Examples of org.apache.accumulo.core.client.ZooKeeperInstance

org.apache.accumulo.core.client.ZooKeeperInstance

An implementation of instance that looks in zookeeper to find information needed to connect to an instance of accumulo.
The advantage of using zookeeper to obtain information about accumulo is that zookeeper is highly available, very responsive, and supports caching.
Because it is possible for multiple instances of accumulo to share a single set of zookeeper servers, all constructors require an accumulo instance name. If you do not know the instance names then run accumulo org.apache.accumulo.server.util.ListInstances on an accumulo server.


    if (null == zooKeepers) {
      return null;
    }


    return new ZooKeeperInstance(ClientConfiguration.loadDefault().withInstance(getInstanceName()).withZkHosts(getZooKeepers()));
  }

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      if (keepers == null) {
        keepers = conf.get(Property.INSTANCE_ZK_HOST);
      }
    }
    if (instanceId != null) {
      return new ZooKeeperInstance(clientConfig.withInstance(instanceId).withZkHosts(keepers));
    } else {
      return new ZooKeeperInstance(clientConfig.withInstance(instanceName).withZkHosts(keepers));
    }
  }

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   * 
   * @since 1.6.0
   */
  @Override
  public Connector getConnector(String user, String passwd) throws AccumuloException, AccumuloSecurityException {
    Instance instance = new ZooKeeperInstance(getClientConfig());
    return instance.getConnector(user, new PasswordToken(passwd));
  }

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   */
  public MasterMonitorInfo getMasterMonitorInfo() throws AccumuloException, AccumuloSecurityException {
    MasterClientService.Iface client = null;
    MasterMonitorInfo stats = null;
    try {
      Instance instance = new ZooKeeperInstance(getClientConfig());
      client = MasterClient.getConnectionWithRetry(instance);
      stats = client.getMasterStats(Tracer.traceInfo(), SystemCredentials.get(instance).toThrift(instance));
    } catch (ThriftSecurityException exception) {
      throw new AccumuloSecurityException(exception);
    } catch (TException exception) {

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    else if ("ZooKeeperInstance".equals(instanceType)) {
      String clientConfigString = conf.get(enumToConfKey(implementingClass, InstanceOpts.CLIENT_CONFIG));
      if (clientConfigString == null) {
        String instanceName = conf.get(enumToConfKey(implementingClass, InstanceOpts.NAME));
        String zookeepers = conf.get(enumToConfKey(implementingClass, InstanceOpts.ZOO_KEEPERS));
        return new ZooKeeperInstance(ClientConfiguration.loadDefault().withInstance(instanceName).withZkHosts(zookeepers));
      } else {
        return new ZooKeeperInstance(ClientConfiguration.deserialize(clientConfigString));
      }
    } else if (instanceType.isEmpty())
      throw new IllegalStateException("Instance has not been configured for " + implementingClass.getSimpleName());
    else
      throw new IllegalStateException("Unrecognized instance type " + instanceType);

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          String instance = DataStoreFactory.findProperty(properties, this, INSTANCE_NAME_PROPERTY, null);
          String zookeepers = DataStoreFactory.findProperty(properties, this, ZOOKEEPERS_NAME_PROPERTY, null);
          credentials = new TCredentials(user, 
              "org.apache.accumulo.core.client.security.tokens.PasswordToken", 
              ByteBuffer.wrap(password.getBytes()), instance);
          conn = new ZooKeeperInstance(instance, zookeepers).getConnector(user, token);
        } else {
          conn = new MockInstance().getConnector(user, new PasswordToken(password));
          credentials = new TCredentials(user, 
              "org.apache.accumulo.core.client.security.tokens.PasswordToken", 
              ByteBuffer.wrap(password.getBytes()), conn.getInstance().getInstanceID());

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    String useMock = props.getProperty("useMockInstance");
    if (useMock != null && Boolean.parseBoolean(useMock))
      instance = new MockInstance();
    else
      instance = new ZooKeeperInstance(props.getProperty("instance"), props.getProperty("zookeepers"));
    
    scannerCache = CacheBuilder.newBuilder().expireAfterAccess(10, TimeUnit.MINUTES).maximumSize(1000).removalListener(new CloseScanner()).build();
    
    writerCache = CacheBuilder.newBuilder().expireAfterAccess(10, TimeUnit.MINUTES).maximumSize(1000).removalListener(new CloseWriter()).build();
  }

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   * @see #setMockInstance(Configuration, String)
   */
  protected static Instance getInstance(Configuration conf) {
    if (conf.getBoolean(MOCK, false))
      return new MockInstance(conf.get(INSTANCE_NAME));
    return new ZooKeeperInstance(conf.get(INSTANCE_NAME), conf.get(ZOOKEEPERS));
  }

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    return job.getConfiguration().get(DEFAULT_TABLE_NAME);
  }
  
  protected static Instance getInstance(JobContext job) {
    Configuration conf = job.getConfiguration();
    return new ZooKeeperInstance(conf.get(INSTANCE_NAME), conf.get(ZOOKEEPERS));
  }

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    String inTable = args[2];
    String outTable = args[3];
    String user = args[4];
    String pass = args[5];
    
    ZooKeeperInstance zki = new ZooKeeperInstance(instance, zooKeepers);
    Connector conn = zki.getConnector(user, pass.getBytes());
    
    Scanner scanner = conn.createScanner(inTable, Constants.NO_AUTHS);
    BatchWriter bw = conn.createBatchWriter(outTable, 50000000, 600000l, 4);
    
    for (Entry<Key,Value> entry : scanner) {

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