title: HPA scale down not happening properly
body: <p>I have created HPA for my deployment, it’s working fine for scaling up to max replicas (6 in my case), when load reduces its scale down to 5 but it supposed to come to my original state of replicas (1 in my case) as load becomes normal . I have verified after 30-40 mins still my application have 5 replicas ..
  It supposed to be 1 replica.</p>
  
  <pre><code>[ec2-user@ip-192-168-x-x ~]$ kubectl describe hpa admin-dev -n dev
  
  Name: admin-dev
  Namespace: dev
  Labels: &lt;none&gt;
  Annotations: &lt;none&gt;
  CreationTimestamp: Thu, 24 Oct 2019 07:36:32 +0000
  Reference: Deployment/admin-dev
  Metrics: ( current / target )
  resource memory on pods (as a percentage of request): 49% (1285662037333m) / 60%
  Min replicas: 1
  Max replicas: 10
  Deployment pods: 3 current / 3 desired
  Conditions:
    Type           Status Reason             Message
    ----           ------ ------             -------
    AbleToScale    True   ReadyForNewScale   recommended size matches current size
    ScalingActive  True   ValidMetricFound   the HPA was able to successfully calculate a replica count from memory resource utilization (percentage of request)
    ScalingLimited False  DesiredWithinRange the desired count is within the acceptable range 
  
  Events:
    Type   Reason            Age   From                      Message
    ----   ------            ----  ----                      -------
    Normal SuccessfulRescale 13m   horizontal-pod-autoscaler New size: 2; reason: memory resource utilization (percentage of request) above target
    Normal SuccessfulRescale 5m27s horizontal-pod-autoscaler New size: 3; reason: memory resource utilization (percentage of request) above target
  </code></pre>