Now that it has been a bit longer, the spikes I was seeing are gone but the CPU and network in/out on the three brokers that were showing the spikes are still much higher than before the upgrade. Their CPUs have increased from around 1-2% to 12-20%. The network in on the same brokers has gone up from under 2 Mb/sec to 19-33 Mb/sec. The network out has gone up from under 2 Mb/sec to 29-42 Mb/sec. I don't see a corresponding increase in kafka messages in per second or kafka bytes in per second JMX metrics.
Thanks, Rajiv
