Java Code Examples for org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider#getRecordFactory()

@Test
public void testGetContainerReport() throws YarnException, IOException {
  ClientRMService rmService = createRMService();
  RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
  GetContainerReportRequest request = recordFactory
      .newRecordInstance(GetContainerReportRequest.class);
  ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(
      ApplicationId.newInstance(123456, 1), 1);
  ContainerId containerId = ContainerId.newContainerId(attemptId, 1);
  request.setContainerId(containerId);

  try {
    GetContainerReportResponse response = rmService
        .getContainerReport(request);
    Assert.assertEquals(containerId, response.getContainerReport()
        .getContainerId());
  } catch (ApplicationNotFoundException ex) {
    Assert.fail(ex.getMessage());
  }
}
 

@Test
public void testNonExistingApplicationReport() throws YarnException {
  RMContext rmContext = mock(RMContext.class);
  when(rmContext.getRMApps()).thenReturn(
      new ConcurrentHashMap<ApplicationId, RMApp>());
  ClientRMService rmService = new ClientRMService(rmContext, null, null,
      null, null, null);
  RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
  GetApplicationReportRequest request = recordFactory
      .newRecordInstance(GetApplicationReportRequest.class);
  request.setApplicationId(ApplicationId.newInstance(0, 0));
  try {
    rmService.getApplicationReport(request);
    Assert.fail();
  } catch (ApplicationNotFoundException ex) {
    Assert.assertEquals(ex.getMessage(),
        "Application with id '" + request.getApplicationId()
            + "' doesn't exist in RM.");
  }
}
 

public MockContainer(ApplicationAttemptId appAttemptId,
    Dispatcher dispatcher, Configuration conf, String user,
    ApplicationId appId, int uniqId) throws IOException{

  this.user = user;
  this.recordFactory = RecordFactoryProvider.getRecordFactory(conf);
  this.id = BuilderUtils.newContainerId(recordFactory, appId, appAttemptId,
      uniqId);
  this.launchContext = recordFactory
      .newRecordInstance(ContainerLaunchContext.class);
  long currentTime = System.currentTimeMillis();
  this.containerTokenIdentifier =
      BuilderUtils.newContainerTokenIdentifier(BuilderUtils
        .newContainerToken(id, "127.0.0.1", 1234, user,
          BuilderUtils.newResource(1024, 1), currentTime + 10000, 123,
          "password".getBytes(), currentTime));
  this.state = ContainerState.NEW;
}
 

public MockContainer(ApplicationAttemptId appAttemptId,
    Dispatcher dispatcher, Configuration conf, String user,
    ApplicationId appId, int uniqId) throws IOException{

  this.user = user;
  this.recordFactory = RecordFactoryProvider.getRecordFactory(conf);
  this.id = BuilderUtils.newContainerId(recordFactory, appId, appAttemptId,
      uniqId);
  this.launchContext = recordFactory
      .newRecordInstance(ContainerLaunchContext.class);
  long currentTime = System.currentTimeMillis();
  this.containerTokenIdentifier =
      BuilderUtils.newContainerTokenIdentifier(BuilderUtils
        .newContainerToken(id, "127.0.0.1", 1234, user,
          BuilderUtils.newResource(1024, 1), currentTime + 10000, 123,
          "password".getBytes(), currentTime));
  this.state = ContainerState.NEW;
}
 

@Test
public void testGetContainers() throws YarnException, IOException {
  ClientRMService rmService = createRMService();
  RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
  GetContainersRequest request = recordFactory
      .newRecordInstance(GetContainersRequest.class);
  ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(
      ApplicationId.newInstance(123456, 1), 1);
  ContainerId containerId = ContainerId.newContainerId(attemptId, 1);
  request.setApplicationAttemptId(attemptId);
  try {
    GetContainersResponse response = rmService.getContainers(request);
    Assert.assertEquals(containerId, response.getContainerList().get(0)
        .getContainerId());
  } catch (ApplicationNotFoundException ex) {
    Assert.fail(ex.getMessage());
  }
}
 

/**
 * @param resource the local resource that contains the original remote path
 * @param localPath the path in the local filesystem where the resource is
 * localized
 * @param fs the filesystem of the shared cache
 * @param localFs the local filesystem
 */
public SharedCacheUploader(LocalResource resource, Path localPath,
    String user, Configuration conf, SCMUploaderProtocol scmClient,
    FileSystem fs, FileSystem localFs) {
  this.resource = resource;
  this.localPath = localPath;
  this.user = user;
  this.conf = conf;
  this.scmClient = scmClient;
  this.fs = fs;
  this.sharedCacheRootDir =
      conf.get(YarnConfiguration.SHARED_CACHE_ROOT,
          YarnConfiguration.DEFAULT_SHARED_CACHE_ROOT);
  this.nestedLevel = SharedCacheUtil.getCacheDepth(conf);
  this.checksum = SharedCacheChecksumFactory.getChecksum(conf);
  this.localFs = localFs;
  this.recordFactory = RecordFactoryProvider.getRecordFactory(null);
}
 

private static LocalResource createFile(String content) throws IOException {
  FileContext fs = FileContext.getLocalFSFileContext();

  java.nio.file.Path tempFile = Files.createTempFile("test-cache-manager", ".txt");
  File temp = tempFile.toFile();
  temp.deleteOnExit();
  Path p = new Path("file:///" + tempFile.toAbsolutePath().toString());

  Files.write(tempFile, content.getBytes());

  RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
  LocalResource ret = recordFactory.newRecordInstance(LocalResource.class);
  URL yarnUrlFromPath = ConverterUtils.getYarnUrlFromPath(p);
  ret.setResource(yarnUrlFromPath);
  ret.setSize(content.getBytes().length);
  ret.setType(LocalResourceType.FILE);
  ret.setVisibility(LocalResourceVisibility.PRIVATE);
  ret.setTimestamp(fs.getFileStatus(p).getModificationTime());
  return ret;
}
 

@Override
public void serviceInit(Configuration conf) throws Exception {
  this.validateConf(conf);
  this.publicRsrc = new LocalResourcesTrackerImpl(null, null, dispatcher,
      true, conf, stateStore);
  this.recordFactory = RecordFactoryProvider.getRecordFactory(conf);

  try {
    lfs = getLocalFileContext(conf);
    lfs.setUMask(new FsPermission((short) FsPermission.DEFAULT_UMASK));

    if (!stateStore.canRecover()|| stateStore.isNewlyCreated()) {
      cleanUpLocalDirs(lfs, delService);
      initializeLocalDirs(lfs);
      initializeLogDirs(lfs);
    }
  } catch (Exception e) {
    throw new YarnRuntimeException(
      "Failed to initialize LocalizationService", e);
  }

  cacheTargetSize =
    conf.getLong(YarnConfiguration.NM_LOCALIZER_CACHE_TARGET_SIZE_MB, YarnConfiguration.DEFAULT_NM_LOCALIZER_CACHE_TARGET_SIZE_MB) << 20;
  cacheCleanupPeriod =
    conf.getLong(YarnConfiguration.NM_LOCALIZER_CACHE_CLEANUP_INTERVAL_MS, YarnConfiguration.DEFAULT_NM_LOCALIZER_CACHE_CLEANUP_INTERVAL_MS);
  localizationServerAddress = conf.getSocketAddr(
      YarnConfiguration.NM_BIND_HOST,
      YarnConfiguration.NM_LOCALIZER_ADDRESS,
      YarnConfiguration.DEFAULT_NM_LOCALIZER_ADDRESS,
      YarnConfiguration.DEFAULT_NM_LOCALIZER_PORT);

  localizerTracker = createLocalizerTracker(conf);
  addService(localizerTracker);
  dispatcher.register(LocalizerEventType.class, localizerTracker);
  super.serviceInit(conf);
}
 

public MockApp(String user, long clusterTimeStamp, int uniqId) {
  super();
  this.user = user;
  // Add an application and the corresponding containers
  RecordFactory recordFactory = RecordFactoryProvider
      .getRecordFactory(new Configuration());
  this.appId = BuilderUtils.newApplicationId(recordFactory, clusterTimeStamp,
      uniqId);
  appState = ApplicationState.NEW;
}
 

private static TaskAttemptCompletionEvent createTce(int eventId,
    boolean isMap, TaskAttemptCompletionEventStatus status) {
  JobId jid = MRBuilderUtils.newJobId(12345, 1, 1);
  TaskId tid = MRBuilderUtils.newTaskId(jid, 0,
      isMap ? org.apache.hadoop.mapreduce.v2.api.records.TaskType.MAP
          : org.apache.hadoop.mapreduce.v2.api.records.TaskType.REDUCE);
  TaskAttemptId attemptId = MRBuilderUtils.newTaskAttemptId(tid, 0);
  RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
  TaskAttemptCompletionEvent tce = recordFactory
      .newRecordInstance(TaskAttemptCompletionEvent.class);
  tce.setEventId(eventId);
  tce.setAttemptId(attemptId);
  tce.setStatus(status);
  return tce;
}
 

@Test
public void testGetApplicationReport() throws Exception {
  YarnScheduler yarnScheduler = mock(YarnScheduler.class);
  RMContext rmContext = mock(RMContext.class);
  mockRMContext(yarnScheduler, rmContext);

  ApplicationId appId1 = getApplicationId(1);

  ApplicationACLsManager mockAclsManager = mock(ApplicationACLsManager.class);
  when(
      mockAclsManager.checkAccess(UserGroupInformation.getCurrentUser(),
          ApplicationAccessType.VIEW_APP, null, appId1)).thenReturn(true);

  ClientRMService rmService = new ClientRMService(rmContext, yarnScheduler,
      null, mockAclsManager, null, null);
  try {
    RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
    GetApplicationReportRequest request = recordFactory
        .newRecordInstance(GetApplicationReportRequest.class);
    request.setApplicationId(appId1);
    GetApplicationReportResponse response = 
        rmService.getApplicationReport(request);
    ApplicationReport report = response.getApplicationReport();
    ApplicationResourceUsageReport usageReport = 
        report.getApplicationResourceUsageReport();
    Assert.assertEquals(10, usageReport.getMemorySeconds());
    Assert.assertEquals(3, usageReport.getVcoreSeconds());
    Assert.assertEquals(3, usageReport.getGcoreSeconds());
  } finally {
    rmService.close();
  }
}
 

public static org.apache.hadoop.yarn.server.api.records.NodeStatus 
createNodeStatus(NodeId nodeId, List<ContainerStatus> containers) {
  RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
  org.apache.hadoop.yarn.server.api.records.NodeStatus nodeStatus = 
      recordFactory.newRecordInstance(org.apache.hadoop.yarn.server.api.records.NodeStatus.class);
  nodeStatus.setNodeId(nodeId);
  nodeStatus.setContainersStatuses(containers);
  NodeHealthStatus nodeHealthStatus = 
    recordFactory.newRecordInstance(NodeHealthStatus.class);
  nodeHealthStatus.setIsNodeHealthy(true);
  nodeStatus.setNodeHealthStatus(nodeHealthStatus);
  return nodeStatus;
}
 

@Test
public void testGetApplicationReport() throws Exception {
  YarnScheduler yarnScheduler = mock(YarnScheduler.class);
  RMContext rmContext = mock(RMContext.class);
  mockRMContext(yarnScheduler, rmContext);

  ApplicationId appId1 = getApplicationId(1);

  ApplicationACLsManager mockAclsManager = mock(ApplicationACLsManager.class);
  when(
      mockAclsManager.checkAccess(UserGroupInformation.getCurrentUser(),
          ApplicationAccessType.VIEW_APP, null, appId1)).thenReturn(true);

  ClientRMService rmService = new ClientRMService(rmContext, yarnScheduler,
      null, mockAclsManager, null, null);
  try {
    RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
    GetApplicationReportRequest request = recordFactory
        .newRecordInstance(GetApplicationReportRequest.class);
    request.setApplicationId(appId1);
    GetApplicationReportResponse response = 
        rmService.getApplicationReport(request);
    ApplicationReport report = response.getApplicationReport();
    ApplicationResourceUsageReport usageReport = 
        report.getApplicationResourceUsageReport();
    Assert.assertEquals(10, usageReport.getMemorySeconds());
    Assert.assertEquals(3, usageReport.getVcoreSeconds());
  } finally {
    rmService.close();
  }
}
 

@Override
public void startLocalizer(LocalizerStartContext ctx)
    throws IOException, InterruptedException {
  Path nmPrivateContainerTokensPath = ctx.getNmPrivateContainerTokens();
  InetSocketAddress nmAddr = ctx.getNmAddr();
  String user = ctx.getUser();
  String appId = ctx.getAppId();
  String locId = ctx.getLocId();
  LocalDirsHandlerService dirsHandler = ctx.getDirsHandler();

  List<String> localDirs = dirsHandler.getLocalDirs();
  List<String> logDirs = dirsHandler.getLogDirs();
  
  createUserLocalDirs(localDirs, user);
  createUserCacheDirs(localDirs, user);
  createAppDirs(localDirs, user, appId);
  createAppLogDirs(appId, logDirs, user);

  // randomly choose the local directory
  Path appStorageDir = getWorkingDir(localDirs, user, appId);

  String tokenFn = String.format(ContainerLocalizer.TOKEN_FILE_NAME_FMT, locId);
  Path tokenDst = new Path(appStorageDir, tokenFn);
  copyFile(nmPrivateContainerTokensPath, tokenDst, user);
  LOG.info("Copying from " + nmPrivateContainerTokensPath + " to " + tokenDst);


  FileContext localizerFc = FileContext.getFileContext(
      lfs.getDefaultFileSystem(), getConf());
  localizerFc.setUMask(lfs.getUMask());
  localizerFc.setWorkingDirectory(appStorageDir);
  LOG.info("Localizer CWD set to " + appStorageDir + " = " 
      + localizerFc.getWorkingDirectory());
  ContainerLocalizer localizer =
      new ContainerLocalizer(localizerFc, user, appId, locId, 
          getPaths(localDirs), RecordFactoryProvider.getRecordFactory(getConf()));
  // TODO: DO it over RPC for maintaining similarity?
  localizer.runLocalization(nmAddr);
}
 

@Override
public synchronized void startLocalizer(Path nmPrivateContainerTokensPath,
                                        InetSocketAddress nmAddr, String user, String appId, String locId,
                                        LocalDirsHandlerService dirsHandler)
  throws IOException, InterruptedException {

  List<String> localDirs = dirsHandler.getLocalDirs();
  List<String> logDirs = dirsHandler.getLogDirs();

  ContainerLocalizer localizer =
    new ContainerLocalizer(lfs, user, appId, locId, getPaths(localDirs),
      RecordFactoryProvider.getRecordFactory(getConf()));

  createUserLocalDirs(localDirs, user);
  createUserCacheDirs(localDirs, user);
  createAppDirs(localDirs, user, appId);
  createAppLogDirs(appId, logDirs, user);

  // randomly choose the local directory
  Path appStorageDir = getWorkingDir(localDirs, user, appId);

  String tokenFn = String.format(ContainerLocalizer.TOKEN_FILE_NAME_FMT, locId);
  Path tokenDst = new Path(appStorageDir, tokenFn);
  copyFile(nmPrivateContainerTokensPath, tokenDst, user);
  //LOG.info("Copying from " + nmPrivateContainerTokensPath + " to " + tokenDst);
  lfs.setWorkingDirectory(appStorageDir);
  //LOG.info("CWD set to " + appStorageDir + " = " + lfs.getWorkingDirectory());
  // TODO: DO it over RPC for maintaining similarity?
  localizer.runLocalization(nmAddr);
}
 

@Test
  public void testNMWebApp() throws IOException, YarnException {
    Context nmContext = new NodeManager.NMContext(null, null, null, null,
        null);
    ResourceView resourceView = new ResourceView() {
      @Override
      public long getVmemAllocatedForContainers() {
        return 0;
      }
      @Override
      public long getPmemAllocatedForContainers() {
        return 0;
      }
      @Override
      public long getVCoresAllocatedForContainers() {
        return 0;
      }
      @Override
      public long getGCoresAllocatedForContainers() {
        return 0;
      }
      @Override
      public boolean isVmemCheckEnabled() {
        return true;
      }
      @Override
      public boolean isPmemCheckEnabled() {
        return true;
      }
    };
    Configuration conf = new Configuration();
    conf.set(YarnConfiguration.NM_LOCAL_DIRS, testRootDir.getAbsolutePath());
    conf.set(YarnConfiguration.NM_LOG_DIRS, testLogDir.getAbsolutePath());
    NodeHealthCheckerService healthChecker = createNodeHealthCheckerService(conf);
    healthChecker.init(conf);
    LocalDirsHandlerService dirsHandler = healthChecker.getDiskHandler();

    WebServer server = new WebServer(nmContext, resourceView,
        new ApplicationACLsManager(conf), dirsHandler);
    server.init(conf);
    server.start();

    // Add an application and the corresponding containers
    RecordFactory recordFactory =
        RecordFactoryProvider.getRecordFactory(conf);
    Dispatcher dispatcher = new AsyncDispatcher();
    String user = "nobody";
    long clusterTimeStamp = 1234;
    ApplicationId appId =
        BuilderUtils.newApplicationId(recordFactory, clusterTimeStamp, 1);
    Application app = mock(Application.class);
    when(app.getUser()).thenReturn(user);
    when(app.getAppId()).thenReturn(appId);
    nmContext.getApplications().put(appId, app);
    ApplicationAttemptId appAttemptId = BuilderUtils.newApplicationAttemptId(
        appId, 1);
    ContainerId container1 =
        BuilderUtils.newContainerId(recordFactory, appId, appAttemptId, 0);
    ContainerId container2 =
        BuilderUtils.newContainerId(recordFactory, appId, appAttemptId, 1);
    NodeManagerMetrics metrics = mock(NodeManagerMetrics.class);
    NMStateStoreService stateStore = new NMNullStateStoreService();
    for (ContainerId containerId : new ContainerId[] { container1,
        container2}) {
      // TODO: Use builder utils
      ContainerLaunchContext launchContext =
          recordFactory.newRecordInstance(ContainerLaunchContext.class);
      long currentTime = System.currentTimeMillis();
      Token containerToken =
          BuilderUtils.newContainerToken(containerId, "127.0.0.1", 1234, user,
            BuilderUtils.newResource(1024, 1), currentTime + 10000L, 123,
            "password".getBytes(), currentTime);
      Container container =
          new ContainerImpl(conf, dispatcher, stateStore, launchContext,
            null, metrics,
            BuilderUtils.newContainerTokenIdentifier(containerToken)) {

            @Override
            public ContainerState getContainerState() {
              return ContainerState.RUNNING;
            };
          };
      nmContext.getContainers().put(containerId, container);
      //TODO: Gross hack. Fix in code.
      ApplicationId applicationId = 
          containerId.getApplicationAttemptId().getApplicationId();
      nmContext.getApplications().get(applicationId).getContainers()
          .put(containerId, container);
      writeContainerLogs(nmContext, containerId, dirsHandler);

    }
    // TODO: Pull logs and test contents.
//    Thread.sleep(1000000);
  }
 

static RecordFactory createPBRecordFactory() {
  Configuration conf = new Configuration();
  return RecordFactoryProvider.getRecordFactory(conf);
}
 

static RecordFactory createPBRecordFactory() {
  Configuration conf = new Configuration();
  return RecordFactoryProvider.getRecordFactory(conf);
}
 

@Test
  public void testNMWebApp() throws IOException, YarnException {
    Context nmContext = new NodeManager.NMContext(null, null, null, null,
        null, null);
    ResourceView resourceView = new ResourceView() {
      @Override
      public long getVmemAllocatedForContainers() {
        return 0;
      }
      @Override
      public long getPmemAllocatedForContainers() {
        return 0;
      }
      @Override
      public long getVCoresAllocatedForContainers() {
        return 0;
      }
      @Override
      public boolean isVmemCheckEnabled() {
        return true;
      }
      @Override
      public boolean isPmemCheckEnabled() {
        return true;
      }
    };
    Configuration conf = new Configuration();
    conf.set(YarnConfiguration.NM_LOCAL_DIRS, testRootDir.getAbsolutePath());
    conf.set(YarnConfiguration.NM_LOG_DIRS, testLogDir.getAbsolutePath());
    NodeHealthCheckerService healthChecker = new NodeHealthCheckerService();
    healthChecker.init(conf);
    LocalDirsHandlerService dirsHandler = healthChecker.getDiskHandler();

    WebServer server = new WebServer(nmContext, resourceView,
        new ApplicationACLsManager(conf), dirsHandler);
    server.init(conf);
    server.start();

    // Add an application and the corresponding containers
    RecordFactory recordFactory =
        RecordFactoryProvider.getRecordFactory(conf);
    Dispatcher dispatcher = new AsyncDispatcher();
    String user = "nobody";
    long clusterTimeStamp = 1234;
    ApplicationId appId =
        BuilderUtils.newApplicationId(recordFactory, clusterTimeStamp, 1);
    Application app = mock(Application.class);
    when(app.getUser()).thenReturn(user);
    when(app.getAppId()).thenReturn(appId);
    nmContext.getApplications().put(appId, app);
    ApplicationAttemptId appAttemptId = BuilderUtils.newApplicationAttemptId(
        appId, 1);
    ContainerId container1 =
        BuilderUtils.newContainerId(recordFactory, appId, appAttemptId, 0);
    ContainerId container2 =
        BuilderUtils.newContainerId(recordFactory, appId, appAttemptId, 1);
    NodeManagerMetrics metrics = mock(NodeManagerMetrics.class);
    NMStateStoreService stateStore = new NMNullStateStoreService();
    for (ContainerId containerId : new ContainerId[] { container1,
        container2}) {
      // TODO: Use builder utils
      ContainerLaunchContext launchContext =
          recordFactory.newRecordInstance(ContainerLaunchContext.class);
      long currentTime = System.currentTimeMillis();
      Token containerToken =
          BuilderUtils.newContainerToken(containerId, "127.0.0.1", 1234, user,
            BuilderUtils.newResource(1024, 1), currentTime + 10000L, 123,
            "password".getBytes(), currentTime);
      Container container =
          new ContainerImpl(nmContext, conf, dispatcher, stateStore, launchContext,
            null, metrics,
            BuilderUtils.newContainerTokenIdentifier(containerToken), null, 0, user, false, null) {

            @Override
            public ContainerState getContainerState() {
              return ContainerState.RUNNING;
            };
          };
      nmContext.getContainers().put(containerId, container);
      //TODO: Gross hack. Fix in code.
      ApplicationId applicationId = 
          containerId.getApplicationAttemptId().getApplicationId();
      nmContext.getApplications().get(applicationId).getContainers()
          .put(containerId, container);
      writeContainerLogs(nmContext, containerId, dirsHandler);

    }
    // TODO: Pull logs and test contents.
//    Thread.sleep(1000000);
  }
 

@Test
public void testNodeHealthScript() throws Exception {
  RecordFactory factory = RecordFactoryProvider.getRecordFactory(null);
  NodeHealthStatus healthStatus =
      factory.newRecordInstance(NodeHealthStatus.class);
  String errorScript = "echo ERROR\n echo \"Tracker not healthy\"";
  String normalScript = "echo \"I am all fine\"";
  String timeOutScript = Shell.WINDOWS ? "@echo off\nping -n 4 127.0.0.1 >nul\necho \"I am fine\""
      : "sleep 4\necho \"I am fine\"";
  Configuration conf = getConfForNodeHealthScript();
  conf.writeXml(new FileOutputStream(nodeHealthConfigFile));
  conf.addResource(nodeHealthConfigFile.getName());

  writeNodeHealthScriptFile(normalScript, true);
  NodeHealthCheckerService nodeHealthChecker = new NodeHealthCheckerService();
  nodeHealthChecker.init(conf);
  NodeHealthScriptRunner nodeHealthScriptRunner =
      nodeHealthChecker.getNodeHealthScriptRunner();
  TimerTask timerTask = nodeHealthScriptRunner.getTimerTask();

  timerTask.run();

  setHealthStatus(healthStatus, nodeHealthChecker.isHealthy(),
      nodeHealthChecker.getHealthReport(),
      nodeHealthChecker.getLastHealthReportTime());
  LOG.info("Checking initial healthy condition");
  // Check proper report conditions.
  Assert.assertTrue("Node health status reported unhealthy", healthStatus
      .getIsNodeHealthy());
  Assert.assertTrue("Node health status reported unhealthy", healthStatus
      .getHealthReport().equals(nodeHealthChecker.getHealthReport()));

  // write out error file.
  // Healthy to unhealthy transition
  writeNodeHealthScriptFile(errorScript, true);
  // Run timer
  timerTask.run();
  // update health status
  setHealthStatus(healthStatus, nodeHealthChecker.isHealthy(),
      nodeHealthChecker.getHealthReport(),
      nodeHealthChecker.getLastHealthReportTime());
  LOG.info("Checking Healthy--->Unhealthy");
  Assert.assertFalse("Node health status reported healthy", healthStatus
      .getIsNodeHealthy());
  Assert.assertTrue("Node health status reported healthy", healthStatus
      .getHealthReport().equals(nodeHealthChecker.getHealthReport()));
  
  // Check unhealthy to healthy transitions.
  writeNodeHealthScriptFile(normalScript, true);
  timerTask.run();
  setHealthStatus(healthStatus, nodeHealthChecker.isHealthy(),
      nodeHealthChecker.getHealthReport(),
      nodeHealthChecker.getLastHealthReportTime());
  LOG.info("Checking UnHealthy--->healthy");
  // Check proper report conditions.
  Assert.assertTrue("Node health status reported unhealthy", healthStatus
      .getIsNodeHealthy());
  Assert.assertTrue("Node health status reported unhealthy", healthStatus
      .getHealthReport().equals(nodeHealthChecker.getHealthReport()));

  // Healthy to timeout transition.
  writeNodeHealthScriptFile(timeOutScript, true);
  timerTask.run();
  setHealthStatus(healthStatus, nodeHealthChecker.isHealthy(),
      nodeHealthChecker.getHealthReport(),
      nodeHealthChecker.getLastHealthReportTime());
  LOG.info("Checking Healthy--->timeout");
  Assert.assertFalse("Node health status reported healthy even after timeout",
      healthStatus.getIsNodeHealthy());
  Assert.assertTrue("Node script time out message not propogated",
      healthStatus.getHealthReport().equals(
          NodeHealthScriptRunner.NODE_HEALTH_SCRIPT_TIMED_OUT_MSG
          + NodeHealthCheckerService.SEPARATOR
          + nodeHealthChecker.getDiskHandler().getDisksHealthReport(false)));
}