Most, if not all, commercial newsql distributed databases do range based splitting of the data, with each range managed by a raft group. Raft groups get migrate

Most, if not all, commercial newsql distributed databases do range based splitting of the data, with each range managed by a raft group. Raft groups get migrated between nodes to avoid hot spots, among other scheduling criteria. TiDB does this for sure, I'd be surprised if CockroachDB (and yugabyte and dgraph) doesn't do it.