Java Code Examples for org.apache.zookeeper.server.NIOServerCnxnFactory#shutdown()

The following examples show how to use org.apache.zookeeper.server.NIOServerCnxnFactory#shutdown() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: MiniZooKeeperCluster.java From dremio-oss with Apache License 2.0

6 votes

/**
 * @throws IOException
 */
public void shutdown() throws IOException {
  if (!started) {
    return;
  }
  // shut down all the zk servers
  for (int i = 0; i < standaloneServerFactoryList.size(); i++) {
    NIOServerCnxnFactory standaloneServerFactory =
      standaloneServerFactoryList.get(i);
    int clientPort = clientPortList.get(i);

    standaloneServerFactory.shutdown();
    if (!waitForServerDown(clientPort, CONNECTION_TIMEOUT)) {
      throw new IOException("Waiting for shutdown of standalone server");
    }
  }

  // clear everything
  started = false;
  activeZKServerIndex = 0;
  standaloneServerFactoryList.clear();
  clientPortList.clear();
  zooKeeperServers.clear();

  logger.info("Shutdown MiniZK cluster with all ZK servers");
}

Example 2

Source File: MiniZooKeeperCluster.java From dremio-oss with Apache License 2.0

6 votes

/**
 * Kill one back up ZK servers
 *
 * @throws IOException
 * @throws InterruptedException
 */
public void killOneBackupZooKeeperServer() throws IOException,
  InterruptedException {
  if (!started || activeZKServerIndex < 0 ||
    standaloneServerFactoryList.size() <= 1) {
    return;
  }

  int backupZKServerIndex = activeZKServerIndex + 1;
  // Shutdown the current active one
  NIOServerCnxnFactory standaloneServerFactory =
    standaloneServerFactoryList.get(backupZKServerIndex);
  int clientPort = clientPortList.get(backupZKServerIndex);

  standaloneServerFactory.shutdown();
  if (!waitForServerDown(clientPort, CONNECTION_TIMEOUT)) {
    throw new IOException("Waiting for shutdown of standalone server");
  }

  // remove this backup zk server
  standaloneServerFactoryList.remove(backupZKServerIndex);
  clientPortList.remove(backupZKServerIndex);
  zooKeeperServers.remove(backupZKServerIndex);
  logger.info("Kill one backup ZK servers in the cluster " +
    "on client port: " + clientPort);
}

Example 3

Source File: MiniZooKeeperCluster.java From hbase with Apache License 2.0

6 votes

/**
 * Kill one back up ZK servers.
 *
 * @throws IOException if waiting for the shutdown of a server fails
 */
public void killOneBackupZooKeeperServer() throws IOException, InterruptedException {
  if (!started || activeZKServerIndex < 0 || standaloneServerFactoryList.size() <= 1) {
    return ;
  }

  int backupZKServerIndex = activeZKServerIndex+1;
  // Shutdown the current active one
  NIOServerCnxnFactory standaloneServerFactory =
    standaloneServerFactoryList.get(backupZKServerIndex);
  int clientPort = clientPortList.get(backupZKServerIndex);

  standaloneServerFactory.shutdown();
  if (!waitForServerDown(clientPort, connectionTimeout)) {
    throw new IOException("Waiting for shutdown of standalone server");
  }

  zooKeeperServers.get(backupZKServerIndex).getZKDatabase().close();

  // remove this backup zk server
  standaloneServerFactoryList.remove(backupZKServerIndex);
  clientPortList.remove(backupZKServerIndex);
  zooKeeperServers.remove(backupZKServerIndex);
  LOG.info("Kill one backup ZK servers in the cluster on client port: {}", clientPort);
}

Example 4

Source File: MiniZooKeeperCluster.java From dremio-oss with Apache License 2.0

5 votes

/**
 * @return clientPort return clientPort if there is another ZK backup can run
 *         when killing the current active; return -1, if there is no backups.
 * @throws IOException
 * @throws InterruptedException
 */
public int killCurrentActiveZooKeeperServer() throws IOException,
  InterruptedException {
  if (!started || activeZKServerIndex < 0) {
    return -1;
  }

  // Shutdown the current active one
  NIOServerCnxnFactory standaloneServerFactory =
    standaloneServerFactoryList.get(activeZKServerIndex);
  int clientPort = clientPortList.get(activeZKServerIndex);

  standaloneServerFactory.shutdown();
  if (!waitForServerDown(clientPort, CONNECTION_TIMEOUT)) {
    throw new IOException("Waiting for shutdown of standalone server");
  }

  // remove the current active zk server
  standaloneServerFactoryList.remove(activeZKServerIndex);
  clientPortList.remove(activeZKServerIndex);
  zooKeeperServers.remove(activeZKServerIndex);
  logger.info("Kill the current active ZK servers in the cluster " +
    "on client port: " + clientPort);

  if (standaloneServerFactoryList.size() == 0) {
    // there is no backup servers;
    return -1;
  }
  clientPort = clientPortList.get(activeZKServerIndex);
  logger.info("Activate a backup zk server in the cluster " +
    "on client port: " + clientPort);
  // return the next back zk server's port
  return clientPort;
}

Example 5

Source File: LocalBookkeeperEnsemble.java From pulsar with Apache License 2.0

5 votes

private void runZookeeper(int maxCC) throws IOException {
    // create a ZooKeeper server(dataDir, dataLogDir, port)
    LOG.info("Starting ZK server");
    // ServerStats.registerAsConcrete();
    // ClientBase.setupTestEnv();

    File zkDataDir = isNotBlank(zkDataDirName) ? Files.createDirectories(Paths.get(zkDataDirName)).toFile()
            : Files.createTempDirectory("zktest").toFile();

    if (this.clearOldData) {
        cleanDirectory(zkDataDir);
    }

    try {
        // Allow all commands on ZK control port
        System.setProperty("zookeeper.4lw.commands.whitelist", "*");
        zks = new ZooKeeperServer(zkDataDir, zkDataDir, ZooKeeperServer.DEFAULT_TICK_TIME);

        serverFactory = new NIOServerCnxnFactory();
        serverFactory.configure(new InetSocketAddress(zkPort), maxCC);
        serverFactory.startup(zks);
    } catch (Exception e) {
        LOG.error("Exception while instantiating ZooKeeper", e);

        if (serverFactory != null) {
            serverFactory.shutdown();
        }
        throw new IOException(e);
    }

    this.zkPort = serverFactory.getLocalPort();
    this.HOSTPORT = "127.0.0.1:" + zkPort;

    boolean b = waitForServerUp(HOSTPORT, CONNECTION_TIMEOUT);

    LOG.info("ZooKeeper server up: {}", b);
    LOG.debug("Local ZK started (port: {}, data_directory: {})", zkPort, zkDataDir.getAbsolutePath());
}

Example 6