Rui Fan created FLINK-34178:
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Summary: The ScalingTracking of autoscaler is wrong
Key: FLINK-34178
URL: https://issues.apache.org/jira/browse/FLINK-34178
Project: Flink
Issue Type: Bug
Components: Autoscaler
Affects Versions: kubernetes-operator-1.8.0
Reporter: Rui Fan
Assignee: Rui Fan
The ScalingTracking of autoscaler is wrong, it's always greater than
AutoScalerOptions#STABILIZATION_INTERVAL.
h2. Reason:
When flink job isStabilizing, ScalingMetricCollector#updateMetrics will return
a empty metric history. In the JobAutoScalerImpl#runScalingLogic method, if
`collectedMetrics.getMetricHistory().isEmpty()` , we don't update the
ScalingTracking.
The default value of AutoScalerOptions#STABILIZATION_INTERVAL is 5 min, so the
restartTime is always greater than 5 min.
However, it's quick when we use rescale api.
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