Java Code Examples for org.apache.hadoop.yarn.api.protocolrecords.StartContainerRequest#newInstance()

private void startContainer(final YarnRPC rpc,
    org.apache.hadoop.yarn.api.records.Token nmToken,
    org.apache.hadoop.yarn.api.records.Token containerToken,
    NodeId nodeId, String user) throws Exception {

  ContainerLaunchContext context =
      Records.newRecord(ContainerLaunchContext.class);
  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(context,containerToken);
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  ContainerManagementProtocol proxy = null;
  try {
    proxy = getContainerManagementProtocolProxy(rpc, nmToken, nodeId, user);
    StartContainersResponse response = proxy.startContainers(allRequests);
    for(SerializedException ex : response.getFailedRequests().values()){
      parseAndThrowException(ex.deSerialize());
    }
  } finally {
    if (proxy != null) {
      rpc.stopProxy(proxy, conf);
    }
  }
}
 

private StartContainersResponse startContainer(Context context,
    final ContainerManagerImpl cm, ContainerId cid,
    ContainerLaunchContext clc, LogAggregationContext logAggregationContext)
        throws Exception {
  UserGroupInformation user = UserGroupInformation.createRemoteUser(
      cid.getApplicationAttemptId().toString());
  StartContainerRequest scReq = StartContainerRequest.newInstance(
      clc, TestContainerManager.createContainerToken(cid, 0,
          context.getNodeId(), user.getShortUserName(),
          context.getContainerTokenSecretManager(), logAggregationContext));
  final List<StartContainerRequest> scReqList =
      new ArrayList<StartContainerRequest>();
  scReqList.add(scReq);
  NMTokenIdentifier nmToken = new NMTokenIdentifier(
      cid.getApplicationAttemptId(), context.getNodeId(),
      user.getShortUserName(),
      context.getNMTokenSecretManager().getCurrentKey().getKeyId());
  user.addTokenIdentifier(nmToken);
  return user.doAs(new PrivilegedExceptionAction<StartContainersResponse>() {
    @Override
    public StartContainersResponse run() throws Exception {
      return cm.startContainers(
          StartContainersRequest.newInstance(scReqList));
    }
  });
}
 

private StartContainersResponse startContainer(Context context,
    final ContainerManagerImpl cm, ContainerId cid,
    ContainerLaunchContext clc, LogAggregationContext logAggregationContext)
        throws Exception {
  UserGroupInformation user = UserGroupInformation.createRemoteUser(
      cid.getApplicationAttemptId().toString());
  StartContainerRequest scReq = StartContainerRequest.newInstance(
      clc, TestContainerManager.createContainerToken(cid, 0,
          context.getNodeId(), user.getShortUserName(),
          context.getContainerTokenSecretManager(), logAggregationContext));
  final List<StartContainerRequest> scReqList =
      new ArrayList<StartContainerRequest>();
  scReqList.add(scReq);
  NMTokenIdentifier nmToken = new NMTokenIdentifier(
      cid.getApplicationAttemptId(), context.getNodeId(),
      user.getShortUserName(),
      context.getNMTokenSecretManager().getCurrentKey().getKeyId());
  user.addTokenIdentifier(nmToken);
  return user.doAs(new PrivilegedExceptionAction<StartContainersResponse>() {
    @Override
    public StartContainersResponse run() throws Exception {
      return cm.startContainers(
          StartContainersRequest.newInstance(scReqList));
    }
  });
}
 

private void startContainer(final YarnRPC rpc,
    org.apache.hadoop.yarn.api.records.Token nmToken,
    org.apache.hadoop.yarn.api.records.Token containerToken,
    NodeId nodeId, String user) throws Exception {

  ContainerLaunchContext context =
      Records.newRecord(ContainerLaunchContext.class);
  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(context,containerToken);
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  ContainerManagementProtocol proxy = null;
  try {
    proxy = getContainerManagementProtocolProxy(rpc, nmToken, nodeId, user);
    StartContainersResponse response = proxy.startContainers(allRequests);
    for(SerializedException ex : response.getFailedRequests().values()){
      parseAndThrowException(ex.deSerialize());
    }
  } finally {
    if (proxy != null) {
      rpc.stopProxy(proxy, conf);
    }
  }
}
 

private void launch() throws IOException, YarnException {
  connect();
  ContainerId masterContainerID = masterContainer.getId();
  ApplicationSubmissionContext applicationContext =
    application.getSubmissionContext();
  LOG.info("Setting up container " + masterContainer
      + " for AM " + application.getAppAttemptId());  
  ContainerLaunchContext launchContext =
      createAMContainerLaunchContext(applicationContext, masterContainerID);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(launchContext,
        masterContainer.getContainerToken());
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);

  StartContainersResponse response =
      containerMgrProxy.startContainers(allRequests);
  if (response.getFailedRequests() != null
      && response.getFailedRequests().containsKey(masterContainerID)) {
    Throwable t =
        response.getFailedRequests().get(masterContainerID).deSerialize();
    parseAndThrowException(t);
  } else {
    LOG.info("Done launching container " + masterContainer + " for AM "
        + application.getAppAttemptId());
  }
}
 

private synchronized void assign(Priority priority, NodeType type, 
    List<Container> containers) throws IOException, YarnException {
  for (Iterator<Container> i=containers.iterator(); i.hasNext();) {
    Container container = i.next();
    String host = container.getNodeId().toString();
    
    if (Resources.equals(requestSpec.get(priority), container.getResource())) { 
      // See which task can use this container
      for (Iterator<Task> t=tasks.get(priority).iterator(); t.hasNext();) {
        Task task = t.next();
        if (task.getState() == State.PENDING && task.canSchedule(type, host)) {
          NodeManager nodeManager = getNodeManager(host);
          
          task.start(nodeManager, container.getId());
          i.remove();
          
          // Track application resource usage
          Resources.addTo(used, container.getResource());
          
          LOG.info("Assigned container (" + container + ") of type " + type +
              " to task " + task.getTaskId() + " at priority " + priority + 
              " on node " + nodeManager.getHostName() +
              ", currently using " + used + " resources");

          // Update resource requests
          updateResourceRequests(requests.get(priority), type, task);

          // Launch the container
          StartContainerRequest scRequest =
              StartContainerRequest.newInstance(createCLC(),
                container.getContainerToken());
          List<StartContainerRequest> list =
              new ArrayList<StartContainerRequest>();
          list.add(scRequest);
          StartContainersRequest allRequests =
              StartContainersRequest.newInstance(list);
          nodeManager.startContainers(allRequests);
          break;
        }
      }
    }
  }
}
 

@Test
public void testMultipleContainersLaunch() throws Exception {
  containerManager.start();

  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  ContainerLaunchContext containerLaunchContext =
      recordFactory.newRecordInstance(ContainerLaunchContext.class);
  for (int i = 0; i < 10; i++) {
    ContainerId cId = createContainerId(i);
    long identifier = 0;
    if ((i & 1) == 0)
      // container with even id fail
      identifier = ResourceManagerConstants.RM_INVALID_IDENTIFIER;
    else
      identifier = DUMMY_RM_IDENTIFIER;
    Token containerToken =
        createContainerToken(cId, identifier, context.getNodeId(), user,
          context.getContainerTokenSecretManager());
    StartContainerRequest request =
        StartContainerRequest.newInstance(containerLaunchContext,
          containerToken);
    list.add(request);
  }
  StartContainersRequest requestList =
      StartContainersRequest.newInstance(list);

  StartContainersResponse response =
      containerManager.startContainers(requestList);

  Assert.assertEquals(5, response.getSuccessfullyStartedContainers().size());
  for (ContainerId id : response.getSuccessfullyStartedContainers()) {
    // Containers with odd id should succeed.
    Assert.assertEquals(1, id.getContainerId() & 1);
  }
  Assert.assertEquals(5, response.getFailedRequests().size());
  for (Map.Entry<ContainerId, SerializedException> entry : response
    .getFailedRequests().entrySet()) {
    // Containers with even id should fail.
    Assert.assertEquals(0, entry.getKey().getContainerId() & 1);
    Assert.assertTrue(entry.getValue().getMessage()
      .contains(
        "Container " + entry.getKey() + " rejected as it is allocated by a previous RM"));
  }
}
 

private void testContainerLaunchAndExit(int exitCode) throws IOException,
    InterruptedException, YarnException {

 File scriptFile = Shell.appendScriptExtension(tmpDir, "scriptFile");
 PrintWriter fileWriter = new PrintWriter(scriptFile);
 File processStartFile =
	  new File(tmpDir, "start_file.txt").getAbsoluteFile();

 // ////// Construct the Container-id
 ContainerId cId = createContainerId(0);

 if (Shell.WINDOWS) {
   fileWriter.println("@echo Hello World!> " + processStartFile);
   fileWriter.println("@echo " + cId + ">> " + processStartFile);
   if (exitCode != 0) {
     fileWriter.println("@exit " + exitCode);
   }
 } else {
   fileWriter.write("\numask 0"); // So that start file is readable by the test
   fileWriter.write("\necho Hello World! > " + processStartFile);
   fileWriter.write("\necho $$ >> " + processStartFile); 
   // Have script throw an exit code at the end
   if (exitCode != 0) {
     fileWriter.write("\nexit "+exitCode);
   }
 }
 
 fileWriter.close();

 ContainerLaunchContext containerLaunchContext = 
	  recordFactory.newRecordInstance(ContainerLaunchContext.class);

 URL resource_alpha =
	  ConverterUtils.getYarnUrlFromPath(localFS
			  .makeQualified(new Path(scriptFile.getAbsolutePath())));
 LocalResource rsrc_alpha =
	  recordFactory.newRecordInstance(LocalResource.class);
 rsrc_alpha.setResource(resource_alpha);
 rsrc_alpha.setSize(-1);
 rsrc_alpha.setVisibility(LocalResourceVisibility.APPLICATION);
 rsrc_alpha.setType(LocalResourceType.FILE);
 rsrc_alpha.setTimestamp(scriptFile.lastModified());
 String destinationFile = "dest_file";
 Map<String, LocalResource> localResources = 
	  new HashMap<String, LocalResource>();
 localResources.put(destinationFile, rsrc_alpha);
 containerLaunchContext.setLocalResources(localResources);
 List<String> commands = Arrays.asList(Shell.getRunScriptCommand(scriptFile));
 containerLaunchContext.setCommands(commands);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(
        containerLaunchContext,
        createContainerToken(cId, DUMMY_RM_IDENTIFIER, context.getNodeId(),
          user, context.getContainerTokenSecretManager()));
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  containerManager.startContainers(allRequests);

 BaseContainerManagerTest.waitForContainerState(containerManager, cId,
	  ContainerState.COMPLETE);

  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(cId);
  GetContainerStatusesRequest gcsRequest =
      GetContainerStatusesRequest.newInstance(containerIds);
 ContainerStatus containerStatus = 
	  containerManager.getContainerStatuses(gcsRequest).getContainerStatuses().get(0);

 // Verify exit status matches exit state of script
 Assert.assertEquals(exitCode,
	  containerStatus.getExitStatus());	    
}
 

@Test
public void testLogAggregationForRealContainerLaunch() throws IOException,
    InterruptedException, YarnException {

  this.containerManager.start();


  File scriptFile = new File(tmpDir, "scriptFile.sh");
  PrintWriter fileWriter = new PrintWriter(scriptFile);
  fileWriter.write("\necho Hello World! Stdout! > "
      + new File(localLogDir, "stdout"));
  fileWriter.write("\necho Hello World! Stderr! > "
      + new File(localLogDir, "stderr"));
  fileWriter.write("\necho Hello World! Syslog! > "
      + new File(localLogDir, "syslog"));
  fileWriter.close();

  ContainerLaunchContext containerLaunchContext =
      recordFactory.newRecordInstance(ContainerLaunchContext.class);
  // ////// Construct the Container-id
  ApplicationId appId = ApplicationId.newInstance(0, 0);
  ApplicationAttemptId appAttemptId =
      BuilderUtils.newApplicationAttemptId(appId, 1);
  ContainerId cId = BuilderUtils.newContainerId(appAttemptId, 0);

  URL resource_alpha =
      ConverterUtils.getYarnUrlFromPath(localFS
          .makeQualified(new Path(scriptFile.getAbsolutePath())));
  LocalResource rsrc_alpha =
      recordFactory.newRecordInstance(LocalResource.class);
  rsrc_alpha.setResource(resource_alpha);
  rsrc_alpha.setSize(-1);
  rsrc_alpha.setVisibility(LocalResourceVisibility.APPLICATION);
  rsrc_alpha.setType(LocalResourceType.FILE);
  rsrc_alpha.setTimestamp(scriptFile.lastModified());
  String destinationFile = "dest_file";
  Map<String, LocalResource> localResources = 
      new HashMap<String, LocalResource>();
  localResources.put(destinationFile, rsrc_alpha);
  containerLaunchContext.setLocalResources(localResources);
  List<String> commands = new ArrayList<String>();
  commands.add("/bin/bash");
  commands.add(scriptFile.getAbsolutePath());
  containerLaunchContext.setCommands(commands);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(containerLaunchContext,
        TestContainerManager.createContainerToken(
          cId, DUMMY_RM_IDENTIFIER, context.getNodeId(), user,
          context.getContainerTokenSecretManager()));
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  this.containerManager.startContainers(allRequests);
  
  BaseContainerManagerTest.waitForContainerState(this.containerManager,
      cId, ContainerState.COMPLETE);

  this.containerManager.handle(new CMgrCompletedAppsEvent(Arrays
      .asList(appId), CMgrCompletedAppsEvent.Reason.ON_SHUTDOWN));
  this.containerManager.stop();
}
 

private void testRPCTimeout(String rpcClass) throws Exception {
  Configuration conf = new Configuration();
  // set timeout low for the test
  conf.setInt("yarn.rpc.nm-command-timeout", 3000);

  conf.set(YarnConfiguration.IPC_RPC_IMPL, rpcClass);
  YarnRPC rpc = YarnRPC.create(conf);
  String bindAddr = "localhost:0";
  InetSocketAddress addr = NetUtils.createSocketAddr(bindAddr);
  Server server = rpc.getServer(ContainerManagementProtocol.class,
      new DummyContainerManager(), addr, conf, null, 1);
  server.start();
  try {

    ContainerManagementProtocol proxy = (ContainerManagementProtocol) rpc.getProxy(
        ContainerManagementProtocol.class,
        server.getListenerAddress(), conf);
    ContainerLaunchContext containerLaunchContext = recordFactory
        .newRecordInstance(ContainerLaunchContext.class);

    ApplicationId applicationId = ApplicationId.newInstance(0, 0);
    ApplicationAttemptId applicationAttemptId =
        ApplicationAttemptId.newInstance(applicationId, 0);
    ContainerId containerId =
        ContainerId.newContainerId(applicationAttemptId, 100);
    NodeId nodeId = NodeId.newInstance("localhost", 1234);
    Resource resource = Resource.newInstance(1234, 2);
    ContainerTokenIdentifier containerTokenIdentifier =
        new ContainerTokenIdentifier(containerId, "localhost", "user",
          resource, System.currentTimeMillis() + 10000, 42, 42,
          Priority.newInstance(0), 0);
    Token containerToken =
        TestRPC.newContainerToken(nodeId, "password".getBytes(),
          containerTokenIdentifier);

    StartContainerRequest scRequest =
        StartContainerRequest.newInstance(containerLaunchContext,
          containerToken);
    List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
    list.add(scRequest);
    StartContainersRequest allRequests =
        StartContainersRequest.newInstance(list);
    try {
      proxy.startContainers(allRequests);
    } catch (Exception e) {
      LOG.info(StringUtils.stringifyException(e));
      Assert.assertEquals("Error, exception is not: "
          + SocketTimeoutException.class.getName(),
          SocketTimeoutException.class.getName(), e.getClass().getName());
      return;
    }
  } finally {
    server.stop();
  }

  Assert.fail("timeout exception should have occurred!");
}
 

private void test(String rpcClass) throws Exception {
  Configuration conf = new Configuration();
  conf.set(YarnConfiguration.IPC_RPC_IMPL, rpcClass);
  YarnRPC rpc = YarnRPC.create(conf);
  String bindAddr = "localhost:0";
  InetSocketAddress addr = NetUtils.createSocketAddr(bindAddr);
  Server server = rpc.getServer(ContainerManagementProtocol.class, 
          new DummyContainerManager(), addr, conf, null, 1);
  server.start();
  RPC.setProtocolEngine(conf, ContainerManagementProtocolPB.class, ProtobufRpcEngine.class);
  ContainerManagementProtocol proxy = (ContainerManagementProtocol) 
      rpc.getProxy(ContainerManagementProtocol.class, 
          NetUtils.getConnectAddress(server), conf);
  ContainerLaunchContext containerLaunchContext = 
      recordFactory.newRecordInstance(ContainerLaunchContext.class);

  ApplicationId applicationId = ApplicationId.newInstance(0, 0);
  ApplicationAttemptId applicationAttemptId =
      ApplicationAttemptId.newInstance(applicationId, 0);
  ContainerId containerId =
      ContainerId.newContainerId(applicationAttemptId, 100);
  NodeId nodeId = NodeId.newInstance("localhost", 1234);
  Resource resource = Resource.newInstance(1234, 2);
  ContainerTokenIdentifier containerTokenIdentifier =
      new ContainerTokenIdentifier(containerId, "localhost", "user",
        resource, System.currentTimeMillis() + 10000, 42, 42,
        Priority.newInstance(0), 0);
  Token containerToken = newContainerToken(nodeId, "password".getBytes(),
        containerTokenIdentifier);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(containerLaunchContext,
        containerToken);
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  proxy.startContainers(allRequests);

  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  GetContainerStatusesRequest gcsRequest =
      GetContainerStatusesRequest.newInstance(containerIds);
  GetContainerStatusesResponse response =
      proxy.getContainerStatuses(gcsRequest);
  List<ContainerStatus> statuses = response.getContainerStatuses();

  //test remote exception
  boolean exception = false;
  try {
    StopContainersRequest stopRequest =
        recordFactory.newRecordInstance(StopContainersRequest.class);
    stopRequest.setContainerIds(containerIds);
    proxy.stopContainers(stopRequest);
    } catch (YarnException e) {
    exception = true;
    Assert.assertTrue(e.getMessage().contains(EXCEPTION_MSG));
    Assert.assertTrue(e.getMessage().contains(EXCEPTION_CAUSE));
    System.out.println("Test Exception is " + e.getMessage());
  } catch (Exception ex) {
    ex.printStackTrace();
  }
  Assert.assertTrue(exception);
  
  server.stop();
  Assert.assertNotNull(statuses.get(0));
  Assert.assertEquals(ContainerState.RUNNING, statuses.get(0).getState());
}
 

@SuppressWarnings("unchecked")
public synchronized void launch(ContainerRemoteLaunchEvent event) {
  LOG.info("Launching " + taskAttemptID);
  if(this.state == ContainerState.KILLED_BEFORE_LAUNCH) {
    state = ContainerState.DONE;
    sendContainerLaunchFailedMsg(taskAttemptID, 
        "Container was killed before it was launched");
    return;
  }
  
  ContainerManagementProtocolProxyData proxy = null;
  try {

    proxy = getCMProxy(containerMgrAddress, containerID);

    // Construct the actual Container
    ContainerLaunchContext containerLaunchContext =
      event.getContainerLaunchContext();

    // Now launch the actual container
    StartContainerRequest startRequest =
        StartContainerRequest.newInstance(containerLaunchContext,
          event.getContainerToken());
    List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
    list.add(startRequest);
    StartContainersRequest requestList = StartContainersRequest.newInstance(list);
    StartContainersResponse response =
        proxy.getContainerManagementProtocol().startContainers(requestList);
    if (response.getFailedRequests() != null
        && response.getFailedRequests().containsKey(containerID)) {
      throw response.getFailedRequests().get(containerID).deSerialize();
    }
    ByteBuffer portInfo =
        response.getAllServicesMetaData().get(
            ShuffleHandler.MAPREDUCE_SHUFFLE_SERVICEID);
    int port = -1;
    if(portInfo != null) {
      port = ShuffleHandler.deserializeMetaData(portInfo);
    }
    LOG.info("Shuffle port returned by ContainerManager for "
        + taskAttemptID + " : " + port);

    if(port < 0) {
      this.state = ContainerState.FAILED;
      throw new IllegalStateException("Invalid shuffle port number "
          + port + " returned for " + taskAttemptID);
    }

    // after launching, send launched event to task attempt to move
    // it from ASSIGNED to RUNNING state
    context.getEventHandler().handle(
        new TaskAttemptContainerLaunchedEvent(taskAttemptID, port));
    this.state = ContainerState.RUNNING;
  } catch (Throwable t) {
    String message = "Container launch failed for " + containerID + " : "
        + StringUtils.stringifyException(t);
    this.state = ContainerState.FAILED;
    sendContainerLaunchFailedMsg(taskAttemptID, message);
  } finally {
    if (proxy != null) {
      cmProxy.mayBeCloseProxy(proxy);
    }
  }
}
 

private void test(String rpcClass) throws Exception {
  Configuration conf = new Configuration();
  conf.set(YarnConfiguration.IPC_RPC_IMPL, rpcClass);
  YarnRPC rpc = YarnRPC.create(conf);
  String bindAddr = "localhost:0";
  InetSocketAddress addr = NetUtils.createSocketAddr(bindAddr);
  Server server = rpc.getServer(ContainerManagementProtocol.class, 
          new DummyContainerManager(), addr, conf, null, 1);
  server.start();
  RPC.setProtocolEngine(conf, ContainerManagementProtocolPB.class, ProtobufRpcEngine.class);
  ContainerManagementProtocol proxy = (ContainerManagementProtocol) 
      rpc.getProxy(ContainerManagementProtocol.class, 
          NetUtils.getConnectAddress(server), conf);
  ContainerLaunchContext containerLaunchContext = 
      recordFactory.newRecordInstance(ContainerLaunchContext.class);

  ApplicationId applicationId = ApplicationId.newInstance(0, 0);
  ApplicationAttemptId applicationAttemptId =
      ApplicationAttemptId.newInstance(applicationId, 0);
  ContainerId containerId =
      ContainerId.newContainerId(applicationAttemptId, 100);
  NodeId nodeId = NodeId.newInstance("localhost", 1234);
  Resource resource = Resource.newInstance(1234, 2);
  ContainerTokenIdentifier containerTokenIdentifier =
      new ContainerTokenIdentifier(containerId, "localhost", "user",
        resource, System.currentTimeMillis() + 10000, 42, 42,
        Priority.newInstance(0), 0);
  Token containerToken = newContainerToken(nodeId, "password".getBytes(),
        containerTokenIdentifier);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(containerLaunchContext,
        containerToken);
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  proxy.startContainers(allRequests);

  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  GetContainerStatusesRequest gcsRequest =
      GetContainerStatusesRequest.newInstance(containerIds);
  GetContainerStatusesResponse response =
      proxy.getContainerStatuses(gcsRequest);
  List<ContainerStatus> statuses = response.getContainerStatuses();

  //test remote exception
  boolean exception = false;
  try {
    StopContainersRequest stopRequest =
        recordFactory.newRecordInstance(StopContainersRequest.class);
    stopRequest.setContainerIds(containerIds);
    proxy.stopContainers(stopRequest);
    } catch (YarnException e) {
    exception = true;
    Assert.assertTrue(e.getMessage().contains(EXCEPTION_MSG));
    Assert.assertTrue(e.getMessage().contains(EXCEPTION_CAUSE));
    System.out.println("Test Exception is " + e.getMessage());
  } catch (Exception ex) {
    ex.printStackTrace();
  }
  Assert.assertTrue(exception);
  
  server.stop();
  Assert.assertNotNull(statuses.get(0));
  Assert.assertEquals(ContainerState.RUNNING, statuses.get(0).getState());
}
 

@Test
public void testStartContainerFailureWithUnknownAuxService() throws Exception {
  conf.setStrings(YarnConfiguration.NM_AUX_SERVICES,
      new String[] { "existService" });
  conf.setClass(
      String.format(YarnConfiguration.NM_AUX_SERVICE_FMT, "existService"),
      ServiceA.class, Service.class);
  containerManager.start();

  List<StartContainerRequest> startRequest =
      new ArrayList<StartContainerRequest>();

  ContainerLaunchContext containerLaunchContext =
      recordFactory.newRecordInstance(ContainerLaunchContext.class);
  Map<String, ByteBuffer> serviceData = new HashMap<String, ByteBuffer>();
  String serviceName = "non_exist_auxService";
  serviceData.put(serviceName, ByteBuffer.wrap(serviceName.getBytes()));
  containerLaunchContext.setServiceData(serviceData);

  ContainerId cId = createContainerId(0);
  String user = "start_container_fail";
  Token containerToken =
      createContainerToken(cId, DUMMY_RM_IDENTIFIER, context.getNodeId(),
          user, context.getContainerTokenSecretManager());
  StartContainerRequest request =
      StartContainerRequest.newInstance(containerLaunchContext,
          containerToken);

  // start containers
  startRequest.add(request);
  StartContainersRequest requestList =
      StartContainersRequest.newInstance(startRequest);

  StartContainersResponse response =
      containerManager.startContainers(requestList);
  Assert.assertTrue(response.getFailedRequests().size() == 1);
  Assert.assertTrue(response.getSuccessfullyStartedContainers().size() == 0);
  Assert.assertTrue(response.getFailedRequests().containsKey(cId));
  Assert.assertTrue(response.getFailedRequests().get(cId).getMessage()
      .contains("The auxService:" + serviceName + " does not exist"));
}
 

private synchronized void assign(Priority priority, NodeType type, 
    List<Container> containers) throws IOException, YarnException {
  for (Iterator<Container> i=containers.iterator(); i.hasNext();) {
    Container container = i.next();
    String host = container.getNodeId().toString();
    
    if (Resources.equals(requestSpec.get(priority), container.getResource())) { 
      // See which task can use this container
      for (Iterator<Task> t=tasks.get(priority).iterator(); t.hasNext();) {
        Task task = t.next();
        if (task.getState() == State.PENDING && task.canSchedule(type, host)) {
          NodeManager nodeManager = getNodeManager(host);
          
          task.start(nodeManager, container.getId());
          i.remove();
          
          // Track application resource usage
          Resources.addTo(used, container.getResource());
          
          LOG.info("Assigned container (" + container + ") of type " + type +
              " to task " + task.getTaskId() + " at priority " + priority + 
              " on node " + nodeManager.getHostName() +
              ", currently using " + used + " resources");

          // Update resource requests
          updateResourceRequests(requests.get(priority), type, task);

          // Launch the container
          StartContainerRequest scRequest =
              StartContainerRequest.newInstance(createCLC(),
                container.getContainerToken());
          List<StartContainerRequest> list =
              new ArrayList<StartContainerRequest>();
          list.add(scRequest);
          StartContainersRequest allRequests =
              StartContainersRequest.newInstance(list);
          nodeManager.startContainers(allRequests);
          break;
        }
      }
    }
  }
}
 

@Test
public void testMultipleContainersLaunch() throws Exception {
  containerManager.start();

  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  ContainerLaunchContext containerLaunchContext =
      recordFactory.newRecordInstance(ContainerLaunchContext.class);
  for (int i = 0; i < 10; i++) {
    ContainerId cId = createContainerId(i);
    long identifier = 0;
    if ((i & 1) == 0)
      // container with even id fail
      identifier = ResourceManagerConstants.RM_INVALID_IDENTIFIER;
    else
      identifier = DUMMY_RM_IDENTIFIER;
    Token containerToken =
        createContainerToken(cId, identifier, context.getNodeId(), user,
          context.getContainerTokenSecretManager());
    StartContainerRequest request =
        StartContainerRequest.newInstance(containerLaunchContext,
          containerToken);
    list.add(request);
  }
  StartContainersRequest requestList =
      StartContainersRequest.newInstance(list);

  StartContainersResponse response =
      containerManager.startContainers(requestList);

  Assert.assertEquals(5, response.getSuccessfullyStartedContainers().size());
  for (ContainerId id : response.getSuccessfullyStartedContainers()) {
    // Containers with odd id should succeed.
    Assert.assertEquals(1, id.getContainerId() & 1);
  }
  Assert.assertEquals(5, response.getFailedRequests().size());
  for (Map.Entry<ContainerId, SerializedException> entry : response
    .getFailedRequests().entrySet()) {
    // Containers with even id should fail.
    Assert.assertEquals(0, entry.getKey().getContainerId() & 1);
    Assert.assertTrue(entry.getValue().getMessage()
      .contains(
        "Container " + entry.getKey() + " rejected as it is allocated by a previous RM"));
  }
}
 

private void testContainerLaunchAndExit(int exitCode) throws IOException,
    InterruptedException, YarnException {

 File scriptFile = Shell.appendScriptExtension(tmpDir, "scriptFile");
 PrintWriter fileWriter = new PrintWriter(scriptFile);
 File processStartFile =
	  new File(tmpDir, "start_file.txt").getAbsoluteFile();

 // ////// Construct the Container-id
 ContainerId cId = createContainerId(0);

 if (Shell.WINDOWS) {
   fileWriter.println("@echo Hello World!> " + processStartFile);
   fileWriter.println("@echo " + cId + ">> " + processStartFile);
   if (exitCode != 0) {
     fileWriter.println("@exit " + exitCode);
   }
 } else {
   fileWriter.write("\numask 0"); // So that start file is readable by the test
   fileWriter.write("\necho Hello World! > " + processStartFile);
   fileWriter.write("\necho $$ >> " + processStartFile); 
   // Have script throw an exit code at the end
   if (exitCode != 0) {
     fileWriter.write("\nexit "+exitCode);
   }
 }
 
 fileWriter.close();

 ContainerLaunchContext containerLaunchContext = 
	  recordFactory.newRecordInstance(ContainerLaunchContext.class);

 URL resource_alpha =
	  ConverterUtils.getYarnUrlFromPath(localFS
			  .makeQualified(new Path(scriptFile.getAbsolutePath())));
 LocalResource rsrc_alpha =
	  recordFactory.newRecordInstance(LocalResource.class);
 rsrc_alpha.setResource(resource_alpha);
 rsrc_alpha.setSize(-1);
 rsrc_alpha.setVisibility(LocalResourceVisibility.APPLICATION);
 rsrc_alpha.setType(LocalResourceType.FILE);
 rsrc_alpha.setTimestamp(scriptFile.lastModified());
 String destinationFile = "dest_file";
 Map<String, LocalResource> localResources = 
	  new HashMap<String, LocalResource>();
 localResources.put(destinationFile, rsrc_alpha);
 containerLaunchContext.setLocalResources(localResources);
 List<String> commands = Arrays.asList(Shell.getRunScriptCommand(scriptFile));
 containerLaunchContext.setCommands(commands);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(
        containerLaunchContext,
        createContainerToken(cId, DUMMY_RM_IDENTIFIER, context.getNodeId(),
          user, context.getContainerTokenSecretManager()));
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  containerManager.startContainers(allRequests);

 BaseContainerManagerTest.waitForContainerState(containerManager, cId,
	  ContainerState.COMPLETE);

  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(cId);
  GetContainerStatusesRequest gcsRequest =
      GetContainerStatusesRequest.newInstance(containerIds);
 ContainerStatus containerStatus = 
	  containerManager.getContainerStatuses(gcsRequest).getContainerStatuses().get(0);

 // Verify exit status matches exit state of script
 Assert.assertEquals(exitCode,
	  containerStatus.getExitStatus());	    
}
 

@Test
public void testContainerSetup() throws Exception {

  containerManager.start();

  // ////// Create the resources for the container
  File dir = new File(tmpDir, "dir");
  dir.mkdirs();
  File file = new File(dir, "file");
  PrintWriter fileWriter = new PrintWriter(file);
  fileWriter.write("Hello World!");
  fileWriter.close();

  // ////// Construct the Container-id
  ContainerId cId = createContainerId(0);

  // ////// Construct the container-spec.
  ContainerLaunchContext containerLaunchContext = 
      recordFactory.newRecordInstance(ContainerLaunchContext.class);
  URL resource_alpha =
      ConverterUtils.getYarnUrlFromPath(localFS
          .makeQualified(new Path(file.getAbsolutePath())));
  LocalResource rsrc_alpha = recordFactory.newRecordInstance(LocalResource.class);    
  rsrc_alpha.setResource(resource_alpha);
  rsrc_alpha.setSize(-1);
  rsrc_alpha.setVisibility(LocalResourceVisibility.APPLICATION);
  rsrc_alpha.setType(LocalResourceType.FILE);
  rsrc_alpha.setTimestamp(file.lastModified());
  String destinationFile = "dest_file";
  Map<String, LocalResource> localResources = 
      new HashMap<String, LocalResource>();
  localResources.put(destinationFile, rsrc_alpha);
  containerLaunchContext.setLocalResources(localResources);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(
        containerLaunchContext,
        createContainerToken(cId, DUMMY_RM_IDENTIFIER, context.getNodeId(),
          user, context.getContainerTokenSecretManager()));
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  containerManager.startContainers(allRequests);

  BaseContainerManagerTest.waitForContainerState(containerManager, cId,
      ContainerState.COMPLETE);

  // Now ascertain that the resources are localised correctly.
  ApplicationId appId = cId.getApplicationAttemptId().getApplicationId();
  String appIDStr = ConverterUtils.toString(appId);
  String containerIDStr = ConverterUtils.toString(cId);
  File userCacheDir = new File(localDir, ContainerLocalizer.USERCACHE);
  File userDir = new File(userCacheDir, user);
  File appCache = new File(userDir, ContainerLocalizer.APPCACHE);
  File appDir = new File(appCache, appIDStr);
  File containerDir = new File(appDir, containerIDStr);
  File targetFile = new File(containerDir, destinationFile);
  File sysDir =
      new File(localDir,
          ResourceLocalizationService.NM_PRIVATE_DIR);
  File appSysDir = new File(sysDir, appIDStr);
  File containerSysDir = new File(appSysDir, containerIDStr);

  for (File f : new File[] { localDir, sysDir, userCacheDir, appDir,
      appSysDir,
      containerDir, containerSysDir }) {
    Assert.assertTrue(f.getAbsolutePath() + " doesn't exist!!", f.exists());
    Assert.assertTrue(f.getAbsolutePath() + " is not a directory!!",
        f.isDirectory());
  }
  Assert.assertTrue(targetFile.getAbsolutePath() + " doesn't exist!!",
      targetFile.exists());

  // Now verify the contents of the file
  BufferedReader reader = new BufferedReader(new FileReader(targetFile));
  Assert.assertEquals("Hello World!", reader.readLine());
  Assert.assertEquals(null, reader.readLine());
}
 

@Test
public void testLogAggregationForRealContainerLaunch() throws IOException,
    InterruptedException, YarnException {

  this.containerManager.start();


  File scriptFile = new File(tmpDir, "scriptFile.sh");
  PrintWriter fileWriter = new PrintWriter(scriptFile);
  fileWriter.write("\necho Hello World! Stdout! > "
      + new File(localLogDir, "stdout"));
  fileWriter.write("\necho Hello World! Stderr! > "
      + new File(localLogDir, "stderr"));
  fileWriter.write("\necho Hello World! Syslog! > "
      + new File(localLogDir, "syslog"));
  fileWriter.close();

  ContainerLaunchContext containerLaunchContext =
      recordFactory.newRecordInstance(ContainerLaunchContext.class);
  // ////// Construct the Container-id
  ApplicationId appId = ApplicationId.newInstance(0, 0);
  ApplicationAttemptId appAttemptId =
      BuilderUtils.newApplicationAttemptId(appId, 1);
  ContainerId cId = BuilderUtils.newContainerId(appAttemptId, 0);

  URL resource_alpha =
      ConverterUtils.getYarnUrlFromPath(localFS
          .makeQualified(new Path(scriptFile.getAbsolutePath())));
  LocalResource rsrc_alpha =
      recordFactory.newRecordInstance(LocalResource.class);
  rsrc_alpha.setResource(resource_alpha);
  rsrc_alpha.setSize(-1);
  rsrc_alpha.setVisibility(LocalResourceVisibility.APPLICATION);
  rsrc_alpha.setType(LocalResourceType.FILE);
  rsrc_alpha.setTimestamp(scriptFile.lastModified());
  String destinationFile = "dest_file";
  Map<String, LocalResource> localResources = 
      new HashMap<String, LocalResource>();
  localResources.put(destinationFile, rsrc_alpha);
  containerLaunchContext.setLocalResources(localResources);
  List<String> commands = new ArrayList<String>();
  commands.add("/bin/bash");
  commands.add(scriptFile.getAbsolutePath());
  containerLaunchContext.setCommands(commands);

  StartContainerRequest scRequest =
      StartContainerRequest.newInstance(containerLaunchContext,
        TestContainerManager.createContainerToken(
          cId, DUMMY_RM_IDENTIFIER, context.getNodeId(), user,
          context.getContainerTokenSecretManager()));
  List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
  list.add(scRequest);
  StartContainersRequest allRequests =
      StartContainersRequest.newInstance(list);
  this.containerManager.startContainers(allRequests);
  
  BaseContainerManagerTest.waitForContainerState(this.containerManager,
      cId, ContainerState.COMPLETE);

  this.containerManager.handle(new CMgrCompletedAppsEvent(Arrays
      .asList(appId), CMgrCompletedAppsEvent.Reason.ON_SHUTDOWN));
  this.containerManager.stop();
}
 

@SuppressWarnings("unchecked")
public synchronized void launch(ContainerRemoteLaunchEvent event) {
  LOG.info("Launching " + taskAttemptID);
  if(this.state == ContainerState.KILLED_BEFORE_LAUNCH) {
    state = ContainerState.DONE;
    sendContainerLaunchFailedMsg(taskAttemptID, 
        "Container was killed before it was launched");
    return;
  }
  
  ContainerManagementProtocolProxyData proxy = null;
  try {

    proxy = getCMProxy(containerMgrAddress, containerID);

    // Construct the actual Container
    ContainerLaunchContext containerLaunchContext =
      event.getContainerLaunchContext();

    // Now launch the actual container
    StartContainerRequest startRequest =
        StartContainerRequest.newInstance(containerLaunchContext,
          event.getContainerToken());
    List<StartContainerRequest> list = new ArrayList<StartContainerRequest>();
    list.add(startRequest);
    StartContainersRequest requestList = StartContainersRequest.newInstance(list);
    StartContainersResponse response =
        proxy.getContainerManagementProtocol().startContainers(requestList);
    if (response.getFailedRequests() != null
        && response.getFailedRequests().containsKey(containerID)) {
      throw response.getFailedRequests().get(containerID).deSerialize();
    }
    ByteBuffer portInfo =
        response.getAllServicesMetaData().get(
            ShuffleHandler.MAPREDUCE_SHUFFLE_SERVICEID);
    int port = -1;
    if(portInfo != null) {
      port = ShuffleHandler.deserializeMetaData(portInfo);
    }
    LOG.info("Shuffle port returned by ContainerManager for "
        + taskAttemptID + " : " + port);

    if(port < 0) {
      this.state = ContainerState.FAILED;
      throw new IllegalStateException("Invalid shuffle port number "
          + port + " returned for " + taskAttemptID);
    }

    // after launching, send launched event to task attempt to move
    // it from ASSIGNED to RUNNING state
    context.getEventHandler().handle(
        new TaskAttemptContainerLaunchedEvent(taskAttemptID, port));
    this.state = ContainerState.RUNNING;
  } catch (Throwable t) {
    String message = "Container launch failed for " + containerID + " : "
        + StringUtils.stringifyException(t);
    this.state = ContainerState.FAILED;
    sendContainerLaunchFailedMsg(taskAttemptID, message);
  } finally {
    if (proxy != null) {
      cmProxy.mayBeCloseProxy(proxy);
    }
  }
}