Hi Kafka devs, I'd like to propose KIP-488 as a minor cleanup of some of our metric implementations.
KIP-488: https://cwiki.apache.org/confluence/x/kkAyBw Over time, iterative updates to these metrics has resulted in a pretty confusing little collection of classes, and I've personally been involved in three separate moderately time-consuming iterations of me or someone else trying to work out which metrics are available, and which ones are desired for a given use case. One of these was actually a long-running bug in Kafka Streams' metrics, so not only has this confusion been a time sink, but it has also led to bugs. I'm hoping this change won't be too controversial. Thanks, -John
