spout.setCycle(true);
TridentTopology topology = new TridentTopology();
Stream stream = topology.newStream("spout1", spout);
TridentKafkaStateFactory stateFactory = new TridentKafkaStateFactory()
.withKafkaTopicSelector(new DefaultTopicSelector("test"))
.withTridentTupleToKafkaMapper(new FieldNameBasedTupleToKafkaMapper("word", "count"));
stream.partitionPersist(stateFactory, fields, new TridentKafkaUpdater(), new Fields());
return topology.build();