isidentical commented on code in PR #3593:
URL: https://github.com/apache/arrow-datafusion/pull/3593#discussion_r978356394
##########
datafusion/core/src/physical_plan/sorts/sort.rs:
##########
@@ -124,6 +124,20 @@ impl ExternalSorter {
// calls to `timer.done()` below.
let _timer = tracking_metrics.elapsed_compute().timer();
let partial = sort_batch(input, self.schema.clone(), &self.expr,
self.fetch)?;
+ // The resulting batch might be smaller than the input batch if
there
+ // is an propagated limit.
+ if self.fetch.is_some() {
+ let new_size = batch_byte_size(&partial.sorted_batch);
+ let size_delta = size.checked_sub(new_size).unwrap_or_else(|| {
+ panic!(
Review Comment:
Makes sense, should be fixed now!
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