shuai-xu commented on code in PR #10095:
URL: 
https://github.com/apache/incubator-gluten/pull/10095#discussion_r2241706677


##########
gluten-flink/planner/src/main/java/org/apache/gluten/rexnode/functions/BaseRexCallConverters.java:
##########
@@ -62,6 +62,14 @@ public DefaultRexCallConverter(String functionName) {
   public TypedExpr toTypedExpr(RexCall callNode, RexConversionContext context) 
{
     List<TypedExpr> params = getParams(callNode, context);
     Type resultType = getResultType(callNode);
+    // TODO: cast don't support input and result has same type. Refine it.

Review Comment:
   I'm not sure why flink add cast to same types. We need to make it clear 
later and then decide whether to support it in velox or not.



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