litiliu commented on code in PR #1175:
URL: 
https://github.com/apache/flink-kubernetes-operator/pull/1175#discussion_r3774147894


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flink-kubernetes-operator/src/test/java/org/apache/flink/kubernetes/operator/metrics/OperatorJosdkMetricsTest.java:
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@@ -156,17 +156,13 @@ public boolean isLastAttempt() {
         assertEquals(1, getCount("Resource.Event"));
         assertEquals(1, getCount("Resource.Event.ADDED"));
 
-        operatorMetrics.cleanupDone(resourceId, metadata);

Review Comment:
   Thanks for pointing this out. I agree that `cleanupDone` and the subsequent 
terminal callback must be tested together.
   I have pushed a new version. 
   The updated `testCleanupMetrics` now explicitly calls 
`cleanupDone(resourceId, metadata)` followed by both 
`reconciliationFinished(...)` and `reconciliationFailed(...)`, and asserts that 
the metric registry and resource-metrics cache remain empty. The concurrent 
tests also cover `cleanupDone` racing with each terminal callback.
   
   I kept `testMetrics` focused on the normal callback path and restored its 
positive `Reconciliation.finished` assertion. The original 
`Reconciliation.cleanup` assertion cannot remain unchanged because the new 
contract is for `cleanupDone` to unregister the entire per-resource group 
immediately, so that counter no longer remains registered.



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