echauchot commented on code in PR #24237:
URL: https://github.com/apache/flink/pull/24237#discussion_r1477979041


##########
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/adaptive/Executing.java:
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@@ -88,7 +88,7 @@ class Executing extends StateWithExecutionGraph implements 
ResourceListener {
         deploy();
 
         // check if new resources have come available in the meantime
-        rescaleWhenCooldownPeriodIsOver();
+        context.runIfState(this, this::rescaleWhenCooldownPeriodIsOver, 
Duration.ZERO);

Review Comment:
   I see: it was missing the condition that the current state is the Executing 
state when executing the rescale (and transitioning to Restarting state). In 
other words, check that the transition to Executing is finished before any 
other transition. Now with the assert in the builder 
`testExecutingChecksForNewResourcesWhenBeingCreated` will fail if a transition 
happens during Executing creation.



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