> > How would the practical application look like if this was implemented? >
One useful application is to hide partition-level metrics, some of which may only be needed for debugging purposes. > Would monitoring agents switch between the whitelist and blacklist > periodically if they wanted to monitor every metrics? > I'm not sure if switching periodically would be practical. However, I do see cases where one might want to enable a subset of metrics temporarily for debugging, without incurring the need to expose all metrics all the time. I can certainly add some examples regular expressions to the KIP to illustrate this.
