davidradl commented on code in PR #26277:
URL: https://github.com/apache/flink/pull/26277#discussion_r1986265859


##########
flink-core/src/main/java/org/apache/flink/configuration/CoreOptions.java:
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@@ -459,7 +459,10 @@ public static String[] mergeListsToArray(List<String> 
base, List<String> append)
             ConfigOptions.key("parallelism.default")
                     .intType()
                     .defaultValue(1)
-                    .withDescription("Default parallelism for jobs.");
+                    .withDescription("Default parallelism for jobs. There is 
an exception here. When creating a"

Review Comment:
   I am not sure what the new description is saying:
   - Is the description ever a default of 1? If the default is not always 1 - I 
suggest we consider removing the default though this would have migration 
implications we would need to think through. 
   - the phrase "There is an exception here." I would not use the word 
exception; as this is an overloaded word implying there might be an error of 
some sort.
   - what does "the return value of Runtime. getRuntime. availableProcessors()" 
mean?
   



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