njnu-seafish commented on code in PR #17939:
URL: 
https://github.com/apache/dolphinscheduler/pull/17939#discussion_r2757974660


##########
dolphinscheduler-master/src/main/java/org/apache/dolphinscheduler/server/master/engine/executor/plugin/condition/ConditionLogicTask.java:
##########
@@ -95,9 +95,11 @@ private DependResult calculateConditionResult() {
     private DependResult getDependResultForItem(ConditionDependentItem item, 
Map<Long, TaskInstance> taskInstanceMap) {
         TaskInstance taskInstance = taskInstanceMap.get(item.getDepTaskCode());
         if (taskInstance == null) {
-            log.info("The depend item: {} has not completed yet", 
DependResult.FAILED);
-            log.info("The dependent result will be {}", DependResult.FAILED);
-            return DependResult.FAILED;
+            // Dependent task not found – likely misconfigured task code
+            log.error("Dependent task definition missing, depTaskCode: {}", 
item.getDepTaskCode());
+            throw new RuntimeException(String.format(
+                    "Dependency validation failed: task code %d not found in 
current workflow. Check dependency config: %s",
+                    item.getDepTaskCode(), item));

Review Comment:
   > You should perform validation when the workflow insert/update or 
`ConditionLogicTask` start method. The validation logic should be check if the 
task is exist at `IWorkflowGraph`.
   
   OK. Thanks. 
   
   add check in importing workflow case:
   https://github.com/apache/dolphinscheduler/pull/17772
   
   add check in copying workflow case:
   https://github.com/apache/dolphinscheduler/pull/17774



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