private synchronized void delete(String deletedPath) {
      // Sample path of deleted node: /DataNodeConfigs/lor1-app55891.prod.linkedin.com_15088.
      String instanceName = getInstanceName(deletedPath);
      listener.onDataNodeDelete(instanceName);
    }
Notify the listener about the node deletion. This should be called from the event executor thread.
@param deletedPath the path that was deleted.
ambry-clustermap/src/main/java/com/github/ambry/clustermap/PropertyStoreToDataNodeConfigAdapter.java