public void setComponentName(String componentName) {
    this.componentName = componentName;
  }
Sets the component name that this alert is associated with, if any. Some
alerts are scoped at the service level and will not have a component name.

@param componentName the component name or {@code null} if none.
ambari-server/src/main/java/org/apache/ambari/server/orm/entities/AlertDefinitionEntity.java