WARN Session 0x0 for server null, unexpected error, closing socket connection and attempting reconne...

最新推荐文章于 2021-11-21 20:05:35 发布

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最新推荐文章于 2021-11-21 20:05:35 发布 · 1.4k 阅读

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博客文章详细记录了在启动Kafka时遇到的WARN Session 0x0错误，该错误关联到Zookeeper客户端连接异常。作者分析认为这是由于Zookeeper服务器未运行导致，并通过首先启动Zookeeper集群并随后启动Kafka成功解决了问题。

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WARN Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn) java.net.ConnectException: Connection refused

1、启动kafka的脚本程序报如下所示的错误：

 1 [hadoop@slaver1 script_hadoop]$ kafka-start.sh 
 2 start kafkaServer...
 3 [2018-05-22 09:29:08,783] INFO Verifying properties (kafka.utils.VerifiableProperties)
 4 [2018-05-22 09:29:08,942] INFO Property broker.id is overridden to 1 (kafka.utils.VerifiableProperties)
 5 [2018-05-22 09:29:08,943] INFO Property log.cleaner.enable is overridden to false (kafka.utils.VerifiableProperties)
 6 [2018-05-22 09:29:08,945] INFO Property log.dirs is overridden to /tmp/kafka-logs (kafka.utils.VerifiableProperties)
 7 [2018-05-22 09:29:08,946] INFO Property log.retention.check.interval.ms is overridden to 60000 (kafka.utils.VerifiableProperties)
 8 [2018-05-22 09:29:08,946] INFO Property log.retention.hours is overridden to 168 (kafka.utils.VerifiableProperties)
 9 [2018-05-22 09:29:08,947] INFO Property log.segment.bytes is overridden to 536870912 (kafka.utils.VerifiableProperties)
10 [2018-05-22 09:29:08,947] INFO Property num.io.threads is overridden to 8 (kafka.utils.VerifiableProperties)
11 [2018-05-22 09:29:08,949] INFO Property num.network.threads is overridden to 2 (kafka.utils.VerifiableProperties)
12 [2018-05-22 09: