@JsonProperty(HOST_HOST_STATUS_UNHEALTHY)
  @ApiModelProperty(name = HOST_HOST_STATUS_UNHEALTHY)
  public int getUnhealthyStatusHosts() {
    return unhealthyStatusHosts;
  }
@return number of hosts having host status UNHEALTHY
ambari-server/src/main/java/org/apache/ambari/server/state/ClusterHealthReport.java