gyfora commented on code in PR #581:
URL:
https://github.com/apache/flink-kubernetes-operator/pull/581#discussion_r1183604538
##########
flink-kubernetes-operator-autoscaler/src/main/java/org/apache/flink/kubernetes/operator/autoscaler/JobVertexScaler.java:
##########
@@ -93,15 +94,27 @@ public int computeScaleTargetParallelism(
LOG.debug("Target processing capacity for {} is {}", vertex,
targetCapacity);
double scaleFactor = targetCapacity / averageTrueProcessingRate;
double minScaleFactor = 1 - conf.get(MAX_SCALE_DOWN_FACTOR);
+ double maxScaleFactor = 1 + conf.get(MAX_SCALE_UP_FACTOR);
if (scaleFactor < minScaleFactor) {
LOG.debug(
"Computed scale factor of {} for {} is capped by maximum
scale down factor to {}",
scaleFactor,
vertex,
minScaleFactor);
scaleFactor = minScaleFactor;
+ } else if (scaleFactor > maxScaleFactor) {
+ LOG.debug(
+ "Computed scale factor of {} for {} is capped by maximum
scale up factor to {}",
+ scaleFactor,
+ vertex,
+ maxScaleFactor);
+ scaleFactor = maxScaleFactor;
}
+ // Cap target capacity according to the capped scale factor
+ double cappedTargetCapacity = averageTrueProcessingRate * scaleFactor;
+ LOG.debug("Capped target processing capacity for {} is {}", vertex,
cappedTargetCapacity);
Review Comment:
Also it would be good to have a unit test for the changed behaviour
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