mbutrovich commented on code in PR #4460:
URL: https://github.com/apache/datafusion-comet/pull/4460#discussion_r3321464294


##########
spark/src/test/scala/org/apache/comet/exec/CometExecSuite.scala:
##########
@@ -3925,6 +3925,21 @@ class CometExecSuite extends CometTestBase {
     }
   }
 
+  test("CometLocalTableScanExec handles NullType column") {
+    withSQLConf(CometConf.COMET_EXEC_LOCAL_TABLE_SCAN_ENABLED.key -> "true") {
+      val df = spark.sql("SELECT * FROM VALUES ('a', null), ('b', null) AS 
t(x, y)")

Review Comment:
   I manually inspected the plans, but the native shuffle suite is a more 
exhaustive check since it sees that we shuffled the data.



##########
spark/src/test/scala/org/apache/comet/exec/CometExecSuite.scala:
##########
@@ -3925,6 +3925,21 @@ class CometExecSuite extends CometTestBase {
     }
   }
 
+  test("CometLocalTableScanExec handles NullType column") {
+    withSQLConf(CometConf.COMET_EXEC_LOCAL_TABLE_SCAN_ENABLED.key -> "true") {
+      val df = spark.sql("SELECT * FROM VALUES ('a', null), ('b', null) AS 
t(x, y)")

Review Comment:
   Thanks for the review @kazuyukitanimura!



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