[Fix-13657][Master]NPE caused by the execution of workflow with startNode and forbidden task (#13668)

HomminLee · web-flow · commit fba59981d41f · 2023-03-30T09:56:57.000+08:00
Co-authored-by: HomminLee &lt;lihongmin@ysstech.com&gt;
diff --git a/dolphinscheduler-master/src/main/java/org/apache/dolphinscheduler/server/master/runner/WorkflowExecuteRunnable.java b/dolphinscheduler-master/src/main/java/org/apache/dolphinscheduler/server/master/runner/WorkflowExecuteRunnable.java
@@ -1513,8 +1513,11 @@ private DependResult isTaskDepsComplete(String taskCode) {
      */
     private void setIndirectDepList(String taskCode, List<String> indirectDepCodeList) {
         TaskNode taskNode = dag.getNode(taskCode);
-        List<String> depCodeList = taskNode.getDepList();
-        for (String depsNode : depCodeList) {
+        // If workflow start with startNode or recoveryNode, taskNode may be null
+        if (taskNode == null) {
+            return;
+        }
+        for (String depsNode : taskNode.getDepList()) {
             if (forbiddenTaskMap.containsKey(Long.parseLong(depsNode))) {
                 setIndirectDepList(depsNode, indirectDepCodeList);
             } else {
