Jefffrey commented on code in PR #19547:
URL: https://github.com/apache/datafusion/pull/19547#discussion_r2656765382


##########
datafusion/functions/src/string/concat.rs:
##########
@@ -206,7 +207,11 @@ impl ScalarUDFImpl for ConcatFunc {
                         DataType::Utf8View => {
                             let string_array = as_string_view_array(array)?;
 
-                            data_size += string_array.len();
+                            data_size += string_array
+                                .data_buffers()
+                                .iter()
+                                .map(|buf| buf.len())
+                                .sum::<usize>();

Review Comment:
   I'm a bit cautious that this could significantly overestimate the size 
required, depending on the string view passed in 🤔 



##########
datafusion/functions/src/string/concat.rs:
##########


Review Comment:
   If we're looking at having more accurate estimates, we could fix these to 
ensure we look at only the data sliced by our string arrays



-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: [email protected]

For queries about this service, please contact Infrastructure at:
[email protected]


---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]

Reply via email to