@Subscribe
  @AllowConcurrentEvents
  public void onEvent(ServiceComponentUninstalledEvent event) {
    LOG.debug("Received event {}", event);

    long clusterId = event.getClusterId();
    String serviceName = event.getServiceName();
    String componentName = event.getComponentName();
    String hostName = event.getHostName();

    m_alertsDao.removeCurrentByServiceComponentHost(clusterId, serviceName, componentName,
        hostName);
  }
Removes any {@link AlertCurrentEntity} for the given service, component and
host.
ambari-server/src/main/java/org/apache/ambari/server/events/listeners/alerts/AlertServiceComponentHostListener.java