Examples of org.apache.accumulo.minicluster.MiniAccumuloCluster

org.apache.accumulo.minicluster.MiniAccumuloCluster
A utility class that will create Zookeeper and Accumulo processes that write all of their data to a single local directory. This class makes it easy to test code against a real Accumulo instance. Its much more accurate for testing than MockAccumulo, but much slower than MockAccumulo. @since 1.5.0

      File tmpDir = new File(testTmpDir, "accumulo");


      MiniAccumuloConfig cfg = new MiniAccumuloConfig(tmpDir, PASSWORD);
      cfg.setNumTservers(1);


      miniCluster = new MiniAccumuloCluster(cfg);


      miniCluster.start();


      createAccumuloTable(miniCluster.getConnector("root", PASSWORD));
    }

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  @BeforeClass
  public static void startUp() throws IOException, AccumuloException, AccumuloSecurityException, TTransportException, InterruptedException {
    tableCounter = new AtomicInteger(0);
    tempFolder.create();
    accumuloCluster = new MiniAccumuloCluster(tempFolder.getRoot(), ROOT_PASS);


    accumuloCluster.start();


    connector = accumuloCluster.getConnector(ROOT, ROOT_PASS);
  }

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    }
    
    if (useMini) {
      log.info("Creating mini cluster");
      final File folder = Files.createTempDir();
      final MiniAccumuloCluster accumulo = new MiniAccumuloCluster(folder, "secret");
      accumulo.start();
      opts.prop.setProperty("instance", accumulo.getConfig().getInstanceName());
      opts.prop.setProperty("zookeepers", accumulo.getZooKeepers());
      Runtime.getRuntime().addShutdownHook(new Thread() {
        public void start() {
          try {
            accumulo.stop();
          } catch (Exception e) {
            throw new RuntimeException();
          } finally {
            if (!folder.delete())
              log.warn("Unexpected error removing " + folder);

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  public static AccumuloCluster create(AccumuloConfig cfg) throws IOException {
    return cfg.build();
  }


  public static MiniAccumuloCluster createMiniCluster(MiniAccumuloConfig cfg) throws IOException {
    return new MiniAccumuloCluster(cfg);
  }

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  @BeforeClass
  public static void setupMiniCluster() throws Exception {
    FileUtils.deleteQuietly(macTestFolder);
    macTestFolder.mkdirs();
    MiniAccumuloConfig config = new MiniAccumuloConfig(macTestFolder, secret).setNumTservers(1);
    accumulo = new MiniAccumuloCluster(config);
    accumulo.start();
    // wait for accumulo to be up and functional
    ZooKeeperInstance zoo = new ZooKeeperInstance(accumulo.getInstanceName(), accumulo.getZooKeepers());
    Connector c = zoo.getConnector("root", new PasswordToken(secret.getBytes()));
    for (@SuppressWarnings("unused") Entry<org.apache.accumulo.core.data.Key,Value> entry : c.createScanner(MetadataTable.NAME, Authorizations.EMPTY))

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    folder.create();


    Logger.getLogger("org.apache.zookeeper").setLevel(Level.ERROR);


    accumulo = new MiniAccumuloCluster(folder.getRoot(), "superSecret");


    accumulo.start();


  }

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        tempDir.deleteOnExit();
        final MiniAccumuloConfig config = new MiniAccumuloConfig(
            tempDir,
            DEFAULT_MINI_ACCUMULO_PASSWORD);
        config.setNumTservers(2);
        miniAccumulo = new MiniAccumuloCluster(
            config);
        if (SystemUtils.IS_OS_WINDOWS && isYarn()) {
          // this must happen after instantiating Mini Accumulo
          // Cluster because it ensures the accumulo directory is
          // empty or it will fail, but must happen before the cluster

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