kazuyukitanimura commented on code in PR #509:
URL: https://github.com/apache/datafusion-comet/pull/509#discussion_r1630778450


##########
spark/src/main/scala/org/apache/comet/CometSparkSessionExtensions.scala:
##########
@@ -712,17 +712,6 @@ class CometSparkSessionExtensions
     }
 
     override def apply(plan: SparkPlan): SparkPlan = {
-      // DataFusion doesn't have ANSI mode. For now we just disable CometExec 
if ANSI mode is
-      // enabled.
-      if (isANSIEnabled(conf)) {
-        if (COMET_ANSI_MODE_ENABLED.get()) {
-          logWarning("Using Comet's experimental support for ANSI mode.")
-        } else {
-          logInfo("Comet extension disabled for ANSI mode")
-          return plan
-        }
-      }

Review Comment:
   I am close to finish my PR to enable the spark tests with Spark 4.0 I.e. 
ANSI enabled, and I am disabling expressions that failed those tests with ANSI 
enabled.
   
   I would propose to hold this part of change for now. Perhaps after we fix 
all Spark 4.0 issues, we can backport the learning to Spark 3.4
   
   



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