Might be worth looking into dalmatiner.io (DalmatinerDB) as an alternative to this. It's also built on riak_core to manage cluster membership and the top-level framework for dealing with routing and rebalancing.

Waited for a long time for Riak TS to come out. Tried KairosDB & Cyanite, but the operational overhead of Cassandra wasn't something I wanted to buy into for such a narrow use case (infrastructure metrics store), and then suddenly out of nowhere DalmatinerDB was released. The code is clean, the architecture is solid, and the ops story is simple.

I don't have any affiliation of any kind with the Dataloop folks. I am however a happy end-user. We do currently use Riak KV due to its CRDT support though.