rluvaton commented on code in PR #15700:
URL: https://github.com/apache/datafusion/pull/15700#discussion_r2041544882
##########
datafusion/physical-plan/src/sorts/sort.rs:
##########
@@ -431,12 +422,16 @@ impl ExternalSorter {
let batches_to_spill = std::mem::take(globally_sorted_batches);
self.reservation.free();
- let in_progress_file =
self.in_progress_spill_file.as_mut().ok_or_else(|| {
- internal_datafusion_err!("In-progress spill file should be
initialized")
- })?;
+ let (in_progress_file, max_record_batch_size) =
+ self.in_progress_spill_file.as_mut().ok_or_else(|| {
+ internal_datafusion_err!("In-progress spill file should be
initialized")
+ })?;
for batch in batches_to_spill {
in_progress_file.append_batch(&batch)?;
+
+ *max_record_batch_size =
+ (*max_record_batch_size).max(batch.get_actually_used_size());
Review Comment:
Unless the **actual array content** before spill and after spill is
different this function will **always** return the correct result regardless of
the spill file format.
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