我有两个卡夫卡集群。我需要使用kafka-spring在它们之间实现一种同步。
[cluster A, topic A] <-- [spring app] --> [cluster B, topic B]
我创建了一个anorated为@Transactional的监听器,它使用kafkaTemplate发布消息。当连接到两个集群时,这非常有效。当与目标集群的连接丢失时 - 似乎侦听器仍然确认新消息,但它们不会被发布。我在监听器上尝试了手动ack,禁用自动提交等,但似乎它们不起作用,因为我认为它们应该......当连接重新联机时,消息永远不会被传递。需要帮助。
@KafkaListener(topics = "A", containerFactory = "syncLocalListenerFactory")
public void consumeLocal(@Header(KafkaHeaders.RECEIVED_MESSAGE_KEY) String key, @Payload SyncEvent message, Acknowledgment ack) {
kafkaSyncRemoteTemplate.send("B", key, message);
ack.acknowledge();
}
我得到日志:
2019-04-26 12:11:40.808 WARN 21304 --- [ad | producer-1] org.apache.kafka.clients.NetworkClient : [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available.
2019-04-26 12:11:40.828 WARN 21304 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient : [Consumer clientId=consumer-2, groupId=app-sync] Connection to node 1001 could not be established. Broker may not be available.
2019-04-26 12:11:47.829 ERROR 21304 --- [ad | producer-1] o.s.k.support.LoggingProducerListener : Exception thrown when sending a message with key='...' and payload='...' to topic B:
org.apache.kafka.common.errors.TimeoutException: Expiring 2 record(s) for sync-2: 30002 ms has passed since batch creation plus linger time
2019-04-26 12:11:47.829 ERROR 21304 --- [ad | producer-1] o.s.k.support.LoggingProducerListener : Exception thrown when sending a message with key='...' and payload='...' to topic B:
org.apache.kafka.common.errors.TimeoutException: Expiring 2 record(s) for sync-2: 30002 ms has passed since batch creation plus linger time
---编辑---
这里的kafkaProperties是从application.properties文件读取的默认kafka-spring属性,但在这种情况下它们都是默认的
@Bean
public ConsumerFactory<String, SyncEvent> syncLocalConsumerFactory() {
Map<String, Object> config = kafkaProperties.buildConsumerProperties();
config.put(ConsumerConfig.GROUP_ID_CONFIG, kafkaProperties.getStreams().getApplicationId() + "-sync");
config.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
config.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, JsonDeserializer.class);
config.put(JsonDeserializer.VALUE_DEFAULT_TYPE, SyncEvent.class);
config.put(JsonDeserializer.TRUSTED_PACKAGES, "app.structures");
config.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, false);
DefaultKafkaConsumerFactory<String, SyncEvent> cf = new DefaultKafkaConsumerFactory<>(config);
cf.setValueDeserializer(new JsonDeserializer<>(SyncEvent.class, objectMapper));
return cf;
}
@Bean(name = "syncLocalListenerFactory")
public ConcurrentKafkaListenerContainerFactory<String, SyncEvent> kafkaSyncLocalListenerContainerFactory() {
ConcurrentKafkaListenerContainerFactory<String, SyncEvent> factory = new ConcurrentKafkaListenerContainerFactory();
factory.setConsumerFactory(syncLocalConsumerFactory());
factory.getContainerProperties().setAckMode(ContainerProperties.AckMode.MANUAL_IMMEDIATE);
factory.getContainerProperties().setAckOnError(false);
factory.setErrorHandler(new SeekToCurrentErrorHandler(0));
return factory;
}
This website描述了如何设置错误处理程序(使用SeekToCurrentErrorHandler
),它可能会帮助你。来自Spring documentation:
SeekToCurrentErrorHandler:一个错误处理程序,它寻找剩余记录中每个主题的当前偏移量。用于在消息失败后重绕分区,以便可以重播它。