def get_status
      status = @http.aget(PredictionIO::AsyncRequest.new('/')).get
      begin
        status.body
      rescue
        status
      end
    end
def get_status
      status = @http.aget(PredictionIO::AsyncRequest.new('/')).get
      begin
        status.body
      rescue
        status
      end
    end
Returns PredictionIO's status in string.