public void start() throws IOException {
    int maxLevel = 1;
    mTachyonHome =
        File.createTempFile("Tachyon", "U" + System.currentTimeMillis()).getAbsolutePath();
    mWorkerDataFolder = "/datastore";

    mHostname = NetworkAddressUtils.getLocalHostName(100);

    mMasterConf = MasterContext.getConf();
    mMasterConf.set(Constants.IN_TEST_MODE, "true");
    mMasterConf.set(Constants.TACHYON_HOME, mTachyonHome);
    mMasterConf.set(Constants.USE_ZOOKEEPER, "true");
    mMasterConf.set(Constants.MASTER_HOSTNAME, mHostname);
    mMasterConf.set(Constants.MASTER_BIND_HOST, mHostname);
    mMasterConf.set(Constants.MASTER_PORT, "0");
    mMasterConf.set(Constants.MASTER_WEB_BIND_HOST, mHostname);
    mMasterConf.set(Constants.MASTER_WEB_PORT, "0");
    mMasterConf.set(Constants.ZOOKEEPER_ADDRESS, mCuratorServer.getConnectString());
    mMasterConf.set(Constants.ZOOKEEPER_ELECTION_PATH, "/election");
    mMasterConf.set(Constants.ZOOKEEPER_LEADER_PATH, "/leader");
    mMasterConf.set(Constants.USER_QUOTA_UNIT_BYTES, "10000");
    mMasterConf.set(Constants.USER_DEFAULT_BLOCK_SIZE_BYTE, Integer.toString(mUserBlockSize));

    // Since tests are always running on a single host keep the resolution timeout low as otherwise
    // people running with strange network configurations will see very slow tests
    mMasterConf.set(Constants.HOST_RESOLUTION_TIMEOUT_MS, "250");

    // Disable hdfs client caching to avoid file system close() affecting other clients
    System.setProperty("fs.hdfs.impl.disable.cache", "true");

    // re-build the dir to set permission to 777
    deleteDir(mTachyonHome);
    mkdir(mTachyonHome);

    for (int k = 0; k < mNumOfMasters; k++) {
      final LocalTachyonMaster master = LocalTachyonMaster.create(mTachyonHome);
      master.start();
      LOG.info(
          "master NO."
              + k
              + " started, isServing: "
              + master.isServing()
              + ", address: "
              + master.getAddress());
      mMasters.add(master);
      // Each master should generate a new port for binding
      mMasterConf.set(Constants.MASTER_PORT, "0");
    }

    // Create the directories for the data and workers after LocalTachyonMaster construction,
    // because LocalTachyonMaster sets the UNDERFS_DATA_FOLDER and UNDERFS_WORKERS_FOLDER.
    mkdir(mMasterConf.get(Constants.UNDERFS_DATA_FOLDER));
    mkdir(mMasterConf.get(Constants.UNDERFS_WORKERS_FOLDER));

    LOG.info("all " + mNumOfMasters + " masters started.");
    LOG.info("waiting for a leader.");
    boolean hasLeader = false;
    while (!hasLeader) {
      for (int i = 0; i < mMasters.size(); i++) {
        if (mMasters.get(i).isServing()) {
          LOG.info(
              "master NO."
                  + i
                  + " is selected as leader. address: "
                  + mMasters.get(i).getAddress());
          hasLeader = true;
          break;
        }
      }
    }
    // Use first master port
    mMasterConf.set(Constants.MASTER_PORT, getMasterPort() + "");

    CommonUtils.sleepMs(10);

    mWorkerConf = WorkerContext.getConf();
    mWorkerConf.merge(mMasterConf);
    mWorkerConf.set(Constants.WORKER_DATA_FOLDER, mWorkerDataFolder);
    mWorkerConf.set(Constants.WORKER_MEMORY_SIZE, mWorkerCapacityBytes + "");
    mWorkerConf.set(Constants.WORKER_TO_MASTER_HEARTBEAT_INTERVAL_MS, 15 + "");

    // Setup conf for worker
    mWorkerConf.set(Constants.WORKER_MAX_TIERED_STORAGE_LEVEL, Integer.toString(maxLevel));
    mWorkerConf.set(String.format(Constants.WORKER_TIERED_STORAGE_LEVEL_ALIAS_FORMAT, 0), "MEM");
    mWorkerConf.set(
        String.format(Constants.WORKER_TIERED_STORAGE_LEVEL_DIRS_PATH_FORMAT, 0),
        mTachyonHome + "/ramdisk");
    mWorkerConf.set(
        String.format(Constants.WORKER_TIERED_STORAGE_LEVEL_DIRS_QUOTA_FORMAT, 0),
        mWorkerCapacityBytes + "");

    // Since tests are always running on a single host keep the resolution timeout low as otherwise
    // people running with strange network configurations will see very slow tests
    mWorkerConf.set(Constants.HOST_RESOLUTION_TIMEOUT_MS, "250");

    for (int level = 1; level < maxLevel; level++) {
      String tierLevelDirPath =
          String.format(Constants.WORKER_TIERED_STORAGE_LEVEL_DIRS_PATH_FORMAT, level);
      String[] dirPaths = mWorkerConf.get(tierLevelDirPath).split(",");
      String newPath = "";
      for (String dirPath : dirPaths) {
        newPath += mTachyonHome + dirPath + ",";
      }
      mWorkerConf.set(
          String.format(Constants.WORKER_TIERED_STORAGE_LEVEL_DIRS_PATH_FORMAT, level),
          newPath.substring(0, newPath.length() - 1));
    }

    mWorkerConf.set(Constants.WORKER_BIND_HOST, mHostname);
    mWorkerConf.set(Constants.WORKER_PORT, "0");
    mWorkerConf.set(Constants.WORKER_DATA_BIND_HOST, mHostname);
    mWorkerConf.set(Constants.WORKER_DATA_PORT, "0");
    mWorkerConf.set(Constants.WORKER_WEB_BIND_HOST, mHostname);
    mWorkerConf.set(Constants.WORKER_WEB_PORT, "0");
    mWorkerConf.set(Constants.WORKER_MIN_WORKER_THREADS, "1");
    mWorkerConf.set(Constants.WORKER_MAX_WORKER_THREADS, "100");

    // Perform immediate shutdown of data server. Graceful shutdown is unnecessary and slow
    mWorkerConf.set(Constants.WORKER_NETWORK_NETTY_SHUTDOWN_QUIET_PERIOD, Integer.toString(0));
    mWorkerConf.set(Constants.WORKER_NETWORK_NETTY_SHUTDOWN_TIMEOUT, Integer.toString(0));

    mWorker = new BlockWorker();
    Runnable runWorker =
        new Runnable() {
          @Override
          public void run() {
            try {
              mWorker.process();
            } catch (Exception e) {
              throw new RuntimeException(e + " \n Start Master Error \n" + e.getMessage(), e);
            }
          }
        };
    mWorkerThread = new Thread(runWorker);
    mWorkerThread.start();
    // The client context should reflect the updates to the conf.
    if (sReinitializer == null) {
      ClientContext.accessReinitializer(sReinitializerAccesser);
    }
    sReinitializer.reinitializeWithConf(mWorkerConf);
  }
Esempio n. 2
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 /**
  * Copy constructor to merge the properties of the incoming <code>TachyonConf</code>.
  *
  * @param tachyonConf The source {@link tachyon.conf.TachyonConf} to be merged.
  */
 public TachyonConf(TachyonConf tachyonConf) {
   merge(tachyonConf);
 }