/** {@inheritDoc} */
    @Override
    public void sendMessage(GridNode node, GridTcpCommunicationMessageAdapter msg)
        throws GridSpiException {
      checkSyncFlags((GridIoMessage) msg);

      super.sendMessage(node, msg);
    }
  /** {@inheritDoc} */
  @Override
  protected GridConfiguration getConfiguration(String gridName) throws Exception {
    GridConfiguration cfg = super.getConfiguration(gridName);

    GridTcpDiscoverySpi discoSpi = new GridTcpDiscoverySpi();
    discoSpi.setIpFinder(IP_FINDER);

    cfg.setDiscoverySpi(discoSpi);

    GridGgfsConfiguration ggfsCfg = new GridGgfsConfiguration();

    ggfsCfg.setDataCacheName("partitioned");
    ggfsCfg.setMetaCacheName("replicated");
    ggfsCfg.setName("ggfs");
    ggfsCfg.setManagementPort(GridGgfsConfiguration.DFLT_MGMT_PORT + cnt);

    ggfsCfg.setIpcEndpointConfiguration(
        new HashMap<String, String>() {
          {
            put("type", "shmem");
            put("port", String.valueOf(GridIpcSharedMemoryServerEndpoint.DFLT_IPC_PORT + cnt));
          }
        });

    ggfsCfg.setBlockSize(
        512 * 1024); // Together with group blocks mapper will yield 64M per node groups.

    cfg.setGgfsConfiguration(ggfsCfg);

    cfg.setCacheConfiguration(cacheConfiguration());

    cfg.setIncludeEventTypes(EVT_TASK_FAILED, EVT_TASK_FINISHED, EVT_JOB_MAPPED);

    GridTcpCommunicationSpi commSpi = new GridTcpCommunicationSpi();

    commSpi.setSharedMemoryPort(-1);

    cfg.setCommunicationSpi(commSpi);

    cnt++;

    return cfg;
  }
    /**
     * Send message optionally either blocking it or throwing an exception if it is of {@link
     * GridJobExecuteResponse} type.
     *
     * @param node Destination node.
     * @param msg Message to be sent.
     * @throws GridSpiException If failed.
     */
    private void sendMessage0(GridNode node, GridTcpCommunicationMessageAdapter msg)
        throws GridSpiException {
      if (msg instanceof GridIoMessage) {
        GridIoMessage msg0 = (GridIoMessage) msg;

        if (msg0.message() instanceof GridJobExecuteResponse) {
          respLatch.countDown();

          if (wait) {
            try {
              U.await(waitLatch);
            } catch (GridInterruptedException ignore) {
              // No-op.
            }
          }
        }
      }

      if (!block) super.sendMessage(node, msg);
    }