Apache Druid

Hey all, I have created a *Grafana* dashboard for monitoring Apache Druid using `prometheus exporter`
As I know that there is no such dashboard that uses Prometheus Exporter I thought I would share it <https://github.com/spliakos/apache_druid_misc/blob/main/Druid%20_%20Druid%20Overview-NEWEST.json|here>.
Any comments, additions, questions are very welcome!

I see there is two JVM sections. Not able to understand more 


And we can also add service related metrics that shows whether the service is up or not 