kafka topicPartitions问题

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当我实现三个消费者去同时消费一个Topic(默认没有分区)消息时,三个消费者同时消费到了同样的消息

现象如下:

2019-06-11 15:30:02.516 [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] INFO  com.example.kafka.consumer.TestB - ==[cousumerC]==1560238202513====sendTest3===3
2019-06-11 15:30:02.517 [org.springframework.kafka.KafkaListenerEndpointContainer#1-0-C-1] INFO  com.example.kafka.consumer.TestB - ==[cousumerA]==1560238202513====sendTest3===3
2019-06-11 15:30:02.518 [org.springframework.kafka.KafkaListenerEndpointContainer#2-0-C-1] INFO  com.example.kafka.consumer.TestB - ==[cousumerB]==1560238202513====sendTest3===3
2019-06-11 15:30:04.518 [org.springframework.kafka.KafkaListenerEndpointContainer#1-0-C-1] INFO  com.example.kafka.consumer.TestB - ==[cousumerA]==1560238204513====sendTest3===4
2019-06-11 15:30:04.518 [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] INFO  com.example.kafka.consumer.TestB - ==[cousumerC]==1560238204513====sendTest3===4
2019-06-11 15:30:04.518 [org.springframework.kafka.KafkaListenerEndpointContainer#2-0-C-1] INFO  com.example.kafka.consumer.TestB - ==[cousumerB]==1560238204513====sendTest3===4

消费者

@KafkaListener(groupId = "test2",topicPartitions = { 
@TopicPartition(topic = "hzl.test.aaa",partitionOffsets = @PartitionOffset(partition = "0",initialOffset = "-1"))})
public void cousumerA(String msg) { 

logger.info("==[cousumerA]==" + msg);
}
@KafkaListener(groupId = "test2",topicPartitions = { 
@TopicPartition(topic = "hzl.test.aaa",partitionOffsets = @PartitionOffset(partition = "0",initialOffset = "-1"))})
public void cousumerB(String msg) { 

logger.info("==[cousumerB]==" + msg);
}
@KafkaListener(groupId = "test2",topicPartitions = { 
@TopicPartition(topic = "hzl.test.aaa",partitionOffsets = @PartitionOffset(partition = "0",initialOffset = "-1"))})
public void cousumerC(String msg) { 

logger.info("==[cousumerC]==" + msg);
}

生产者

@Autowired
KafkaTemplate kafkaTemplate;
int i =0;
@Scheduled(fixedRate = 2000)
public void sendTest3() { 

kafkaTemplate.send("hzl.test.aaa", System.currentTimeMillis() + "====sendTest3===" + i++);
}

如果采用如下方式,则只会被消费一次

    @KafkaListener(topics =  "hzl.test.aaa",groupId = "test2",)
public void cousumerD(String msg) { 

logger.info("==[cousumerD]==" + msg);
}
@KafkaListener(topics =  "hzl.test.aaa",groupId = "test2",)
public void cousumerE(String msg) { 

logger.info("==[cousumerE]==" + msg);
}
@KafkaListener(topics =  "hzl.test.aaa",groupId = "test2",)
public void cousumerF(String msg) { 

logger.info("==[cousumerF]==" + msg);
}

另外,如何监听topic中最新的消息

auto-offset-reset: latest 

这样设置好像也是从消费组中提交后的offset开始消费的,并不是最新的一条消息?