Newts is a big data time-series service and schema designed for Apache Cassandra/ScyllaDB. It enables horizontal scaling capabilities for your time series storage and is an alternative to JRobin and RRDtool.
Support covers how to set up OpenNMS to use Newts and OpenNMS configuration to the point of the Cassandra API. While general knowledge and best effort diagnostics can be suggested, directly supporting Cassandra or ScyllaDB clusters is not included.
For example, designing the cluster, diagnosing cluster failures or scalability, or fixing bugs in the cluster software is not covered.