long end = System.nanoTime();
long millis = (end - start) / 1000000;
_fetchAPILatencyMax.update(millis);
_fetchAPILatencyMean.update(millis);
_fetchAPICallCount.incr();
_fetchAPIMessageCount.incrBy(msgs.underlying().size());
int numMessages = msgs.underlying().size();
if(numMessages>0) {
LOG.info("Fetched " + numMessages + " messages from Kafka: " + _consumer.host() + ":" + _partition.partition);
}