org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.AMLivelinessMonitor Java Examples

The following examples show how to use org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.AMLivelinessMonitor. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: MyriadOperationsTest.java    From incubator-myriad with Apache License 2.0 6 votes vote down vote up 
private RMContext generateRMContext(AbstractYarnScheduler<FiCaSchedulerApp, FiCaSchedulerNode> scheduler) throws Exception {
  Configuration conf = new Configuration();
  MockRMContext context = null;
  Dispatcher dispatcher = new MockDispatcher();

  RMApplicationHistoryWriter rmApplicationHistoryWriter = new RMApplicationHistoryWriter(); 
  AMLivelinessMonitor amLivelinessMonitor = new AMLivelinessMonitor(dispatcher);
  AMLivelinessMonitor amFinishingMonitor = new AMLivelinessMonitor(dispatcher);    
  RMDelegationTokenSecretManager delegationTokenSecretManager = new RMDelegationTokenSecretManager(1, 1, 1, 1, context);

  context = new MockRMContext();
  context.setStateStore(TestObjectFactory.getStateStore(conf, "tmp/myriad-operations-test"));
  context.setAmLivelinessMonitor(amLivelinessMonitor);
  context.setAmFinishingMonitor(amFinishingMonitor);
  context.setRMApplicationHistoryWriter(rmApplicationHistoryWriter);
  context.setRMDelegationTokenSecretManager(delegationTokenSecretManager);
  return context;
}
Example #2
Source File: RMContextImpl.java    From big-c with Apache License 2.0 6 votes vote down vote up 
@VisibleForTesting
// helper constructor for tests
public RMContextImpl(Dispatcher rmDispatcher,
    ContainerAllocationExpirer containerAllocationExpirer,
    AMLivelinessMonitor amLivelinessMonitor,
    AMLivelinessMonitor amFinishingMonitor,
    DelegationTokenRenewer delegationTokenRenewer,
    AMRMTokenSecretManager appTokenSecretManager,
    RMContainerTokenSecretManager containerTokenSecretManager,
    NMTokenSecretManagerInRM nmTokenSecretManager,
    ClientToAMTokenSecretManagerInRM clientToAMTokenSecretManager,
    RMApplicationHistoryWriter rmApplicationHistoryWriter) {
  this(
    rmDispatcher,
    containerAllocationExpirer,
    amLivelinessMonitor,
    amFinishingMonitor,
    delegationTokenRenewer,
    appTokenSecretManager,
    containerTokenSecretManager,
    nmTokenSecretManager,
    clientToAMTokenSecretManager,
    rmApplicationHistoryWriter,
    null);
}
Example #3
Source File: RMContextImpl.java    From big-c with Apache License 2.0 6 votes vote down vote up 
@VisibleForTesting
// helper constructor for tests
public RMContextImpl(Dispatcher rmDispatcher,
    ContainerAllocationExpirer containerAllocationExpirer,
    AMLivelinessMonitor amLivelinessMonitor,
    AMLivelinessMonitor amFinishingMonitor,
    DelegationTokenRenewer delegationTokenRenewer,
    AMRMTokenSecretManager appTokenSecretManager,
    RMContainerTokenSecretManager containerTokenSecretManager,
    NMTokenSecretManagerInRM nmTokenSecretManager,
    ClientToAMTokenSecretManagerInRM clientToAMTokenSecretManager,
    RMApplicationHistoryWriter rmApplicationHistoryWriter,
    ResourceScheduler scheduler) {
  this();
  this.setDispatcher(rmDispatcher);
  setActiveServiceContext(new RMActiveServiceContext(rmDispatcher,
      containerAllocationExpirer, amLivelinessMonitor, amFinishingMonitor,
      delegationTokenRenewer, appTokenSecretManager,
      containerTokenSecretManager, nmTokenSecretManager,
      clientToAMTokenSecretManager, rmApplicationHistoryWriter,
      scheduler));

  ConfigurationProvider provider = new LocalConfigurationProvider();
  setConfigurationProvider(provider);
}
Example #4
Source File: RMContextImpl.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
@VisibleForTesting
// helper constructor for tests
public RMContextImpl(Dispatcher rmDispatcher,
    ContainerAllocationExpirer containerAllocationExpirer,
    AMLivelinessMonitor amLivelinessMonitor,
    AMLivelinessMonitor amFinishingMonitor,
    DelegationTokenRenewer delegationTokenRenewer,
    AMRMTokenSecretManager appTokenSecretManager,
    RMContainerTokenSecretManager containerTokenSecretManager,
    NMTokenSecretManagerInRM nmTokenSecretManager,
    ClientToAMTokenSecretManagerInRM clientToAMTokenSecretManager,
    RMApplicationHistoryWriter rmApplicationHistoryWriter) {
  this(
    rmDispatcher,
    containerAllocationExpirer,
    amLivelinessMonitor,
    amFinishingMonitor,
    delegationTokenRenewer,
    appTokenSecretManager,
    containerTokenSecretManager,
    nmTokenSecretManager,
    clientToAMTokenSecretManager,
    rmApplicationHistoryWriter,
    null);
}
Example #5
Source File: RMContextImpl.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
@VisibleForTesting
// helper constructor for tests
public RMContextImpl(Dispatcher rmDispatcher,
    ContainerAllocationExpirer containerAllocationExpirer,
    AMLivelinessMonitor amLivelinessMonitor,
    AMLivelinessMonitor amFinishingMonitor,
    DelegationTokenRenewer delegationTokenRenewer,
    AMRMTokenSecretManager appTokenSecretManager,
    RMContainerTokenSecretManager containerTokenSecretManager,
    NMTokenSecretManagerInRM nmTokenSecretManager,
    ClientToAMTokenSecretManagerInRM clientToAMTokenSecretManager,
    RMApplicationHistoryWriter rmApplicationHistoryWriter,
    ResourceScheduler scheduler) {
  this();
  this.setDispatcher(rmDispatcher);
  setActiveServiceContext(new RMActiveServiceContext(rmDispatcher,
      containerAllocationExpirer, amLivelinessMonitor, amFinishingMonitor,
      delegationTokenRenewer, appTokenSecretManager,
      containerTokenSecretManager, nmTokenSecretManager,
      clientToAMTokenSecretManager, rmApplicationHistoryWriter,
      scheduler));

  ConfigurationProvider provider = new LocalConfigurationProvider();
  setConfigurationProvider(provider);
}
Example #6
Source File: RMActiveServiceContext.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Private
@Unstable
public RMActiveServiceContext(Dispatcher rmDispatcher,
    ContainerAllocationExpirer containerAllocationExpirer,
    AMLivelinessMonitor amLivelinessMonitor,
    AMLivelinessMonitor amFinishingMonitor,
    DelegationTokenRenewer delegationTokenRenewer,
    AMRMTokenSecretManager appTokenSecretManager,
    RMContainerTokenSecretManager containerTokenSecretManager,
    NMTokenSecretManagerInRM nmTokenSecretManager,
    ClientToAMTokenSecretManagerInRM clientToAMTokenSecretManager,
    RMApplicationHistoryWriter rmApplicationHistoryWriter,
    ResourceScheduler scheduler) {
  this();
  this.setContainerAllocationExpirer(containerAllocationExpirer);
  this.setAMLivelinessMonitor(amLivelinessMonitor);
  this.setAMFinishingMonitor(amFinishingMonitor);
  this.setDelegationTokenRenewer(delegationTokenRenewer);
  this.setAMRMTokenSecretManager(appTokenSecretManager);
  this.setContainerTokenSecretManager(containerTokenSecretManager);
  this.setNMTokenSecretManager(nmTokenSecretManager);
  this.setClientToAMTokenSecretManager(clientToAMTokenSecretManager);
  this.setRMApplicationHistoryWriter(rmApplicationHistoryWriter);
  this.setScheduler(scheduler);

  RMStateStore nullStore = new NullRMStateStore();
  nullStore.setRMDispatcher(rmDispatcher);
  try {
    nullStore.init(new YarnConfiguration());
    setStateStore(nullStore);
  } catch (Exception e) {
    assert false;
  }
}
Example #7
Source File: TestAppManager.java    From big-c with Apache License 2.0 5 votes vote down vote up 
public RMContext mockRMContext(int n, long time) {
  final List<RMApp> apps = newRMApps(n, time, RMAppState.FINISHED);
  final ConcurrentMap<ApplicationId, RMApp> map = Maps.newConcurrentMap();
  for (RMApp app : apps) {
    map.put(app.getApplicationId(), app);
  }
  Dispatcher rmDispatcher = new AsyncDispatcher();
  ContainerAllocationExpirer containerAllocationExpirer = new ContainerAllocationExpirer(
      rmDispatcher);
  AMLivelinessMonitor amLivelinessMonitor = new AMLivelinessMonitor(
      rmDispatcher);
  AMLivelinessMonitor amFinishingMonitor = new AMLivelinessMonitor(
      rmDispatcher);
  RMApplicationHistoryWriter writer = mock(RMApplicationHistoryWriter.class);
  RMContext context = new RMContextImpl(rmDispatcher,
      containerAllocationExpirer, amLivelinessMonitor, amFinishingMonitor,
      null, null, null, null, null, writer) {
    @Override
    public ConcurrentMap<ApplicationId, RMApp> getRMApps() {
      return map;
    }
  };
  ((RMContextImpl)context).setStateStore(mock(RMStateStore.class));
  metricsPublisher = mock(SystemMetricsPublisher.class);
  ((RMContextImpl)context).setSystemMetricsPublisher(metricsPublisher);
  return context;
}
Example #8
Source File: RMActiveServiceContext.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Private
@Unstable
public RMActiveServiceContext(Dispatcher rmDispatcher,
    ContainerAllocationExpirer containerAllocationExpirer,
    AMLivelinessMonitor amLivelinessMonitor,
    AMLivelinessMonitor amFinishingMonitor,
    DelegationTokenRenewer delegationTokenRenewer,
    AMRMTokenSecretManager appTokenSecretManager,
    RMContainerTokenSecretManager containerTokenSecretManager,
    NMTokenSecretManagerInRM nmTokenSecretManager,
    ClientToAMTokenSecretManagerInRM clientToAMTokenSecretManager,
    RMApplicationHistoryWriter rmApplicationHistoryWriter,
    ResourceScheduler scheduler) {
  this();
  this.setContainerAllocationExpirer(containerAllocationExpirer);
  this.setAMLivelinessMonitor(amLivelinessMonitor);
  this.setAMFinishingMonitor(amFinishingMonitor);
  this.setDelegationTokenRenewer(delegationTokenRenewer);
  this.setAMRMTokenSecretManager(appTokenSecretManager);
  this.setContainerTokenSecretManager(containerTokenSecretManager);
  this.setNMTokenSecretManager(nmTokenSecretManager);
  this.setClientToAMTokenSecretManager(clientToAMTokenSecretManager);
  this.setRMApplicationHistoryWriter(rmApplicationHistoryWriter);
  this.setScheduler(scheduler);

  RMStateStore nullStore = new NullRMStateStore();
  nullStore.setRMDispatcher(rmDispatcher);
  try {
    nullStore.init(new YarnConfiguration());
    setStateStore(nullStore);
  } catch (Exception e) {
    assert false;
  }
}
Example #9
Source File: TestAppManager.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
public RMContext mockRMContext(int n, long time) {
  final List<RMApp> apps = newRMApps(n, time, RMAppState.FINISHED);
  final ConcurrentMap<ApplicationId, RMApp> map = Maps.newConcurrentMap();
  for (RMApp app : apps) {
    map.put(app.getApplicationId(), app);
  }
  Dispatcher rmDispatcher = new AsyncDispatcher();
  ContainerAllocationExpirer containerAllocationExpirer = new ContainerAllocationExpirer(
      rmDispatcher);
  AMLivelinessMonitor amLivelinessMonitor = new AMLivelinessMonitor(
      rmDispatcher);
  AMLivelinessMonitor amFinishingMonitor = new AMLivelinessMonitor(
      rmDispatcher);
  RMApplicationHistoryWriter writer = mock(RMApplicationHistoryWriter.class);
  RMContext context = new RMContextImpl(rmDispatcher,
      containerAllocationExpirer, amLivelinessMonitor, amFinishingMonitor,
      null, null, null, null, null, writer) {
    @Override
    public ConcurrentMap<ApplicationId, RMApp> getRMApps() {
      return map;
    }
  };
  ((RMContextImpl)context).setStateStore(mock(RMStateStore.class));
  metricsPublisher = mock(SystemMetricsPublisher.class);
  ((RMContextImpl)context).setSystemMetricsPublisher(metricsPublisher);
  return context;
}
Example #10
Source File: RMappTracerTest.java    From garmadon with Apache License 2.0 5 votes vote down vote up 
@Test
@AgentAttachmentRule.Enforce
public void RMAppTracer_should_not_failed_attaching_RMContextImpl_constructior_due_to_TriConsumer_visibility() throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, URISyntaxException, IOException, InstantiationException, NoSuchFieldException, InterruptedException {
    assertThat(ByteBuddyAgent.install(), instanceOf(Instrumentation.class));

    final Header[] header = new Header[1];
    final Object[] event = new Object[1];
    TriConsumer<Long, Header, Object> cons = (t, h, o) -> {
        header[0] = h;
        event[0] = o;
    };
    ReflectionHelper.setField(null, classLoader.loadClass(RMAppTracer.class.getName()), "eventHandler", cons);

    ClassFileTransformer classFileTransformer = new RMAppTracer.RMContextImplThread().installOnByteBuddyAgent();

    try {
        Class<?> clazz = classLoader.loadClass(RMContextImpl.class.getName());
        Constructor<?> constructor = clazz.getDeclaredConstructor(Dispatcher.class, ContainerAllocationExpirer.class,
                AMLivelinessMonitor.class, AMLivelinessMonitor.class, DelegationTokenRenewer.class, AMRMTokenSecretManager.class,
                RMContainerTokenSecretManager.class, NMTokenSecretManagerInRM.class, ClientToAMTokenSecretManagerInRM.class,
                RMApplicationHistoryWriter.class);

        constructor.newInstance(mock(Dispatcher.class),
                mock(ContainerAllocationExpirer.class),
                mock(AMLivelinessMonitor.class),
                mock(AMLivelinessMonitor.class),
                mock(DelegationTokenRenewer.class),
                mock(AMRMTokenSecretManager.class),
                mock(RMContainerTokenSecretManager.class),
                mock(NMTokenSecretManagerInRM.class),
                mock(ClientToAMTokenSecretManagerInRM.class),
                mock(RMApplicationHistoryWriter.class));
    } finally {
        ByteBuddyAgent.getInstrumentation().removeTransformer(classFileTransformer);
    }
}
Example #11
Source File: MockRMContext.java    From incubator-myriad with Apache License 2.0 4 votes vote down vote up 
public void setAmFinishingMonitor(AMLivelinessMonitor amFinishingMonitor) {
  this.amFinishingMonitor = amFinishingMonitor;
}
Example #12
Source File: MockRMContext.java    From incubator-myriad with Apache License 2.0 4 votes vote down vote up 
public void setAmLivelinessMonitor(AMLivelinessMonitor amLivelinessMonitor) {
  this.amLivelinessMonitor = amLivelinessMonitor;
}
Example #13
Source File: TestRMAppTransitions.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Before
public void setUp() throws Exception {
  conf = new YarnConfiguration();
  AuthenticationMethod authMethod = AuthenticationMethod.SIMPLE;
  if (isSecurityEnabled) {
    authMethod = AuthenticationMethod.KERBEROS;
  }
  SecurityUtil.setAuthenticationMethod(authMethod, conf);
  UserGroupInformation.setConfiguration(conf);

  rmDispatcher = new DrainDispatcher();
  ContainerAllocationExpirer containerAllocationExpirer = 
      mock(ContainerAllocationExpirer.class);
  AMLivelinessMonitor amLivelinessMonitor = mock(AMLivelinessMonitor.class);
  AMLivelinessMonitor amFinishingMonitor = mock(AMLivelinessMonitor.class);
  store = mock(RMStateStore.class);
  writer = mock(RMApplicationHistoryWriter.class);
  DelegationTokenRenewer renewer = mock(DelegationTokenRenewer.class);
  RMContext realRMContext = 
      new RMContextImpl(rmDispatcher,
        containerAllocationExpirer, amLivelinessMonitor, amFinishingMonitor,
        renewer, new AMRMTokenSecretManager(conf, this.rmContext),
        new RMContainerTokenSecretManager(conf),
        new NMTokenSecretManagerInRM(conf),
        new ClientToAMTokenSecretManagerInRM(),
        writer);
  ((RMContextImpl)realRMContext).setStateStore(store);
  publisher = mock(SystemMetricsPublisher.class);
  ((RMContextImpl)realRMContext).setSystemMetricsPublisher(publisher);

  this.rmContext = spy(realRMContext);

  ResourceScheduler resourceScheduler = mock(ResourceScheduler.class);
  doReturn(null).when(resourceScheduler)
            .getAppResourceUsageReport((ApplicationAttemptId)Matchers.any());
  doReturn(resourceScheduler).when(rmContext).getScheduler();

  rmDispatcher.register(RMAppAttemptEventType.class,
      new TestApplicationAttemptEventDispatcher(this.rmContext));

  rmDispatcher.register(RMAppEventType.class,
      new TestApplicationEventDispatcher(rmContext));
  
  rmDispatcher.register(RMAppManagerEventType.class,
      new TestApplicationManagerEventDispatcher());
  
  schedulerDispatcher = new TestSchedulerEventDispatcher();
  rmDispatcher.register(SchedulerEventType.class,
      schedulerDispatcher);
  
  rmDispatcher.init(conf);
  rmDispatcher.start();
}
Example #14
Source File: RMActiveServiceContext.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
public AMLivelinessMonitor getAMLivelinessMonitor() {
  return this.amLivelinessMonitor;
}
Example #15
Source File: RMContextImpl.java    From big-c with Apache License 2.0 4 votes vote down vote up 
void setAMFinishingMonitor(AMLivelinessMonitor amFinishingMonitor) {
  activeServiceContext.setAMFinishingMonitor(amFinishingMonitor);
}
Example #16
Source File: RMContextImpl.java    From big-c with Apache License 2.0 4 votes vote down vote up 
void setAMLivelinessMonitor(AMLivelinessMonitor amLivelinessMonitor) {
  activeServiceContext.setAMLivelinessMonitor(amLivelinessMonitor);
}
Example #17
Source File: RMContextImpl.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Override
public AMLivelinessMonitor getAMFinishingMonitor() {
  return activeServiceContext.getAMFinishingMonitor();
}
Example #18
Source File: RMContextImpl.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Override
public AMLivelinessMonitor getAMLivelinessMonitor() {
  return activeServiceContext.getAMLivelinessMonitor();
}
Example #19
Source File: RMActiveServiceContext.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
public AMLivelinessMonitor getAMFinishingMonitor() {
  return this.amFinishingMonitor;
}
Example #20
Source File: RMActiveServiceContext.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
void setAMLivelinessMonitor(AMLivelinessMonitor amLivelinessMonitor) {
  this.amLivelinessMonitor = amLivelinessMonitor;
}
Example #21
Source File: MockRMContext.java    From incubator-myriad with Apache License 2.0 4 votes vote down vote up 
@Override
public AMLivelinessMonitor getAMLivelinessMonitor() {
  return amLivelinessMonitor;
}
Example #22
Source File: MockRMContext.java    From incubator-myriad with Apache License 2.0 4 votes vote down vote up 
@Override
public AMLivelinessMonitor getAMFinishingMonitor() {
  return amFinishingMonitor;
}
Example #23
Source File: ResourceManager.java    From big-c with Apache License 2.0 4 votes vote down vote up 
protected AMLivelinessMonitor createAMLivelinessMonitor() {
  return new AMLivelinessMonitor(this.rmDispatcher);
}
Example #24
Source File: RMActiveServiceContext.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
void setAMFinishingMonitor(AMLivelinessMonitor amFinishingMonitor) {
  this.amFinishingMonitor = amFinishingMonitor;
}
Example #25
Source File: RMActiveServiceContext.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
void setAMLivelinessMonitor(AMLivelinessMonitor amLivelinessMonitor) {
  this.amLivelinessMonitor = amLivelinessMonitor;
}
Example #26
Source File: RMActiveServiceContext.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
public AMLivelinessMonitor getAMFinishingMonitor() {
  return this.amFinishingMonitor;
}
Example #27
Source File: RMActiveServiceContext.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
public AMLivelinessMonitor getAMLivelinessMonitor() {
  return this.amLivelinessMonitor;
}
Example #28
Source File: RMActiveServiceContext.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Private
@Unstable
void setAMFinishingMonitor(AMLivelinessMonitor amFinishingMonitor) {
  this.amFinishingMonitor = amFinishingMonitor;
}
Example #29
Source File: TestRMAppTransitions.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Before
public void setUp() throws Exception {
  conf = new YarnConfiguration();
  AuthenticationMethod authMethod = AuthenticationMethod.SIMPLE;
  if (isSecurityEnabled) {
    authMethod = AuthenticationMethod.KERBEROS;
  }
  SecurityUtil.setAuthenticationMethod(authMethod, conf);
  UserGroupInformation.setConfiguration(conf);

  rmDispatcher = new DrainDispatcher();
  ContainerAllocationExpirer containerAllocationExpirer = 
      mock(ContainerAllocationExpirer.class);
  AMLivelinessMonitor amLivelinessMonitor = mock(AMLivelinessMonitor.class);
  AMLivelinessMonitor amFinishingMonitor = mock(AMLivelinessMonitor.class);
  store = mock(RMStateStore.class);
  writer = mock(RMApplicationHistoryWriter.class);
  DelegationTokenRenewer renewer = mock(DelegationTokenRenewer.class);
  RMContext realRMContext = 
      new RMContextImpl(rmDispatcher,
        containerAllocationExpirer, amLivelinessMonitor, amFinishingMonitor,
        renewer, new AMRMTokenSecretManager(conf, this.rmContext),
        new RMContainerTokenSecretManager(conf),
        new NMTokenSecretManagerInRM(conf),
        new ClientToAMTokenSecretManagerInRM(),
        writer);
  ((RMContextImpl)realRMContext).setStateStore(store);
  publisher = mock(SystemMetricsPublisher.class);
  ((RMContextImpl)realRMContext).setSystemMetricsPublisher(publisher);

  this.rmContext = spy(realRMContext);

  ResourceScheduler resourceScheduler = mock(ResourceScheduler.class);
  doReturn(null).when(resourceScheduler)
            .getAppResourceUsageReport((ApplicationAttemptId)Matchers.any());
  doReturn(resourceScheduler).when(rmContext).getScheduler();

  rmDispatcher.register(RMAppAttemptEventType.class,
      new TestApplicationAttemptEventDispatcher(this.rmContext));

  rmDispatcher.register(RMAppEventType.class,
      new TestApplicationEventDispatcher(rmContext));
  
  rmDispatcher.register(RMAppManagerEventType.class,
      new TestApplicationManagerEventDispatcher());
  
  schedulerDispatcher = new TestSchedulerEventDispatcher();
  rmDispatcher.register(SchedulerEventType.class,
      schedulerDispatcher);
  
  rmDispatcher.init(conf);
  rmDispatcher.start();
}
Example #30
Source File: ResourceManager.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
protected AMLivelinessMonitor createAMLivelinessMonitor() {
  return new AMLivelinessMonitor(this.rmDispatcher);
}