I recently attempted to consume messages from a Kafka topic and was greeted with the following error message:
[2016-08-15 17:56:05,025] INFO Closing socket connection to /192.168.34.11. (kafka.network.Processor)
[2016-08-15 17:56:05,050] ERROR Closing socket for /127.0.0.1 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.<init>(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:745)
[2016-08-15 17:56:05,154] ERROR Closing socket for /127.0.0.1 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.<init>(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:745)
[2016-08-15 17:56:10,476] ERROR Closing socket for /127.0.0.1 because of error (kafka.network.Processor)
java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)
at kafka.api.TopicDataSend.writeTo(FetchResponse.scala:123)
at kafka.network.MultiSend.writeTo(Transmission.scala:101)
at kafka.api.FetchResponseSend.writeTo(FetchResponse.scala:231)
at kafka.network.Processor.write(SocketServer.scala:472)
at kafka.network.Processor.run(SocketServer.scala:342)
at java.lang.Thread.run(Thread.java:745)
As you can perhaps tell from the error message, the kafka broker is mapped to localhost - but beyond that, I can't really parse it, and it's been hard to find details on the error message "Wrong request type 18".
Anyone else have this issue?
The error seems to have gone away, but I don't think I made any changes; I'm not sure what happened exactly. Sorry for the useless question.