/**
   * @param nodeId Sender.
   * @param res Result.
   */
  void onResult(UUID nodeId, GridNearTxFinishResponse<K, V> res) {
    if (!isDone())
      for (GridFuture<GridCacheTx> fut : futures()) {
        if (isMini(fut)) {
          MiniFuture f = (MiniFuture) fut;

          if (f.futureId().equals(res.miniId())) {
            assert f.node().id().equals(nodeId);

            f.onResult(res);
          }
        }
      }
  }
  /** {@inheritDoc} */
  @Override
  public boolean onNodeLeft(UUID nodeId) {
    for (GridFuture<?> fut : futures())
      if (isMini(fut)) {
        MiniFuture f = (MiniFuture) fut;

        if (f.node().id().equals(nodeId)) {
          // Remove previous mapping.
          mappings.remove(nodeId);

          f.onResult(new GridTopologyException("Remote node left grid (will fail): " + nodeId));

          return true;
        }
      }

    return false;
  }