-      taskAttempt.jvmID = new WrappedJvmID(
+      taskAttempt.jvmID =
-          taskAttempt.remoteTask.getTaskID().getJobID(), 
+          new WrappedJvmID(taskAttempt.remoteTask.getTaskID().getJobID(),
-          taskAttempt.remoteTask.isMapTask(), taskAttempt.containerID.getId());
+            taskAttempt.remoteTask.isMapTask(), taskAttempt.container.getId()
+              .getId());
       taskAttempt.taskAttemptListener.registerPendingTask(
           taskAttempt.remoteTask, taskAttempt.jvmID);
 
@@ -1514,10 +1510,9 @@ public abstract class TaskAttemptImpl implements
           cEvent.getApplicationACLs(), taskAttempt.conf, taskAttempt.jobToken,
           taskAttempt.remoteTask, taskAttempt.oldJobId, taskAttempt.jvmID,
           taskAttempt.taskAttemptListener, taskAttempt.credentials);
-      taskAttempt.eventHandler.handle(new ContainerRemoteLaunchEvent(
+      taskAttempt.eventHandler
-          taskAttempt.attemptId, taskAttempt.containerID,
+        .handle(new ContainerRemoteLaunchEvent(taskAttempt.attemptId,
-          taskAttempt.containerMgrAddress, taskAttempt.containerToken,
+          launchContext, container, taskAttempt.remoteTask));
-          launchContext, taskAttempt.assignedCapability, taskAttempt.remoteTask));
 
       // send event to speculator that our container needs are satisfied
       taskAttempt.eventHandler.handle
@@ -1604,9 +1599,8 @@ public abstract class TaskAttemptImpl implements
       taskAttempt.taskAttemptListener
         .registerLaunchedTask(taskAttempt.attemptId, taskAttempt.jvmID);
       //TODO Resolve to host / IP in case of a local address.
-      InetSocketAddress nodeHttpInetAddr =
+      InetSocketAddress nodeHttpInetAddr = // TODO: Costly to create sock-addr?
-          NetUtils.createSocketAddr(taskAttempt.nodeHttpAddress); // TODO:
+          NetUtils.createSocketAddr(taskAttempt.container.getNodeHttpAddress());
-                                                                  // Costly?
       taskAttempt.trackerName = nodeHttpInetAddr.getHostName();
       taskAttempt.httpPort = nodeHttpInetAddr.getPort();
       taskAttempt.sendLaunchedEvents();
@@ -1713,6 +1707,10 @@ public abstract class TaskAttemptImpl implements
   private void logAttemptFinishedEvent(TaskAttemptStateInternal state) {
     //Log finished events only if an attempt started.
     if (getLaunchTime() == 0) return; 
+    String containerHostName = this.container == null ? "UNKNOWN"
+         : this.container.getNodeId().getHost();
+    int containerNodePort =
+        this.container == null ? -1 : this.container.getNodeId().getPort();
     if (attemptId.getTaskId().getTaskType() == TaskType.MAP) {
       MapAttemptFinishedEvent mfe =
          new MapAttemptFinishedEvent(TypeConverter.fromYarn(attemptId),
@@ -1720,9 +1718,8 @@ public abstract class TaskAttemptImpl implements
          state.toString(),
          this.reportedStatus.mapFinishTime,
          finishTime,
-         this.containerNodeId == null ? "UNKNOWN"
+         containerHostName,
-             : this.containerNodeId.getHost(),
+         containerNodePort,
-         this.containerNodeId == null ? -1 : this.containerNodeId.getPort(),
          this.nodeRackName == null ? "UNKNOWN" : this.nodeRackName,
          this.reportedStatus.stateString,
          getCounters(),
@@ -1737,9 +1734,8 @@ public abstract class TaskAttemptImpl implements
          this.reportedStatus.shuffleFinishTime,
          this.reportedStatus.sortFinishTime,
          finishTime,
-         this.containerNodeId == null ? "UNKNOWN"
+         containerHostName,
-             : this.containerNodeId.getHost(),
+         containerNodePort,
-         this.containerNodeId == null ? -1 : this.containerNodeId.getPort(),
          this.nodeRackName == null ? "UNKNOWN" : this.nodeRackName,
          this.reportedStatus.stateString,
          getCounters(),
@@ -1864,8 +1860,9 @@ public abstract class TaskAttemptImpl implements
       //send the cleanup event to containerLauncher
       taskAttempt.eventHandler.handle(new ContainerLauncherEvent(
           taskAttempt.attemptId, 
-          taskAttempt.containerID, taskAttempt.containerMgrAddress,
+          taskAttempt.container.getId(), StringInterner
-          taskAttempt.containerToken,
+              .weakIntern(taskAttempt.container.getNodeId().toString()),
+          taskAttempt.container.getContainerToken(),
           ContainerLauncher.EventType.CONTAINER_REMOTE_CLEANUP));
     }
   }

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

@@ -59,7 +59,6 @@ import org.apache.hadoop.yarn.api.records.ContainerToken;
 import org.apache.hadoop.yarn.ipc.YarnRPC;
 import org.apache.hadoop.yarn.security.ContainerTokenIdentifier;
 import org.apache.hadoop.yarn.service.AbstractService;
-import org.apache.hadoop.yarn.util.BuilderUtils;
 import org.apache.hadoop.yarn.util.ProtoUtils;
 import org.apache.hadoop.yarn.util.Records;
 
@@ -149,16 +148,13 @@ public class ContainerLauncherImpl extends AbstractService implements
 
         // Construct the actual Container
         ContainerLaunchContext containerLaunchContext =
-          event.getContainer();
+          event.getContainerLaunchContext();
 
-        org.apache.hadoop.yarn.api.records.Container container =
-            BuilderUtils.newContainer(containerID, null, null,
-                event.getResource(), null, containerToken);
         // Now launch the actual container
         StartContainerRequest startRequest = Records
           .newRecord(StartContainerRequest.class);
         startRequest.setContainerLaunchContext(containerLaunchContext);
-        startRequest.setContainer(container);
+        startRequest.setContainer(event.getAllocatedContainer());
         StartContainerResponse response = proxy.startContainer(startRequest);
 
         ByteBuffer portInfo = response

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

@@ -20,35 +20,34 @@ package org.apache.hadoop.mapreduce.v2.app.launcher;
 
 import org.apache.hadoop.mapred.Task;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId;
-import org.apache.hadoop.yarn.api.records.ContainerId;
+import org.apache.hadoop.util.StringInterner;
+import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
-import org.apache.hadoop.yarn.api.records.ContainerToken;
-import org.apache.hadoop.yarn.api.records.Resource;
 
 public class ContainerRemoteLaunchEvent extends ContainerLauncherEvent {
 
-  private final ContainerLaunchContext container;
+  private final Container allocatedContainer;
+  private final ContainerLaunchContext containerLaunchContext;
   private final Task task;
-  private final Resource resource;
 
   public ContainerRemoteLaunchEvent(TaskAttemptId taskAttemptID,
-      ContainerId containerID, String containerMgrAddress,
+      ContainerLaunchContext containerLaunchContext,
-      ContainerToken containerToken,
+      Container allocatedContainer, Task remoteTask) {
-      ContainerLaunchContext containerLaunchContext, Resource resource,
+    super(taskAttemptID, allocatedContainer.getId(), StringInterner
-      Task remoteTask) {
+      .weakIntern(allocatedContainer.getNodeId().toString()),
-    super(taskAttemptID, containerID, containerMgrAddress, containerToken,
+      allocatedContainer.getContainerToken(),
-        ContainerLauncher.EventType.CONTAINER_REMOTE_LAUNCH);
+      ContainerLauncher.EventType.CONTAINER_REMOTE_LAUNCH);
-    this.container = containerLaunchContext;
+    this.allocatedContainer = allocatedContainer;
+    this.containerLaunchContext = containerLaunchContext;
     this.task = remoteTask;
-    this.resource = resource;
   }
 
-  public ContainerLaunchContext getContainer() {
+  public ContainerLaunchContext getContainerLaunchContext() {
-    return this.container;
+    return this.containerLaunchContext;
   }
 
-  public Resource getResource() {
+  public Container getAllocatedContainer() {
-    return this.resource;
+    return this.allocatedContainer;
   }
 
   public Task getRemoteTask() {

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

@@ -23,6 +23,7 @@ import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Iterator;
 
 import junit.framework.Assert;
@@ -46,6 +47,11 @@ import org.apache.hadoop.mapreduce.v2.app.job.event.TaskAttemptEventType;
 import org.apache.hadoop.mapreduce.v2.app.job.event.TaskEvent;
 import org.apache.hadoop.mapreduce.v2.app.job.event.TaskEventType;
 import org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl;
+import org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl;
+import org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncher;
+import org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherEvent;
+import org.apache.hadoop.mapreduce.v2.app.launcher.ContainerRemoteLaunchEvent;
+import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.NodeId;
 import org.apache.hadoop.yarn.api.records.NodeReport;
 import org.apache.hadoop.yarn.api.records.NodeState;
@@ -411,7 +417,40 @@ public class TestMRApp {
       TypeConverter.fromYarn(state);
     }
   }
-  
+
+  private Container containerObtainedByContainerLauncher;
+  @Test
+  public void testContainerPassThrough() throws Exception {
+    MRApp app = new MRApp(0, 1, true, this.getClass().getName(), true) {
+      @Override
+      protected ContainerLauncher createContainerLauncher(AppContext context) {
+        return new MockContainerLauncher() {
+          @Override
+          public void handle(ContainerLauncherEvent event) {
+            if (event instanceof ContainerRemoteLaunchEvent) {
+              containerObtainedByContainerLauncher =
+                  ((ContainerRemoteLaunchEvent) event).getAllocatedContainer();
+            }
+            super.handle(event);
+          }
+        };
+      };
+    };
+    Job job = app.submit(new Configuration());
+    app.waitForState(job, JobState.SUCCEEDED);
+    app.verifyCompleted();
+
+    Collection<Task> tasks = job.getTasks().values();
+    Collection<TaskAttempt> taskAttempts =
+        tasks.iterator().next().getAttempts().values();
+    TaskAttemptImpl taskAttempt =
+        (TaskAttemptImpl) taskAttempts.iterator().next();
+    // Container from RM should pass through to the launcher. Container object
+    // should be the same.
+   Assert.assertTrue(taskAttempt.container 
+     == containerObtainedByContainerLauncher);
+  }
+
   private final class MRAppWithHistory extends MRApp {
     public MRAppWithHistory(int maps, int reduces, boolean autoComplete,
         String testName, boolean cleanOnStart, int startCount) {

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

@@ -78,7 +78,8 @@ public class TestMapReduceChildJVM {
         public void handle(ContainerLauncherEvent event) {
           if (event.getType() == EventType.CONTAINER_REMOTE_LAUNCH) {
             ContainerRemoteLaunchEvent launchEvent = (ContainerRemoteLaunchEvent) event;
-            ContainerLaunchContext launchContext = launchEvent.getContainer();
+            ContainerLaunchContext launchContext =
+                launchEvent.getContainerLaunchContext();
             String cmdString = launchContext.getCommands().toString();
             LOG.info("launchContext " + cmdString);
             myCommandLine = cmdString;

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

@@ -37,7 +37,6 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.JobId;
 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;
@@ -224,10 +223,6 @@ public class TestContainerLauncher {
 
   @Test
   public void testSlowNM() throws Exception {
-    test();
-  }
-
-  private void test() throws Exception {
 
     conf = new Configuration();
     int maxAttempts = 1;
@@ -382,6 +377,15 @@ public class TestContainerLauncher {
     @Override
     public StartContainerResponse startContainer(StartContainerRequest request)
         throws YarnRemoteException {
+
+      // Validate that the container is what RM is giving.
+      Assert.assertEquals(MRApp.NM_HOST, request.getContainer().getNodeId()
+        .getHost());
+      Assert.assertEquals(MRApp.NM_PORT, request.getContainer().getNodeId()
+        .getPort());
+      Assert.assertEquals(MRApp.NM_HOST + ":" + MRApp.NM_HTTP_PORT, request
+        .getContainer().getNodeHttpAddress());
+
       StartContainerResponse response = recordFactory
           .newRecordInstance(StartContainerResponse.class);
       status = recordFactory.newRecordInstance(ContainerStatus.class);