builder.setBolt("exclaim", new ExclamationBolt(), 3).shuffleGrouping("drpc");
builder.setBolt("return", new ReturnResults(), 3).shuffleGrouping("exclaim");
LocalCluster cluster = new LocalCluster();
Config conf = new Config();
cluster.submitTopology("exclaim", conf, builder.createTopology());
System.out.println(drpc.execute("exclamation", "aaa"));
System.out.println(drpc.execute("exclamation", "bbb"));
}