tillrohrmann commented on a change in pull request #15812:
URL: https://github.com/apache/flink/pull/15812#discussion_r634462830



##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/DefaultDeclareResourceRequirementServiceConnectionManager.java
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@@ -87,7 +87,9 @@ private void triggerResourceRequirementsSubmission(
                 () -> sendResourceRequirements(resourceRequirementsToSend),
                 new ExponentialBackoffRetryStrategy(
                         Integer.MAX_VALUE, sleepOnError, maxSleepOnError),
-                throwable -> !(throwable instanceof CancellationException),
+                throwable ->
+                        !(throwable instanceof CancellationException)
+                                && !(throwable instanceof 
UnsupportedOperationException),

Review comment:
       But the production code should never see an 
`UnsupportedOperationException`. This points towards an implementation mistake.




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