echauchot commented on code in PR #22985:
URL: https://github.com/apache/flink/pull/22985#discussion_r1307106011
##########
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/adaptive/Executing.java:
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@@ -144,6 +188,17 @@ private void maybeRescale() {
}
}
+ private Duration timeSinceLastRescale() {
+ return Duration.between(lastRescale, Instant.now());
+ }
+
+ private void rescaleWhenCooldownPeriodIsOver() {
+ context.runIfConditionOrSchedule(
+ timeSinceLastRescale().compareTo(scalingIntervalMin) > 0,
+ this::maybeRescale,
+ scalingIntervalMin); // reset cooldown period
Review Comment:
That is right. My first implementation scheduled ad 08:01:35 but @dmvk
suggested
[here](https://lists.apache.org/thread/m2w2xzfjpxlw63j0k7tfxfgs0rshhwwr) that
we keep the min interval low but we restart the cooldown period each time. That
is what is expressed in the FLIP
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