Yohahaha commented on code in PR #10697:
URL: 
https://github.com/apache/incubator-gluten/pull/10697#discussion_r2389631210


##########
backends-velox/src/test/scala/org/apache/gluten/execution/VeloxScanSuite.scala:
##########
@@ -207,4 +207,78 @@ class VeloxScanSuite extends 
VeloxWholeStageTransformerSuite {
         }
     }
   }
+
+  test("parquet index based schema evolution") {
+    withSQLConf(VeloxConfig.PARQUET_USE_COLUMN_NAMES.key -> "false") {
+      withTempDir {
+        dir =>
+          val path = dir.getCanonicalPath
+          spark
+            .range(2)
+            .selectExpr("id as a", "cast(id + 10 as string) as b")
+            .write
+            .mode("overwrite")
+            .parquet(path)
+
+          withTable("test") {
+            sql(s"""create table test (c long, d string, e float) using 
parquet options
+                   |(path '$path')""".stripMargin)
+            var df = sql("select c, d from test")
+            checkAnswer(df, Seq(Row(0L, "10"), Row(1L, "11")))
+
+            df = sql("select d from test")
+            checkAnswer(df, Seq(Row("10"), Row("11")))
+
+            df = sql("select c from test")
+            checkAnswer(df, Seq(Row(0L), Row(1L)))
+
+            df = sql("select d, c from test")
+            checkAnswer(df, Seq(Row("10", 0L), Row("11", 1L)))
+
+            df = sql("select c, d, e from test")
+            checkAnswer(df, Seq(Row(0L, "10", null), Row(1L, "11", null)))
+
+            df = sql("select e, d, c from test")
+            checkAnswer(df, Seq(Row(null, "10", 0L), Row(null, "11", 1L)))
+          }
+      }
+    }
+  }
+
+  test("ORC index based schema evolution") {
+    withSQLConf(VeloxConfig.ORC_USE_COLUMN_NAMES.key -> "false") {
+      withTempDir {
+        dir =>
+          val path = dir.getCanonicalPath
+          spark
+            .range(2)
+            .selectExpr("id as a", "cast(id + 10 as string) as b")
+            .write
+            .mode("overwrite")
+            .orc(path)
+
+          withTable("test") {
+            sql(s"""create table test (c long, d string, e float) using orc 
options
+                   |(path '$path')""".stripMargin)
+            var df = sql("select c, d from test")
+            checkAnswer(df, Seq(Row(0L, "10"), Row(1L, "11")))

Review Comment:
   > Unfortunately, I tried and it doesn't work because this compares against 
Vanilla Spark and Vanilla Spark doesn't support this out of the box (see the 
discussion with Rui above).
   
   does vanilla spark need any extra configs? 
   
   users always expects gluten's behavior align with spark, if not, I think we 
need rethinking this feature. @rui-mo 



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