davidradl commented on code in PR #25770:
URL: https://github.com/apache/flink/pull/25770#discussion_r1901668640


##########
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/adaptive/AdaptiveScheduler.java:
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@@ -1266,7 +1269,12 @@ public void goToRestarting(
                         forcedRestart,
                         userCodeClassLoader,
                         failureCollection));
-        numRestarts++;
+

Review Comment:
   Prior to the change the numRestarts was all the restarts (including the 
rescales). After the fix, this metric now only reports restarts that were not 
rescales.  `numRestarts` implies all restarts to me. I suggest we always 
increment `numRestarts` as before, then add 
   
   ```
   if (failureCollection.isEmpty()) {
               numRescales++;
   }
   ```
   
   We would need to amend the documentation accordingly to say numRestarts 
includes all restarts including rescales.
   
    



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