Hello All, I am seeing this issue very frequently when running a high volume of messages through Kafka. It starts off well, and it can go on for minutes that way, but eventually it reaches a point where the connection to Kafka dies, then it reconnects and carries on. This repeats more frequently when I have been sending messages for a while. Basically, the more messages I send, the more I see this. To give you an idea, a separate process is writing about 500k messages to the queue. I see this issue on the consumer side that is receiving those messages, after it has received about 60% of the messages. Here is the stack trace:
10:36:14,238 WARN [kafka.consumer.ConsumerFetcherThread] (ConsumerFetcherThread-test.queue.default_localhost-1403704698110-71aecd8d-0-0) [ConsumerFetcherThread-test.queue.default_localhost-1403704698110-71aecd8d-0-0], Error in fetch Name: FetchRequest; Version: 0; CorrelationId: 1; ClientId: test.queue.default-ConsumerFetcherThread-test.queue_localhost-1403704698110-71aecd8d-0-0; ReplicaId: -1; MaxWait: 100 ms; MinBytes: 1 bytes; RequestInfo: [test.queue.resync,0] -> PartitionFetchInfo(0,1048576),[test.queue,0] -> PartitionFetchInfo(0,1048576): java.nio.channels.ClosedByInterruptException at java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202) [rt.jar:1.7.0_25] at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:650) [rt.jar:1.7.0_25] at kafka.network.BlockingChannel.connect(BlockingChannel.scala:57) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer.connect(SimpleConsumer.scala:43) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer.reconnect(SimpleConsumer.scala:56) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer.liftedTree1$1(SimpleConsumer.scala:77) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer.kafka$consumer$SimpleConsumer$$sendRequest(SimpleConsumer.scala:69) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(SimpleConsumer.scala:108) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply(SimpleConsumer.scala:108) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply(SimpleConsumer.scala:108) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply$mcV$sp(SimpleConsumer.scala:107) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply(SimpleConsumer.scala:107) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply(SimpleConsumer.scala:107) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.consumer.SimpleConsumer.fetch(SimpleConsumer.scala:106) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:96) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:88) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:51) [kafka_2.9.2-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT] Since it starts off working as it should, and only runs into this after some time, I am inclined to believe that this maybe a memory/GC issue? Not quite sure. I hope I explained it properly. I am having trouble describing it. Thanks
