I would like to monitor how far behind our consumer groups are using wall-clock time in addition to the normal integer offset lag. This way services that have tight latency SLAs can alert when a consumer falls behind by N minutes.
Is there a way to do this by querying the cluster/brokers? It's easy to get the highwater offset time, and I can fetch the consumer offset as an integer, but I can't figure out how to derive the consumer offset time. It seems there is no way to directly fetch the offset as a time nor to convert the integer offset to a time. Am I missing something, or is this truly impossible from the broker-side? We could do this by instrumenting all our consumers, but given how our teams are structured, it'd be much simpler to monitor this by querying the cluster. For example, if someone spins up a new consumer, we immediately have this metric for their service. Cheers, Jeff -- *Jeff Widman* jeffwidman.com <http://www.jeffwidman.com/> | 740-WIDMAN-J (943-6265) <><
