From f645924553b577ae0ba3f9ce9a34cbfd29fe79ca Mon Sep 17 00:00:00 2001
From: "wangguangxin.cn" <wangguangxin.cn@bytedance.com>
Date: Wed, 26 Jun 2024 11:50:27 +0800
Subject: [PATCH] fix

---
 .../gluten/extension/columnar/OffloadSingleNode.scala       | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/OffloadSingleNode.scala b/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/OffloadSingleNode.scala
index df3915c62ba92..9c7db0488bd4a 100644
--- a/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/OffloadSingleNode.scala
+++ b/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/OffloadSingleNode.scala
@@ -369,13 +369,13 @@ case class OffloadWindow() extends OffloadSingleNode with LogLevelUtil {
   private val replace = new ReplaceSingleNode()
 
   override def offload(plan: SparkPlan): SparkPlan = plan match {
-    case window: WindowExec =>
+    case window: WindowExec if BackendsApiManager.getSettings.requiredChildOrderingForWindow() =>
       if (TransformHints.isNotTransformable(window)) {
         return window
       }
 
-      val transformer = replace.doReplace(window)
-      val newChild = transformer.children.head match {
+      val transformer = replace.doReplace(window).asInstanceOf[UnaryTransformSupport]
+      val newChild = transformer.child match {
         case SortExec(_, false, child, _)
             if outputOrderSatisfied(child, transformer.requiredChildOrdering.head) =>
           child