コード例 #1
0
  /**
   * Starts communication.
   *
   * @throws IgniteCheckedException If failed.
   */
  public void start() throws IgniteCheckedException {
    try {
      locHost = U.getLocalHost();
    } catch (IOException e) {
      throw new IgniteCheckedException("Failed to initialize local address.", e);
    }

    try {
      shmemSrv = resetShmemServer();
    } catch (IgniteCheckedException e) {
      U.warn(log, "Failed to start shared memory communication server.", e);
    }

    try {
      // This method potentially resets local port to the value
      // local node was bound to.
      nioSrvr = resetNioServer();
    } catch (IgniteCheckedException e) {
      throw new IgniteCheckedException("Failed to initialize TCP server: " + locHost, e);
    }

    locProcDesc.address(locHost.getHostAddress());
    locProcDesc.sharedMemoryPort(boundTcpShmemPort);
    locProcDesc.tcpPort(boundTcpPort);

    locIdMsg = new ProcessHandshakeMessage(locProcDesc);

    if (shmemSrv != null) {
      shmemAcceptWorker = new ShmemAcceptWorker(shmemSrv);

      new IgniteThread(shmemAcceptWorker).start();
    }

    nioSrvr.start();
  }
コード例 #2
0
  /**
   * Establish TCP connection to remote hadoop process and returns client.
   *
   * @param desc Process descriptor.
   * @return Client.
   * @throws IgniteCheckedException If failed.
   */
  protected HadoopCommunicationClient createTcpClient(HadoopProcessDescriptor desc)
      throws IgniteCheckedException {
    String addr = desc.address();

    int port = desc.tcpPort();

    if (log.isDebugEnabled())
      log.debug(
          "Trying to connect to remote process [locProcDesc="
              + locProcDesc
              + ", desc="
              + desc
              + ']');

    boolean conn = false;
    HadoopTcpNioCommunicationClient client = null;
    IgniteCheckedException errs = null;

    int connectAttempts = 1;

    long connTimeout0 = connTimeout;

    int attempt = 1;

    while (!conn) { // Reconnection on handshake timeout.
      try {
        SocketChannel ch = SocketChannel.open();

        ch.configureBlocking(true);

        ch.socket().setTcpNoDelay(tcpNoDelay);
        ch.socket().setKeepAlive(true);

        if (sockRcvBuf > 0) ch.socket().setReceiveBufferSize(sockRcvBuf);

        if (sockSndBuf > 0) ch.socket().setSendBufferSize(sockSndBuf);

        ch.socket().connect(new InetSocketAddress(addr, port), (int) connTimeout);

        HandshakeFinish fin = new HandshakeFinish();

        GridNioSession ses = nioSrvr.createSession(ch, F.asMap(HANDSHAKE_FINISH_META, fin)).get();

        client = new HadoopTcpNioCommunicationClient(ses);

        if (log.isDebugEnabled()) log.debug("Waiting for handshake finish for client: " + client);

        fin.await(connTimeout0);

        conn = true;
      } catch (HadoopHandshakeTimeoutException e) {
        if (client != null) {
          client.forceClose();

          client = null;
        }

        if (log.isDebugEnabled())
          log.debug(
              "Handshake timedout (will retry with increased timeout) [timeout="
                  + connTimeout0
                  + ", desc="
                  + desc
                  + ", port="
                  + port
                  + ", err="
                  + e
                  + ']');

        if (attempt == reconCnt || connTimeout0 > maxConnTimeout) {
          if (log.isDebugEnabled())
            log.debug(
                "Handshake timed out (will stop attempts to perform the handshake) "
                    + "[timeout="
                    + connTimeout0
                    + ", maxConnTimeout="
                    + maxConnTimeout
                    + ", attempt="
                    + attempt
                    + ", reconCnt="
                    + reconCnt
                    + ", err="
                    + e.getMessage()
                    + ", addr="
                    + addr
                    + ']');

          if (errs == null)
            errs =
                new IgniteCheckedException(
                    "Failed to connect to remote Hadoop process "
                        + "(is process still running?) [desc="
                        + desc
                        + ", addrs="
                        + addr
                        + ']');

          errs.addSuppressed(e);

          break;
        } else {
          attempt++;

          connTimeout0 *= 2;

          // Continue loop.
        }
      } catch (Exception e) {
        if (client != null) {
          client.forceClose();

          client = null;
        }

        if (log.isDebugEnabled())
          log.debug("Client creation failed [addr=" + addr + ", port=" + port + ", err=" + e + ']');

        if (X.hasCause(e, SocketTimeoutException.class))
          LT.warn(
              log,
              null,
              "Connect timed out (consider increasing 'connTimeout' "
                  + "configuration property) [addr="
                  + addr
                  + ", port="
                  + port
                  + ']');

        if (errs == null)
          errs =
              new IgniteCheckedException(
                  "Failed to connect to remote Hadoop process (is process still running?) "
                      + "[desc="
                      + desc
                      + ", addrs="
                      + addr
                      + ']');

        errs.addSuppressed(e);

        // Reconnect for the second time, if connection is not established.
        if (connectAttempts < 2
            && (e instanceof ConnectException || X.hasCause(e, ConnectException.class))) {
          connectAttempts++;

          continue;
        }

        break;
      }
    }

    if (client == null) {
      assert errs != null;

      if (X.hasCause(errs, ConnectException.class))
        LT.warn(
            log,
            null,
            "Failed to connect to a remote Hadoop process (is process still running?). "
                + "Make sure operating system firewall is disabled on local and remote host) "
                + "[addrs="
                + addr
                + ", port="
                + port
                + ']');

      throw errs;
    }

    if (log.isDebugEnabled()) log.debug("Created client: " + client);

    return client;
  }