in src/main/java/org/apache/sling/discovery/oak/OakDiscoveryService.java [154:161]
public void handleTopologyEvent(TopologyEvent event) {
OakViewChecker checker = oakViewChecker;
if (activated && checker != null
&& (event.getType() == Type.TOPOLOGY_CHANGED || event.getType() == Type.PROPERTIES_CHANGED)) {
logger.debug("changePropagationListener.handleTopologyEvent: topology changed - propagate through connectors");
checker.triggerAsyncConnectorPing();
}
}