我会很感激你在这方面的帮助。
我正在构建一个 Apache Kafka 消费者来订阅另一个已经在运行的 Kafka。现在，我的问题是，当我的生产者将消息推送到服务器时......我的消费者没有收到它们......并且我在打印的日志中得到以下信息::
13/08/30 18:00:58 INFO producer.SyncProducer: Connected to xx.xx.xx.xx:6667:false for producing
13/08/30 18:00:58 INFO producer.SyncProducer: Disconnecting from xx.xx.xx.xx:6667:false
13/08/30 18:00:58 INFO consumer.ConsumerFetcherManager: [ConsumerFetcherManager- 1377910855898] Stopping leader finder thread
13/08/30 18:00:58 INFO consumer.ConsumerFetcherManager: [ConsumerFetcherManager- 1377910855898] Stopping all fetchers
13/08/30 18:00:58 INFO consumer.ConsumerFetcherManager: [ConsumerFetcherManager- 1377910855898] All connections stopped
我不确定我是否在这里遗漏了任何重要的配置......但是，我可以看到一些来自我的服务器使用 WireShark 的消息，但它们没有被我的消费者消费......
我的代码是示例消费者示例的精确副本： https ://cwiki.apache.org/confluence/display/KAFKA/Consumer+Group+Example
更新：
[2013-09-03 00:57:30,146] INFO Starting ZkClient event thread.
(org.I0Itec.zkclient.ZkEventThread)
[2013-09-03 00:57:30,146] INFO Opening socket connection to server /xx.xx.xx.xx:2181 (org.apache.zookeeper.ClientCnxn)
[2013-09-03 00:57:30,235] INFO Connected to xx.xx.xx:6667 for producing (kafka.producer.SyncProducer)
[2013-09-03 00:57:30,299] INFO Socket connection established to 10.224.62.212/10.224.62.212:2181, initiating session (org.apache.zookeeper.ClientCnxn)
[2013-09-03 00:57:30,399] INFO Disconnecting from xx.xx.xx.net:6667 (kafka.producer.SyncProducer)
[2013-09-03 00:57:30,400] INFO [ConsumerFetcherManager-1378195030845] Stopping leader finder thread (kafka.consumer.ConsumerFetcherManager)
[2013-09-03 00:57:30,400] INFO [ConsumerFetcherManager-1378195030845] Stopping all fetchers (kafka.consumer.ConsumerFetcherManager)
[2013-09-03 00:57:30,400] INFO [ConsumerFetcherManager-1378195030845] All connections stopped (kafka.consumer.ConsumerFetcherManager)
[2013-09-03 00:57:30,400] INFO [console-consumer-49997_xx.xx.xx-1378195030443-cce6fc51], Cleared all relevant queues for this fetcher (kafka.consumer.ZookeeperConsumerConnector)
[2013-09-03 00:57:30,400] INFO [console-consumer-49997_xx.xx.xx.-1378195030443-cce6fc51], Cleared the data chunks in all the consumer message iterators (kafka.consumer.ZookeeperConsumerConnector)
[2013-09-03 00:57:30,400] INFO [console-consumer-49997_xx.xx.xx.xx-1378195030443-cce6fc51], Committing all offsets after clearing the fetcher queues (kafka.consumer.ZookeeperConsumerConnector)
[2013-09-03 00:57:30,401] ERROR [console-consumer-49997_xx.xx.xx.xx-1378195030443-cce6fc51], zk client is null. Cannot commit offsets (kafka.consumer.ZookeeperConsumerConnector)
[2013-09-03 00:57:30,401] INFO [console-consumer-49997_xx.xx.xx.xx-1378195030443-cce6fc51], Releasing partition ownership (kafka.consumer.ZookeeperConsumerConnector)
[2013-09-03 00:57:30,401] INFO [console-consumer-49997_xx.xx.xx.xx-1378195030443-cce6fc51], exception during rebalance (kafka.consumer.ZookeeperConsumerConnector)
java.util.NoSuchElementException: None.get
at scala.None$.get(Option.scala:185)
at scala.None$.get(Option.scala:183)
at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anonfun$kafka$consumer$ZookeeperConsumerConnector$ZKRebalancerListener$$rebalance$2.apply(ZookeeperConsumerConnector.scala:434)
at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anonfun$kafka$consumer$ZookeeperConsumerConnector$ZKRebalancerListener$$rebalance$2.apply(ZookeeperConsumerConnector.scala:429)
at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:80)
at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:80)
at scala.collection.Iterator$class.foreach(Iterator.scala:631)
at scala.collection.mutable.HashTable$$anon$1.foreach(HashTable.scala:161)
at scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:194)
at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:39)
at scala.collection.mutable.HashMap.foreach(HashMap.scala:80)
at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.kafka$consumer$ZookeeperConsumerConnector$ZKRebalancerListener$$rebalance(ZookeeperConsumerConnector.scala:429)
at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anonfun$syncedRebalance$1.apply$mcVI$sp(ZookeeperConsumerConnector.scala:374)
at scala.collection.immutable.Range$ByOne$class.foreach$mVc$sp(Range.scala:282)
at scala.collection.immutable.Range$$anon$2.foreach$mVc$sp(Range.scala:265)
at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.syncedRebalance(ZookeeperConsumerConnector.scala:369)
at kafka.consumer.ZookeeperConsumerConnector.kafka$consumer$ZookeeperConsumerConnector$$reinitializeConsumer(ZookeeperConsumerConnector.scala:681)
at kafka.consumer.ZookeeperConsumerConnector$WildcardStreamsHandler.<init>(ZookeeperConsumerConnector.scala:715)
at kafka.consumer.ZookeeperConsumerConnector.createMessageStreamsByFilter(ZookeeperConsumerConnector.scala:140)
at kafka.consumer.ConsoleConsumer$.main(ConsoleConsumer.scala:196)
at kafka.consumer.ConsoleConsumer.main(ConsoleConsumer.scala)