liurenjie1024 commented on code in PR #795:
URL: https://github.com/apache/iceberg-rust/pull/795#discussion_r1899878300


##########
crates/iceberg/src/spec/values.rs:
##########
@@ -2728,22 +2730,24 @@ mod _serde {
                     optional: _,
                 }) => match ty {
                     Type::Struct(struct_ty) => {
-                        let iters: Vec<Option<Literal>> = required
-                            .into_iter()
-                            .map(|(field_name, value)| {
-                                let field = struct_ty
-                                    .field_by_name(field_name.as_str())
-                                    .ok_or_else(|| {
-                                        invalid_err_with_reason(
-                                            "record",
-                                            &format!("field {} is not exist", 
&field_name),
-                                        )
-                                    })?;
-                                let value = value.try_into(&field.field_type)?;
-                                Ok(value)
+                        let mut value_map: HashMap<String, RawLiteralEnum> =

Review Comment:
   I don't quite understand why we ignore `optional` here? 



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