ClusterChangeHandler (Pinot Broker 0.12.1 API)

All Known Implementing Classes:

BrokerRoutingManager, HelixExternalViewBasedQueryQuotaManager
```
@Public
@Evolving
public interface ClusterChangeHandler
```
Handles cluster changes such as external view changes, instance config changes, live instance changes etc.

Method Summary

Modifier and Type	Method	Description
`void`	`init(org.apache.helix.HelixManager helixManager)`	Initializes the cluster change handler with the given connected Helix manager.
`void`	`processClusterChange(org.apache.helix.HelixConstants.ChangeType changeType)`	Processes the cluster change of the given type (e.g.

- Method Detail
  - init
```
void init(org.apache.helix.HelixManager helixManager)
```
    Initializes the cluster change handler with the given connected Helix manager.
  - processClusterChange
```
void processClusterChange(org.apache.helix.HelixConstants.ChangeType changeType)
```
    Processes the cluster change of the given type (e.g. EXTERNAL_VIEW, INSTANCE_CONFIG, LIVE_INSTANCE).