コード例 #1
0
  public SocialiteAppMaster(Path _jarPath) {

    jarPath = _jarPath;
    configuration = new YarnConfiguration();
    numAllocedContainers = 0;

    nmClient = NMClient.createNMClient();
    nmClient.init(configuration);
    nmClient.start();

    rmClient = AMRMClientAsync.createAMRMClientAsync(100, this);
    rmClient.init(getConfiguration());
    rmClient.start();
  }
コード例 #2
0
  /**
   * Main run function for the application master
   *
   * @throws YarnException
   * @throws IOException
   */
  @SuppressWarnings({"unchecked"})
  public void run() throws YarnException, IOException {
    LOG.info("Starting ApplicationMaster");
    try {
      publishApplicationAttemptEvent(
          timelineClient, appAttemptID.toString(), DSEvent.DS_APP_ATTEMPT_START);
    } catch (Exception e) {
      LOG.error("App Attempt start event coud not be pulished for " + appAttemptID.toString(), e);
    }

    Credentials credentials = UserGroupInformation.getCurrentUser().getCredentials();
    DataOutputBuffer dob = new DataOutputBuffer();
    credentials.writeTokenStorageToStream(dob);
    // Now remove the AM->RM token so that containers cannot access it.
    Iterator<Token<?>> iter = credentials.getAllTokens().iterator();
    LOG.info("Executing with tokens:");
    while (iter.hasNext()) {
      Token<?> token = iter.next();
      LOG.info(token);
      if (token.getKind().equals(AMRMTokenIdentifier.KIND_NAME)) {
        iter.remove();
      }
    }
    allTokens = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());

    // Create appSubmitterUgi and add original tokens to it
    String appSubmitterUserName = System.getenv(ApplicationConstants.Environment.USER.name());
    appSubmitterUgi = UserGroupInformation.createRemoteUser(appSubmitterUserName);
    appSubmitterUgi.addCredentials(credentials);

    AMRMClientAsync.CallbackHandler allocListener = new RMCallbackHandler();
    amRMClient = AMRMClientAsync.createAMRMClientAsync(1000, allocListener);
    amRMClient.init(conf);
    amRMClient.start();

    containerListener = createNMCallbackHandler();
    nmClientAsync = new NMClientAsyncImpl(containerListener);
    nmClientAsync.init(conf);
    nmClientAsync.start();

    // Setup local RPC Server to accept status requests directly from clients
    // TODO need to setup a protocol for client to be able to communicate to
    // the RPC server
    // TODO use the rpc port info to register with the RM for the client to
    // send requests to this app master

    // Register self with ResourceManager
    // This will start heartbeating to the RM
    appMasterHostname = NetUtils.getHostname();
    RegisterApplicationMasterResponse response =
        amRMClient.registerApplicationMaster(
            appMasterHostname, appMasterRpcPort, appMasterTrackingUrl);
    // Dump out information about cluster capability as seen by the
    // resource manager
    int maxMem = response.getMaximumResourceCapability().getMemory();
    LOG.info("Max mem capabililty of resources in this cluster " + maxMem);

    int maxVCores = response.getMaximumResourceCapability().getVirtualCores();
    LOG.info("Max vcores capabililty of resources in this cluster " + maxVCores);

    // A resource ask cannot exceed the max.
    if (containerMemory > maxMem) {
      LOG.info(
          "Container memory specified above max threshold of cluster."
              + " Using max value."
              + ", specified="
              + containerMemory
              + ", max="
              + maxMem);
      containerMemory = maxMem;
    }

    if (containerVirtualCores > maxVCores) {
      LOG.info(
          "Container virtual cores specified above max threshold of cluster."
              + " Using max value."
              + ", specified="
              + containerVirtualCores
              + ", max="
              + maxVCores);
      containerVirtualCores = maxVCores;
    }

    List<Container> previousAMRunningContainers = response.getContainersFromPreviousAttempts();
    LOG.info(
        "Received "
            + previousAMRunningContainers.size()
            + " previous AM's running containers on AM registration.");
    numAllocatedContainers.addAndGet(previousAMRunningContainers.size());

    int numTotalContainersToRequest = numTotalContainers - previousAMRunningContainers.size();
    // Setup ask for containers from RM
    // Send request for containers to RM
    // Until we get our fully allocated quota, we keep on polling RM for
    // containers
    // Keep looping until all the containers are launched and shell script
    // executed on them ( regardless of success/failure).
    for (int i = 0; i < numTotalContainersToRequest; ++i) {
      ContainerRequest containerAsk = setupContainerAskForRM();
      amRMClient.addContainerRequest(containerAsk);
    }
    numRequestedContainers.set(numTotalContainersToRequest);
    try {
      publishApplicationAttemptEvent(
          timelineClient, appAttemptID.toString(), DSEvent.DS_APP_ATTEMPT_END);
    } catch (Exception e) {
      LOG.error("App Attempt start event coud not be pulished for " + appAttemptID.toString(), e);
    }
  }