suvodeep-pyne commented on code in PR #16823:
URL: https://github.com/apache/pinot/pull/16823#discussion_r2353088183


##########
pinot-broker/src/main/java/org/apache/pinot/broker/broker/helix/BaseBrokerStarter.java:
##########
@@ -129,6 +131,12 @@ public abstract class BaseBrokerStarter implements 
ServiceStartable {
   private volatile boolean _isStarting = false;
   private volatile boolean _isShuttingDown = false;
 
+  // Class dedicated towards handling cluster config change
+  protected final DefaultClusterConfigChangeHandler 
_defaultClusterConfigChangeHandler =
+      new DefaultClusterConfigChangeHandler();
+
+  // Deprecated in favor of using a dedicated 
_defaultClusterConfigChangeHandler to manage config related changes
+  @Deprecated

Review Comment:
   So we're not deprecating the `ClusterChangeHandler ` here. It seems to serve 
a more general use case as you also pointed out. The current proposal is to 
deprecating specifically the `_clusterConfigChangeHandlers` list in favor of 
the `DefaultClusterConfigChangeHandler` instance that can maintain a list of 
registrants within it. Note that both do essentially the same thing and that's 
why I think we can consolidate.



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