public void setServiceName(String serviceName) {
    this.serviceName = serviceName;
  }
Sets the name of the service that the alert is defined for. Every alert
definition is related to exactly 1 service.

@param serviceName
         the name of the service (not {@code null}).
ambari-server/src/main/java/org/apache/ambari/server/orm/entities/AlertHistoryEntity.java