isidentical commented on code in PR #3593:
URL: https://github.com/apache/arrow-datafusion/pull/3593#discussion_r979251679
##########
datafusion/core/src/physical_plan/sorts/sort.rs:
##########
@@ -124,6 +124,21 @@ 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).ok_or_else(|| {
+ DataFusionError::Internal(format!(
+ "The size of the sorted batch is larger than the size
of the input batch: {} > {}",
+ size,
+ new_size
+ ))
+ })?;
+ self.shrink(size_delta);
+ self.metrics.mem_used().sub(size_delta);
Review Comment:
@Dandandan, thanks I've added the spill/not-spill one!
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