StabilityLevel: metrics.ALPHA,
		}, []string{"action", "error"})

	reconciliationsDuration = metrics.NewHistogramVec(
		&metrics.HistogramOpts{
			Subsystem:      hpaControllerSubsystem,
			Name:           "reconciliation_duration_seconds",

- HPA controller starts to expose metrics from the kube-controller-manager.\n- `reconciliations_total`: Number of reconciliation of HPA controller. \n- `reconciliation_duration_seconds`: The time(seconds) that the HPA controller takes to reconcile once. ([#116010](https://github.com/kubernetes/kubernetes/pull/116010), [@sanposhiho](https://github.com/sanposhiho))