4. When are clusters brought up and shut down?

Qubole’s clusters are ephemeral, though of course the data persists in your Cloud storage.

When you submit a query that requires a cluster, QDS brings up the cluster automatically if a suitable one is not already running, and uses it for subsequent queries, if any. Once the cluster has been idle for some time, QDS brings it down.

You can also bring up and shut down a cluster manually.