parthchandra commented on code in PR #620:
URL: https://github.com/apache/datafusion-comet/pull/620#discussion_r1663091296
##########
spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala:
##########
@@ -2141,6 +2141,25 @@ object QueryPlanSerde extends Logging with
ShimQueryPlanSerde with CometExprShim
scalarExprToProtoWithReturnType(algorithm, StringType, childExpr)
}
+ case struct @ CreateNamedStruct(_) =>
+ val valExprs = struct.valExprs.map(exprToProto(_, inputs, binding))
+ val dataType = serializeDataType(struct.dataType)
+
+ if (valExprs.forall(_.isDefined) && dataType.isDefined) {
+ val structBuilder = ExprOuterClass.CreateNamedStruct.newBuilder()
+ structBuilder.addAllValues(valExprs.map(_.get).asJava)
+ structBuilder.setDatatype(dataType.get)
+
+ Some(
+ ExprOuterClass.Expr
+ .newBuilder()
+ .setCreateNamedStruct(structBuilder)
+ .build())
+ } else {
+ withInfo(expr, struct.valExprs: _*)
Review Comment:
> I think we need to specify an info string here otherwise the user will not
see the reason for falling back to Spark (perhaps @parthchandra can confirm).
The user will get the reason from the child nodes. We could add the
additional message as @andygrove has suggested, but it is not strictly
necessary.
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