There is one fetcher per broker, which is responsible for fetching messages in all consumed topics whose leader is on that broker. We have seen a fetcher being killed by a bug in Kafka. Also, if the broker is slow (e.g. due to I/O contention), the fetch rate could also be slower than expected.
Jun On Tue, Dec 24, 2013 at 12:48 PM, Jason Rosenberg <[EMAIL PROTECTED]> wrote: