Report

Keda scales down the pods even when invisible message are still being processed

Expected Behavior

Send a message.
Keda scales to 1 pods
Pod processes message.
Pod finishes
Cool down time
Keda scales down to 0 pods

Actual Behavior

Send a message.
Keda scales to 1 pods
Keda things queue length is 0
Cool down time
Keda scales down to 0 pods

Steps to Reproduce the Problem

1. Azure function app on storage queue with sleep of 10 minutes
2. Keda on message same storage queue with messageCount: "1" and cooldowntime of 300
3. Send a message, pod will never finish

Logs from KEDA operator

example

KEDA Version

2.0.0

Kubernetes Version

1.18

Platform

Microsoft Azure

Scaler Details

No response

I know I can increase the cooldown time but that still means the scaling is not reacting to new messages coming in