```
public interface RackChangeNotifier
```
Notifier used by the RackawareEnsemblePlacementPolicy to get notified if a rack changes for a bookie.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`registerRackChangeListener(ITopologyAwareEnsemblePlacementPolicy<BookieNode> rackawarePolicy)`	Register a listener for the rack-aware placement policy.

Interface RackChangeNotifier