I've seen these before but we have recently moved to the 0.9 consumer code for one of our big Kafka use cases and now we see about 1 million EOF exceptions in a 5 minute period. This can't be very good for performance. My guess is that these exceptions are expected since it uses DataInputStream to parse. Seems like doing explicit range checking would be a better way to go. Here is a snapshot taken from Java Mission Control - http://imgur.com/a/DmCve
Thanks, Rajiv
