Hello, I'm interested in exposing metrics from my UDFs. I see FLINK-1501 exposes task manager metrics via a UI; it would be nice to plug into the same MetricRegistry to register my own (ie, gauges). I don't see this exposed via runtime context. This did lead me to discovering the Accumulators API. This looks more oriented to simple counts, which are summed across components of a batch job. In my case, I'd like to expose details of my stream processing vertices so that I can monitor their correctness and health re: runtime decisions. For instance, referring back to my previous thread, I would like to expose the number of filters loaded into my custom RichCoFlatMap so that I can easily monitor this value.
Thanks, Nick
