private boolean reloadLdapServerProperties() {
    LdapServerProperties properties = ldapConfigurationProvider.get().getLdapServerProperties();
    if (!properties.equals(ldapServerProperties.get())) {
      LOG.info("Reloading properties");
      ldapServerProperties.set(properties);
      return true;
    }
    return false;
  }
Reloads LDAP Server properties from configuration

@return true if properties were reloaded
ambari-server/src/main/java/org/apache/ambari/server/security/authorization/AmbariLdapAuthenticationProvider.java