Click View Message Body. In the displayed View Message Body dialog box, view the message content, including the topic name, partition, offset, creation time, and message body. NOTE: The console displays messages smaller than 4 KB. To view messages larger than 4 KB, click Download Message....
/opt/kafka/bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic monitoringTopic /opt/kafka/bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic discoveryTopic How to view messages of a topic ...
In the Brokers Metrics area, you can view the JMX metrics of the broker node data traffic, including the average number of incoming messages per second, number of bytes of incoming messages per second, number of bytes of outgoing messages per second, and number of failed requests per second,...
// Send the message to our test topic in Kafka vardr =awaitproducer.ProduceAsync(newTopicPartition(topic:"test", partition:newPartition(0)), message); Console.WriteLine($"Produced message '{dr.Value}' to topic{dr.Topic}, partition{dr.Partition}, offset{dr.Offset}"); } } 消费者 classPr...
* requests to renew its view of the cluster and then sends produce requests to the appropriate nodes. 复制 publicclass Sender implements Runnable {privatestaticfinal Logger log = LoggerFactory.getLogger(Sender.class);//kafka网络通信客户端,主要用于与broker的网络通信private final KafkaClient client;//...
(11)添加成功后,点击“Go to Cluster View”,跳转到Kafka 集群的首页,如图7.6所示: 图7.6 Kafka集群首页 在这里,可以看到当前的Kafka集群中共存在2个Broker,即:broker 0和broker 1;还有3个Topics。 (12)点击Brokers的数字“2”,跳转到Broker的监控页面上。在这里就可以实时监控Kafka集群Broker的相关信息了。如Kafk...
producer=KafkaProducer(bootstrap_servers='localhost:9092',value_serializer=lambdav:json.dumps(v).encode('utf-8'))defproduce_messages():foriinrange(10):message={'number':i}producer.send('my_topic',value=message)time.sleep(1)# 模拟延迟if__name__=="__main__":produce_messages()producer.fl...
保存成功后,点击“Go to cluster view”: 就可以查看到我们添加的这个集群信息,在“Cluster Summary”一栏中显示了该集群的Topic数量和Broker数量: 点击“Topics”的数字就可以进入到Topic的监控界面: Partitions:Topic的Partition数量 Brokers:Topic的Broker数量 ...
sends messages toProducer+send(topic: String, value: String)+close()Consumer+subscribe(topic: String)+poll()+close() 在这个类图中,生产者类和消费者类被分别定义,每个类都有其独特的方法。生产者可以发送消息并关闭连接,而消费者则可以订阅主题、轮询消息并关闭连接。
Topic:一类消息,消息存放的目录即主题,例如page view日志、click日志等都可以以topic的形式存在,Kafka集群能够同时负责多个topic的分发。 Partition:topic物理上的分组,一个topic可以分为多个partition,每个partition是一个有序的队列 Segment:partition物理上由多个segment组成,每个Segment存着message信息 ...