@Override
  public String toString() {
    return "ComponentStatus [componentName=" + componentName + ", msg=" + msg
        + ", status=" + status
        + ", serviceName=" + serviceName + ", clusterId=" + clusterId
        + ", stackVersion=" + stackVersion + ", configurationTags="
        + configurationTags + ", extra=" + extra + "]";
  }
Gets extra information coming from the status.
ambari-server/src/main/java/org/apache/ambari/server/agent/ComponentStatus.java