gyfora commented on code in PR #622:
URL: 
https://github.com/apache/flink-kubernetes-operator/pull/622#discussion_r1242177550


##########
flink-kubernetes-operator/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkDeploymentController.java:
##########
@@ -140,6 +141,12 @@ public UpdateControl<FlinkDeployment> 
reconcile(FlinkDeployment flinkApp, Contex
                         previousDeployment,
                         false);
             }
+            // Rely on the last stable spec if rolling back
+            if (flinkApp.getStatus().getReconciliationStatus().getState()
+                    == ReconciliationState.ROLLING_BACK) {
+                flinkApp.setSpec(
+                        
flinkApp.getStatus().getReconciliationStatus().deserializeLastStableSpec());

Review Comment:
   You are right in a rollback scenario the job is definitely not in running. 
So the only time we will get back save point if there is no JM meta and then 
the getAvailableUpgradeMode will actually first delete the JM deployment and 
return SAVEPOINT



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