org.apache.hadoop.yarn.api.protocolrecords.StopContainersRequest Java Examples

public synchronized void finishTask(Task task) throws IOException,
    YarnException {
  Set<Task> tasks = this.tasks.get(task.getPriority());
  if (!tasks.remove(task)) {
    throw new IllegalStateException(
        "Finishing unknown task " + task.getTaskId() + 
        " from application " + applicationId);
  }
  
  NodeManager nodeManager = task.getNodeManager();
  ContainerId containerId = task.getContainerId();
  task.stop();
  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  StopContainersRequest stopRequest =
      StopContainersRequest.newInstance(containerIds);
  nodeManager.stopContainers(stopRequest);
  
  Resources.subtractFrom(used, requestSpec.get(task.getPriority()));
  
  LOG.info("Finished task " + task.getTaskId() + 
      " of application " + applicationId + 
      " on node " + nodeManager.getHostName() + 
      ", currently using " + used + " resources");
}
 

private void stopContainer(YarnRPC rpc, Token nmToken,
    List<ContainerId> containerId, ApplicationAttemptId appAttemptId,
    NodeId nodeId) throws Exception {
  StopContainersRequest request =
      StopContainersRequest.newInstance(containerId);
  ContainerManagementProtocol proxy = null;
  try {
    proxy =
        getContainerManagementProtocolProxy(rpc, nmToken, nodeId,
            appAttemptId.toString());
    StopContainersResponse response = proxy.stopContainers(request);
    if (response.getFailedRequests() != null &&
        response.getFailedRequests().containsKey(containerId)) {
      parseAndThrowException(response.getFailedRequests().get(containerId)
          .deSerialize());
    }
  } catch (Exception e) {
    if (proxy != null) {
      rpc.stopProxy(proxy, conf);
    }
  }
}
 

/**
 * Stop a list of containers running on this NodeManager.
 */
@Override
public StopContainersResponse stopContainers(StopContainersRequest requests)
    throws YarnException, IOException {

  List<ContainerId> succeededRequests = new ArrayList<ContainerId>();
  Map<ContainerId, SerializedException> failedRequests =
      new HashMap<ContainerId, SerializedException>();
  UserGroupInformation remoteUgi = getRemoteUgi();
  NMTokenIdentifier identifier = selectNMTokenIdentifier(remoteUgi);
  for (ContainerId id : requests.getContainerIds()) {
    try {
      stopContainerInternal(identifier, id);
      succeededRequests.add(id);
    } catch (YarnException e) {
      failedRequests.put(id, SerializedException.newInstance(e));
    }
  }
  return StopContainersResponse
    .newInstance(succeededRequests, failedRequests);
}
 

/**
 * Stop a list of containers running on this NodeManager.
 */
@Override
public StopContainersResponse stopContainers(StopContainersRequest requests)
    throws YarnException, IOException {

  List<ContainerId> succeededRequests = new ArrayList<ContainerId>();
  Map<ContainerId, SerializedException> failedRequests =
      new HashMap<ContainerId, SerializedException>();
  UserGroupInformation remoteUgi = getRemoteUgi();
  NMTokenIdentifier identifier = selectNMTokenIdentifier(remoteUgi);
  for (ContainerId id : requests.getContainerIds()) {
    try {
      stopContainerInternal(identifier, id);
      succeededRequests.add(id);
    } catch (YarnException e) {
      failedRequests.put(id, SerializedException.newInstance(e));
    }
  }
  return StopContainersResponse
    .newInstance(succeededRequests, failedRequests);
}
 

private void stopContainer(YarnRPC rpc, Token nmToken,
    List<ContainerId> containerId, ApplicationAttemptId appAttemptId,
    NodeId nodeId) throws Exception {
  StopContainersRequest request =
      StopContainersRequest.newInstance(containerId);
  ContainerManagementProtocol proxy = null;
  try {
    proxy =
        getContainerManagementProtocolProxy(rpc, nmToken, nodeId,
            appAttemptId.toString());
    StopContainersResponse response = proxy.stopContainers(request);
    if (response.getFailedRequests() != null &&
        response.getFailedRequests().containsKey(containerId)) {
      parseAndThrowException(response.getFailedRequests().get(containerId)
          .deSerialize());
    }
  } catch (Exception e) {
    if (proxy != null) {
      rpc.stopProxy(proxy, conf);
    }
  }
}
 

public synchronized void finishTask(Task task) throws IOException,
    YarnException {
  Set<Task> tasks = this.tasks.get(task.getPriority());
  if (!tasks.remove(task)) {
    throw new IllegalStateException(
        "Finishing unknown task " + task.getTaskId() + 
        " from application " + applicationId);
  }
  
  NodeManager nodeManager = task.getNodeManager();
  ContainerId containerId = task.getContainerId();
  task.stop();
  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  StopContainersRequest stopRequest =
      StopContainersRequest.newInstance(containerIds);
  nodeManager.stopContainers(stopRequest);
  
  Resources.subtractFrom(used, requestSpec.get(task.getPriority()));
  
  LOG.info("Finished task " + task.getTaskId() + 
      " of application " + applicationId + 
      " on node " + nodeManager.getHostName() + 
      ", currently using " + used + " resources");
}
 

private void stopContainerInternal(ContainerId containerId, NodeId nodeId)
    throws IOException, YarnException {
  ContainerManagementProtocolProxyData proxy = null;
  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  try {
    proxy = cmProxy.getProxy(nodeId.toString(), containerId);
    StopContainersResponse response =
        proxy.getContainerManagementProtocol().stopContainers(
          StopContainersRequest.newInstance(containerIds));
    if (response.getFailedRequests() != null
        && response.getFailedRequests().containsKey(containerId)) {
      Throwable t = response.getFailedRequests().get(containerId)
        .deSerialize();
      parseAndThrowException(t);
    }
  } finally {
    if (proxy != null) {
      cmProxy.mayBeCloseProxy(proxy);
    }
  }
}
 

private void stopContainerInternal(ContainerId containerId, NodeId nodeId)
    throws IOException, YarnException {
  ContainerManagementProtocolProxyData proxy = null;
  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  try {
    proxy = cmProxy.getProxy(nodeId.toString(), containerId);
    StopContainersResponse response =
        proxy.getContainerManagementProtocol().stopContainers(
          StopContainersRequest.newInstance(containerIds));
    if (response.getFailedRequests() != null
        && response.getFailedRequests().containsKey(containerId)) {
      Throwable t = response.getFailedRequests().get(containerId)
        .deSerialize();
      parseAndThrowException(t);
    }
  } finally {
    if (proxy != null) {
      cmProxy.mayBeCloseProxy(proxy);
    }
  }
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request)
    throws IOException {
  Exception e = new Exception("Dummy function", new Exception(
      "Dummy function cause"));
  throw new IOException(e);
}
 

private void cleanup() throws IOException, YarnException {
  connect();
  ContainerId containerId = masterContainer.getId();
  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  StopContainersRequest stopRequest =
      StopContainersRequest.newInstance(containerIds);
  StopContainersResponse response =
      containerMgrProxy.stopContainers(stopRequest);
  if (response.getFailedRequests() != null
      && response.getFailedRequests().containsKey(containerId)) {
    Throwable t = response.getFailedRequests().get(containerId).deSerialize();
    parseAndThrowException(t);
  }
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request)
    throws YarnException {
  LOG.info("Container cleaned up by MyContainerManager");
  cleanedup = true;
  return null;
}
 

@Override
public StopContainersResponse
    stopContainers(StopContainersRequest requests) throws YarnException,
        IOException {
  Exception e = new Exception("Dummy function", new Exception(
      "Dummy function cause"));
  throw new YarnException(e);
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request) 
throws YarnException {
  Exception e = new Exception(EXCEPTION_MSG, 
      new Exception(EXCEPTION_CAUSE));
  throw new YarnException(e);
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest requests)
    throws YarnException, IOException {
  StopContainersRequestProto requestProto =
      ((StopContainersRequestPBImpl) requests).getProto();
  try {
    return new StopContainersResponsePBImpl(proxy.stopContainers(null,
      requestProto));
  } catch (ServiceException e) {
    RPCUtil.unwrapAndThrowException(e);
    return null;
  }
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest requests)
    throws YarnException, IOException {
  StopContainersRequestProto requestProto =
      ((StopContainersRequestPBImpl) requests).getProto();
  try {
    return new StopContainersResponsePBImpl(proxy.stopContainers(null,
      requestProto));
  } catch (ServiceException e) {
    RPCUtil.unwrapAndThrowException(e);
    return null;
  }
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request)
    throws IOException {
  Exception e = new Exception("Dummy function", new Exception(
      "Dummy function cause"));
  throw new IOException(e);
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request)
    throws YarnException {
  LOG.info("Container cleaned up by MyContainerManager");
  cleanedup = true;
  return null;
}
 

private void cleanup() throws IOException, YarnException {
  connect();
  ContainerId containerId = masterContainer.getId();
  List<ContainerId> containerIds = new ArrayList<ContainerId>();
  containerIds.add(containerId);
  StopContainersRequest stopRequest =
      StopContainersRequest.newInstance(containerIds);
  StopContainersResponse response =
      containerMgrProxy.stopContainers(stopRequest);
  if (response.getFailedRequests() != null
      && response.getFailedRequests().containsKey(containerId)) {
    Throwable t = response.getFailedRequests().get(containerId).deSerialize();
    parseAndThrowException(t);
  }
}
 

@Override
public StopContainersResponse
    stopContainers(StopContainersRequest requests) throws YarnException,
        IOException {
  Exception e = new Exception("Dummy function", new Exception(
      "Dummy function cause"));
  throw new YarnException(e);
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request) 
throws YarnException {
  Exception e = new Exception(EXCEPTION_MSG, 
      new Exception(EXCEPTION_CAUSE));
  throw new YarnException(e);
}
 

@Test(timeout = 5000)
public void testHandle() throws Exception {
  LOG.info("STARTING testHandle");
  AppContext mockContext = mock(AppContext.class);
  @SuppressWarnings("rawtypes")
  EventHandler mockEventHandler = mock(EventHandler.class);
  when(mockContext.getEventHandler()).thenReturn(mockEventHandler);
  String cmAddress = "127.0.0.1:8000";
  ContainerManagementProtocolClient mockCM =
      mock(ContainerManagementProtocolClient.class);
  ContainerLauncherImplUnderTest ut =
      new ContainerLauncherImplUnderTest(mockContext, mockCM);
  
  Configuration conf = new Configuration();
  ut.init(conf);
  ut.start();
  try {
    ContainerId contId = makeContainerId(0l, 0, 0, 1);
    TaskAttemptId taskAttemptId = makeTaskAttemptId(0l, 0, 0, TaskType.MAP, 0);
    StartContainersResponse startResp =
      recordFactory.newRecordInstance(StartContainersResponse.class);
    startResp.setAllServicesMetaData(serviceResponse);
    

    LOG.info("inserting launch event");
    ContainerRemoteLaunchEvent mockLaunchEvent = 
      mock(ContainerRemoteLaunchEvent.class);
    when(mockLaunchEvent.getType())
      .thenReturn(EventType.CONTAINER_REMOTE_LAUNCH);
    when(mockLaunchEvent.getContainerID())
      .thenReturn(contId);
    when(mockLaunchEvent.getTaskAttemptID()).thenReturn(taskAttemptId);
    when(mockLaunchEvent.getContainerMgrAddress()).thenReturn(cmAddress);
    when(mockCM.startContainers(any(StartContainersRequest.class))).thenReturn(startResp);
    when(mockLaunchEvent.getContainerToken()).thenReturn(
        createNewContainerToken(contId, cmAddress));
    ut.handle(mockLaunchEvent);
    
    ut.waitForPoolToIdle();
    
    verify(mockCM).startContainers(any(StartContainersRequest.class));
    
    LOG.info("inserting cleanup event");
    ContainerLauncherEvent mockCleanupEvent = 
      mock(ContainerLauncherEvent.class);
    when(mockCleanupEvent.getType())
      .thenReturn(EventType.CONTAINER_REMOTE_CLEANUP);
    when(mockCleanupEvent.getContainerID())
      .thenReturn(contId);
    when(mockCleanupEvent.getTaskAttemptID()).thenReturn(taskAttemptId);
    when(mockCleanupEvent.getContainerMgrAddress()).thenReturn(cmAddress);
    ut.handle(mockCleanupEvent);
    
    ut.waitForPoolToIdle();
    
    verify(mockCM).stopContainers(any(StopContainersRequest.class));
  } finally {
    ut.stop();
  }
}
 

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 kill() {

  if(this.state == ContainerState.PREP) {
    this.state = ContainerState.KILLED_BEFORE_LAUNCH;
  } else if (!isCompletelyDone()) {
    LOG.info("KILLING " + taskAttemptID);

    ContainerManagementProtocolProxyData proxy = null;
    try {
      proxy = getCMProxy(this.containerMgrAddress, this.containerID);

      // kill the remote container if already launched
      List<ContainerId> ids = new ArrayList<ContainerId>();
      ids.add(this.containerID);
      StopContainersRequest request = StopContainersRequest.newInstance(ids);
      StopContainersResponse response =
          proxy.getContainerManagementProtocol().stopContainers(request);
      if (response.getFailedRequests() != null
          && response.getFailedRequests().containsKey(this.containerID)) {
        throw response.getFailedRequests().get(this.containerID)
          .deSerialize();
      }
    } catch (Throwable t) {
      // ignore the cleanup failure
      String message = "cleanup failed for container "
          + this.containerID + " : "
          + StringUtils.stringifyException(t);
      context.getEventHandler()
          .handle(
              new TaskAttemptDiagnosticsUpdateEvent(this.taskAttemptID,
                  message));
      LOG.warn(message);
    } finally {
      if (proxy != null) {
        cmProxy.mayBeCloseProxy(proxy);
      }
    }
    this.state = ContainerState.DONE;
  }
  // after killing, send killed event to task attempt
  context.getEventHandler().handle(
      new TaskAttemptEvent(this.taskAttemptID,
          TaskAttemptEventType.TA_CONTAINER_CLEANED));
}
 

@Test(timeout = 5000)
public void testOutOfOrder() throws Exception {
  LOG.info("STARTING testOutOfOrder");
  AppContext mockContext = mock(AppContext.class);
  @SuppressWarnings("rawtypes")
  EventHandler mockEventHandler = mock(EventHandler.class);
  when(mockContext.getEventHandler()).thenReturn(mockEventHandler);

  ContainerManagementProtocolClient mockCM =
      mock(ContainerManagementProtocolClient.class);
  ContainerLauncherImplUnderTest ut =
      new ContainerLauncherImplUnderTest(mockContext, mockCM);
  
  Configuration conf = new Configuration();
  ut.init(conf);
  ut.start();
  try {
    ContainerId contId = makeContainerId(0l, 0, 0, 1);
    TaskAttemptId taskAttemptId = makeTaskAttemptId(0l, 0, 0, TaskType.MAP, 0);
    String cmAddress = "127.0.0.1:8000";
    StartContainersResponse startResp =
      recordFactory.newRecordInstance(StartContainersResponse.class);
    startResp.setAllServicesMetaData(serviceResponse);

    LOG.info("inserting cleanup event");
    ContainerLauncherEvent mockCleanupEvent = 
      mock(ContainerLauncherEvent.class);
    when(mockCleanupEvent.getType())
      .thenReturn(EventType.CONTAINER_REMOTE_CLEANUP);
    when(mockCleanupEvent.getContainerID())
      .thenReturn(contId);
    when(mockCleanupEvent.getTaskAttemptID()).thenReturn(taskAttemptId);
    when(mockCleanupEvent.getContainerMgrAddress()).thenReturn(cmAddress);
    ut.handle(mockCleanupEvent);
    
    ut.waitForPoolToIdle();
    
    verify(mockCM, never()).stopContainers(any(StopContainersRequest.class));

    LOG.info("inserting launch event");
    ContainerRemoteLaunchEvent mockLaunchEvent = 
      mock(ContainerRemoteLaunchEvent.class);
    when(mockLaunchEvent.getType())
      .thenReturn(EventType.CONTAINER_REMOTE_LAUNCH);
    when(mockLaunchEvent.getContainerID())
      .thenReturn(contId);
    when(mockLaunchEvent.getTaskAttemptID()).thenReturn(taskAttemptId);
    when(mockLaunchEvent.getContainerMgrAddress()).thenReturn(cmAddress);
    when(mockCM.startContainers(any(StartContainersRequest.class))).thenReturn(startResp);
    when(mockLaunchEvent.getContainerToken()).thenReturn(
        createNewContainerToken(contId, cmAddress));
    ut.handle(mockLaunchEvent);
    
    ut.waitForPoolToIdle();
    
    verify(mockCM, never()).startContainers(any(StartContainersRequest.class));
  } finally {
    ut.stop();
  }
}
 

@Test(timeout = 5000)
public void testMyShutdown() throws Exception {
  LOG.info("in test Shutdown");

  AppContext mockContext = mock(AppContext.class);
  @SuppressWarnings("rawtypes")
  EventHandler mockEventHandler = mock(EventHandler.class);
  when(mockContext.getEventHandler()).thenReturn(mockEventHandler);

  ContainerManagementProtocolClient mockCM =
      mock(ContainerManagementProtocolClient.class);
  ContainerLauncherImplUnderTest ut =
      new ContainerLauncherImplUnderTest(mockContext, mockCM);

  Configuration conf = new Configuration();
  ut.init(conf);
  ut.start();
  try {
    ContainerId contId = makeContainerId(0l, 0, 0, 1);
    TaskAttemptId taskAttemptId = makeTaskAttemptId(0l, 0, 0, TaskType.MAP, 0);
    String cmAddress = "127.0.0.1:8000";
    StartContainersResponse startResp =
      recordFactory.newRecordInstance(StartContainersResponse.class);
    startResp.setAllServicesMetaData(serviceResponse);

    LOG.info("inserting launch event");
    ContainerRemoteLaunchEvent mockLaunchEvent =
      mock(ContainerRemoteLaunchEvent.class);
    when(mockLaunchEvent.getType())
      .thenReturn(EventType.CONTAINER_REMOTE_LAUNCH);
    when(mockLaunchEvent.getContainerID())
      .thenReturn(contId);
    when(mockLaunchEvent.getTaskAttemptID()).thenReturn(taskAttemptId);
    when(mockLaunchEvent.getContainerMgrAddress()).thenReturn(cmAddress);
    when(mockCM.startContainers(any(StartContainersRequest.class))).thenReturn(startResp);
    when(mockLaunchEvent.getContainerToken()).thenReturn(
        createNewContainerToken(contId, cmAddress));
    ut.handle(mockLaunchEvent);

    ut.waitForPoolToIdle();

    verify(mockCM).startContainers(any(StartContainersRequest.class));

    // skip cleanup and make sure stop kills the container

  } finally {
    ut.stop();
    verify(mockCM).stopContainers(any(StopContainersRequest.class));
  }
}
 

@Override
public StopContainersResponse stopContainers(StopContainersRequest request)
    throws IOException {
  return null;
}
 

@Override
  public synchronized void stopContainer() {

    if(isCompletelyDone()) {
      return;
    }
    if(this.state == ContainerState.PREP) {
      this.state = ContainerState.KILLED_BEFORE_LAUNCH;
    } else {
      LOG.info("KILLING " + containerID);

      ContainerManagementProtocol proxy = null;
      try {
        proxy = getCMProxy(this.containerID, this.containerMgrAddress,
            this.containerToken);

        // kill the remote container if already launched
        List<ContainerId> willBeStopedIds = new ArrayList<ContainerId>();
        willBeStopedIds.add(this.containerID);
        StopContainersRequest stopRequests = Records.newRecord(StopContainersRequest.class);
        stopRequests.setContainerIds(willBeStopedIds);
        proxy.stopContainers(stopRequests);
        // If stopContainer returns without an error, assuming the stop made
        // it over to the NodeManager.
//          context.getEventHandler().handle(
//              new AMContainerEvent(containerID, AMContainerEventType.C_NM_STOP_SENT));
        context.getResourceAllocator().removeContainer(containerID);
      } catch (Throwable t) {

        // ignore the cleanup failure
        String message = "cleanup failed for container "
            + this.containerID + " : "
            + StringUtils.stringifyException(t);
//          context.getEventHandler().handle(
//              new AMContainerEventStopFailed(containerID, message));
        LOG.warn(message);
        this.state = ContainerState.DONE;
        return;
      } finally {
        if (proxy != null) {
          yarnRPC.stopProxy(proxy, conf);
        }
      }
      this.state = ContainerState.DONE;
    }
  }
 

@SuppressWarnings("unchecked")
public synchronized void kill() {

  if(isCompletelyDone()) {
    return;
  }
  if(this.state == ContainerState.PREP) {
    this.state = ContainerState.KILLED_BEFORE_LAUNCH;
  } else {
    LOG.info("Sending a stop request to the NM for ContainerId: "
        + containerID);

    ContainerManagementProtocolProxyData proxy = null;
    try {
      proxy = getCMProxy(this.containerID, this.containerMgrAddress,
          this.containerToken);

        // kill the remote container if already launched
        StopContainersRequest stopRequest = Records
          .newRecord(StopContainersRequest.class);
        stopRequest.setContainerIds(Collections.singletonList(containerID));

        proxy.getContainerManagementProtocol().stopContainers(stopRequest);

        // If stopContainer returns without an error, assuming the stop made
        // it over to the NodeManager.
      context.getEventHandler().handle(
          new AMContainerEvent(containerID, AMContainerEventType.C_NM_STOP_SENT));
    } catch (Throwable t) {

      // ignore the cleanup failure
      String message = "cleanup failed for container "
        + this.containerID + " : "
        + StringUtils.stringifyException(t);
      context.getEventHandler().handle(
          new AMContainerEventStopFailed(containerID, message));
      LOG.warn(message);
      this.state = ContainerState.DONE;
      return;
    } finally {
      if (proxy != null) {
        cmProxy.mayBeCloseProxy(proxy);
      }
    }
    this.state = ContainerState.DONE;
  }
}
 

@Override
synchronized public StopContainersResponse stopContainers(StopContainersRequest request) 
throws YarnException {
  for (ContainerId containerID : request.getContainerIds()) {
    String applicationId =
        String.valueOf(containerID.getApplicationAttemptId()
          .getApplicationId().getId());
    // Mark the container as COMPLETE
    List<Container> applicationContainers = containers.get(containerID.getApplicationAttemptId()
            .getApplicationId());
    for (Container c : applicationContainers) {
      if (c.getId().compareTo(containerID) == 0) {
        ContainerStatus containerStatus = containerStatusMap.get(c);
        containerStatus.setState(ContainerState.COMPLETE);
        containerStatusMap.put(c, containerStatus);
      }
    }

    // Send a heartbeat
    try {
      heartbeat();
    } catch (IOException ioe) {
      throw RPCUtil.getRemoteException(ioe);
    }

    // Remove container and update status
    int ctr = 0;
    Container container = null;
    for (Iterator<Container> i = applicationContainers.iterator(); i
      .hasNext();) {
      container = i.next();
      if (container.getId().compareTo(containerID) == 0) {
        i.remove();
        ++ctr;
      }
    }

    if (ctr != 1) {
      throw new IllegalStateException("Container " + containerID
          + " stopped " + ctr + " times!");
    }

    Resources.addTo(available, container.getResource());
    Resources.subtractFrom(used, container.getResource());

    if (LOG.isDebugEnabled()) {
      LOG.debug("stopContainer:" + " node=" + containerManagerAddress
          + " application=" + applicationId + " container=" + containerID
          + " available=" + available + " used=" + used);
    }
  }
  return StopContainersResponse.newInstance(null,null);
}
 

@SuppressWarnings("unchecked")
public synchronized void kill() {

  if(isCompletelyDone()) {
    return;
  }
  if(this.state == ContainerState.PREP) {
    this.state = ContainerState.KILLED_BEFORE_LAUNCH;
  } else {
    LOG.info("Stopping " + containerID);

    ContainerManagementProtocolProxyData proxy = null;
    try {
      proxy = getCMProxy(this.containerID, this.containerMgrAddress,
          this.containerToken);

        // kill the remote container if already launched
        StopContainersRequest stopRequest = Records
          .newRecord(StopContainersRequest.class);
        stopRequest.setContainerIds(Collections.singletonList(containerID));

        proxy.getContainerManagementProtocol().stopContainers(stopRequest);

        // If stopContainer returns without an error, assuming the stop made
        // it over to the NodeManager.
      getContext().containerStopRequested(containerID);
    } catch (Throwable t) {

      // ignore the cleanup failure
      String message = "cleanup failed for container "
        + this.containerID + " : "
        + ExceptionUtils.getStackTrace(t);
      getContext().containerStopFailed(containerID, message);
      LOG.warn(message);
      this.state = ContainerState.DONE;
      return;
    } finally {
      if (proxy != null) {
        cmProxy.mayBeCloseProxy(proxy);
      }
    }
    this.state = ContainerState.DONE;
  }
}