Deletion requires shutting down all the replicas. We need to ensure this is done safely so that they don't come back to life.
Option 1) Gossip and a delete flag -
Problem: What happens if a namespace of the same name is created concurrently with the namespace deletion process.
Option 2) Two-phase commit for atomic deletion.
Problem) Expensive. All nodes must be online and reachable.
Option 3) Root Consensus group for all create and delete operations.
Deletion requires shutting down all the replicas. We need to ensure this is done safely so that they don't come back to life.
Option 1) Gossip and a delete flag - Problem: What happens if a namespace of the same name is created concurrently with the namespace deletion process.
Option 2) Two-phase commit for atomic deletion. Problem) Expensive. All nodes must be online and reachable.
Option 3) Root Consensus group for all create and delete operations.