@Override
  protected void startUp() throws Exception {
    boolean enabled = m_configuration.isAlertCacheEnabled();
    if (!enabled) {
      stopAsync();
    }
  }
{@inheritDoc}
<p/>
Invokes {@link #stop()} if not enabled.
ambari-server/src/main/java/org/apache/ambari/server/state/services/CachedAlertFlushService.java