/** @return Involved nodes. */
  @Override
  public Collection<? extends GridNode> nodes() {
    return F.viewReadOnly(
        futures(),
        new GridClosure<GridFuture<?>, GridNode>() {
          @Nullable
          @Override
          public GridNode apply(GridFuture<?> f) {
            if (isMini(f)) return ((MiniFuture) f).node();

            return cctx.discovery().localNode();
          }
        });
  }
  /**
   * @param cctx Context.
   * @param tx Transaction.
   * @param commit Commit flag.
   */
  public GridNearTxFinishFuture(
      GridCacheContext<K, V> cctx, GridNearTxLocal<K, V> tx, boolean commit) {
    super(cctx.kernalContext(), F.<GridCacheTx>identityReducer(tx));

    this.cctx = cctx;
    this.tx = tx;
    this.commit = commit;

    ignoreInterrupts(true);

    mappings = tx.mappings();

    futId = GridUuid.randomUuid();

    log = U.logger(ctx, logRef, GridNearTxFinishFuture.class);
  }