We at OfferUp use Datadog a lot for metrics and dashboards, and I believe a lot other companies also do.
Flink right now only has a StatsD metrics reporter, and users have to set up Datadog Agent in order to receive metrics from StatsD and transport them to Datadog. We don't like this approach.
We prefer to have a Datadog metrics reporter directly contacting Datadog http endpoint.
I'll take this ticket myself.