we are using 2 nodes Kafka servers on the cluster to handle the load. both of them are running. I recently noticed there is an error on the log.
Environment:
* ubuntu 14.04 and ubuntu 18.04,
* both running the same version of Kafka-server
tail -f /opt/kafka/logs/server.log
[2020-01-27 21:40:09,292] INFO Closing socket connection to /172.19.4.42. (kafka.network.Processor)
[2020-01-27 21:40:09,293] ERROR Closing socket for /172.19.4.42 because of error (kafka.network.Processor)
kafka.common.KafkaException: Wrong request type 18
at kafka.api.RequestKeys$.deserializerForKey(RequestKeys.scala:64)
at kafka.network.RequestChannel$Request.(RequestChannel.scala:50)
at kafka.network.Processor.read(SocketServer.scala:450)
at kafka.network.Processor.run(SocketServer.scala:340)
at java.lang.Thread.run(Thread.java:748)
[2020-01-27 21:40:09,395] ERROR Closing socket for /172.19.4.42 because of error (kafka.network.Processor)
kafka.common.KafkaException: Wrong request type 16
at kafka.api.RequestKeys$.deserializerForKey(RequestKeys.scala:64)
at kafka.network.RequestChannel$Request.(RequestChannel.scala:50)
at kafka.network.Processor.read(SocketServer.scala:450)
at kafka.network.Processor.run(SocketServer.scala:340)
at java.lang.Thread.run(Thread.java:748)