Major Description
In a Kafka Streams application, we observed the following log from the producer:
2019-04-17T01:58:25.898Z 17466081 [kafka-producer-network-thread | client-id-enrichment-gcoint-StreamThread-7-0_10-producer] ERROR org.apache.kafka.clients.producer.internals.Sender - [Producer clientId=client-id-enrichment-gcoint-StreamThread-7-0_10-producer, transactionalId=application-id-enrichment-gcoint-0_10] Uncaught error in kafka producer I/O thread:
2019-04-17T01:58:25.898Z java.lang.IllegalStateException: Attempt to send a request to node 1 which is not ready.
2019-04-17T01:58:25.898Z at org.apache.kafka.clients.NetworkClient.doSend(NetworkClient.java:430)
2019-04-17T01:58:25.898Z at org.apache.kafka.clients.NetworkClient.send(NetworkClient.java:411)
2019-04-17T01:58:25.898Z at org.apache.kafka.clients.producer.internals.Sender.maybeSendTransactionalRequest(Sender.java:362)
2019-04-17T01:58:25.898Z at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:214)
2019-04-17T01:58:25.898Z at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:163)
2019-04-17T01:58:25.898Z at java.lang.Thread.run(Thread.java:748)
Later, Kafka Streams (running with EOS enabled) shuts down with a `TimeoutException` that occurs during rebalance. It seem that the above error results in this `TimeoutException`. However, and `IllegalStateException` seem to indicate a bug in the producer.