wForget commented on code in PR #7204:
URL: https://github.com/apache/kyuubi/pull/7204#discussion_r2348186377


##########
extensions/spark/kyuubi-spark-authz/src/main/scala/org/apache/kyuubi/plugin/spark/authz/PrivilegesBuilder.scala:
##########
@@ -100,13 +101,18 @@ object PrivilegesBuilder {
         privilegeObjects += PrivilegeObject(table)
 
       case p =>
+        val existsChildOutputHolder = 
p.exists(_.isInstanceOf[ChildOutputHolder])
         for (child <- p.children) {
           // If current plan's references don't have relation to it's input, 
have two cases
           //   1. `MapInPandas`, `ScriptTransformation`
           //   2. `Project` output only have constant value
           if (columnPrune(p.references.toSeq ++ p.output, p.inputSet).isEmpty) 
{
-            // If plan is project and output don't have relation to input, can 
ignore.
-            if (!p.isInstanceOf[Project]) {
+            // 1. If plan is project and output don't have relation to input, 
can ignore.
+            // 2. If sub logic plan tree exists ChildOutputHolder node, it 
means that the output of
+            //    some nodes in the tree is fixed by RuleChildOutputMarker in 
some special
+            //    scenarios, such as the Aggregate(count(*)) child node. To 
avoid missing child node
+            //    permissions, we need to continue checking down.
+            if (!p.isInstanceOf[Project] || existsChildOutputHolder) {

Review Comment:
   This logic is in `for (child <- p.children) {`, which will be applied to all 
children of `p`. Do we need it for children  of `p` that are not 
`ChildOutputHolder`?



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