metricName: loadbalancing.googleapis.com|https|backend_latencies unable to fetch metrics from external metrics API: Distributions are not supported

[pabloxtiyo]

I was trying to configure the external metrics with the hpa by using latency but i'm, getting the following error:

Warning FailedGetExternalMetric horizontal-pod-autoscaler unable to get external metric bt-mservices/loadbalancing.googleapis.com|https|backend_latencies/&LabelSelector{MatchLabels:map[string]string{resource.labels.backend_name: k8s1-daea7033-bt-mservices-core-api-service-80-eb0aa30d,},MatchExpressions:[]LabelSelectorRequirement{},}: unable to fetch metrics from external metrics API: Distributions are not supported

Sharing my HPA configuration
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
name: core-api-hpa
namespace: bt-mservices
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: core-api-deployment
minReplicas: 1
maxReplicas: 5
metrics:

• type: External
  external:
  metricName: loadbalancing.googleapis.com|https|backend_latencies
  targetValue: "1000"
  metricSelector:
  matchLabels:
  resource.labels.backend_name: k8s1-daea7033-bt-mservices-core-api-service-xx-xxxxxxx

[TheNha]

You need enable-distribution-support=true in custom-metrics-stack-driver deployment.
https://stackoverflow.com/questions/55258400/horizontal-pod-autoscaler-hpa-on-google-kubernetes-engine-gke-using-backend