Forcing a full ZK cluster state update creates a lot of unnecessary work and load at scale. We need to deprecate and remove existing callers.
- The one at the start of ClusterStateUpdater thread is fine, it's a one-time thing.
- The one in OverseerCollectionMessageHandler is getting removed in
- The rest of them can be replaced with a version that only updates a single collection; not everything!
Patch will be forthcoming.