/** {@inheritDoc} */
  @Override
  public void start(BenchmarkConfiguration cfg) throws Exception {
    IgniteBenchmarkArguments args = new IgniteBenchmarkArguments();

    BenchmarkUtils.jcommander(cfg.commandLineArguments(), args, "<ignite-node>");

    IgniteConfiguration c = loadConfiguration(args.configuration());

    assert c != null;

    // Server node doesn't contains cache configuration. Driver will create dynamic cache.
    c.setCacheConfiguration();

    TransactionConfiguration tc = c.getTransactionConfiguration();

    tc.setDefaultTxConcurrency(args.txConcurrency());
    tc.setDefaultTxIsolation(args.txIsolation());

    TcpCommunicationSpi commSpi = (TcpCommunicationSpi) c.getCommunicationSpi();

    if (commSpi == null) commSpi = new TcpCommunicationSpi();

    c.setCommunicationSpi(commSpi);

    ignite = Ignition.start(c);
  }
  /** {@inheritDoc} */
  @SuppressWarnings("unchecked")
  @Override
  protected IgniteConfiguration getConfiguration(String gridName) throws Exception {
    IgniteConfiguration c = super.getConfiguration(gridName);

    TransactionConfiguration txCfg = c.getTransactionConfiguration();

    txCfg.setDefaultTxConcurrency(txConcurrency);
    txCfg.setDefaultTxIsolation(txIsolation);
    txCfg.setTxSerializableEnabled(true);

    CacheConfiguration cc = defaultCacheConfiguration();

    cc.setCacheMode(cacheMode());
    cc.setAtomicityMode(TRANSACTIONAL);

    cc.setSwapEnabled(false);

    cc.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);

    cc.setEvictionPolicy(plc);
    cc.setEvictSynchronizedKeyBufferSize(1);

    cc.setEvictSynchronized(true);

    if (testStore != null) {
      cc.setCacheStoreFactory(singletonFactory(testStore));
      cc.setReadThrough(true);
      cc.setWriteThrough(true);
      cc.setLoadPreviousValue(true);
    } else cc.setCacheStoreFactory(null);

    c.setCacheConfiguration(cc);

    TcpDiscoverySpi disco = new TcpDiscoverySpi();

    disco.setIpFinder(ipFinder);

    c.setDiscoverySpi(disco);

    return c;
  }