kafka用java编写消费者消费不到数据

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于 2018-12-07 21:12:05 发布

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文章标签： kafka java 消费不到数据消费者解决方法

本文链接：https://blog.youkuaiyun.com/weixin_43679675/article/details/84887178

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博客内容描述了在使用Java编写Kafka消费者时遇到的`UnresolvedAddressException`异常，详细日志显示了尝试连接到hadoop01:9092失败。解决方案是修改Kafka的`server.properties`配置文件，将Zookeeper连接地址从主机名改为每个机器的IP地址和端口号。通过这个改动，问题得到了解决。建议在配置文件中使用IP地址以避免类似识别问题。

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这是报的异常：
Caused by: java.nio.channels.UnresolvedAddressException
at sun.nio.ch.Net.checkAddress(Net.java:101)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622)
at org.apache.kafka.common.network.Selector.connect(Selector.java:192)
… 15 more
2018-12-06 21:12:41,645 DEBUG org.apache.kafka.clients.NetworkClient.maybeUpdate() - Initialize connection to node hadoop01:9092 (id: 1 rack: null) for sending metadata request
2018-12-06 21:12:41,645 DEBUG org.apache.kafka.clients.NetworkClient.initiateConnect() - Initiating connection to node hadoop01:9092 (id: 1 rack: null)
2018-12-06 21:12:41,645 DEBUG org.apache.kafka.clients.NetworkClient.initiateConnect() - Error connecting to node hadoop01:9092 (id: 1 rack: null)
java.io.IOException: Can’t resolve address: hadoop01:9092
at org.apache.kafka.common.network.Selector.connect(Selector.java:195)
at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:764)
at org.apache.kafka.clients.NetworkClient.access