hvanhovell commented on code in PR #47572:
URL: https://github.com/apache/spark/pull/47572#discussion_r1704380657


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala:
##########
@@ -2338,10 +2342,12 @@ class Analyzer(override val catalogManager: 
CatalogManager) extends RuleExecutor
     private def resolveBuiltinOrTempFunction(
         name: Seq[String],
         arguments: Seq[Expression],
-        u: Option[UnresolvedFunction]): Option[Expression] = {
-      if (name.length == 1) {
+        u: UnresolvedFunction): Option[Expression] = {
+      if (name.size == 1  && u.isInternal) {
+        
Option(FunctionRegistry.internal.lookupFunction(FunctionIdentifier(name.head), 
arguments))

Review Comment:
   When we use the internal namespace we use that, and we do not fallback to 
something else.



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