viirya commented on code in PR #11218:
URL: https://github.com/apache/datafusion/pull/11218#discussion_r1674703720
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datafusion/physical-plan/src/joins/sort_merge_join.rs:
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@@ -867,12 +951,17 @@ impl SMJStream {
while !self.buffered_data.batches.is_empty() {
let head_batch = self.buffered_data.head_batch();
// If the head batch is fully processed, dequeue it
and produce output of it.
- if head_batch.range.end == head_batch.batch.num_rows()
{
+ if head_batch.range.end == head_batch.num_rows {
self.freeze_dequeuing_buffered()?;
if let Some(buffered_batch) =
self.buffered_data.batches.pop_front()
{
-
self.reservation.shrink(buffered_batch.size_estimation);
+ // Shrink mem usage for non spilled batches
only
+ if buffered_batch.spill_file.is_none() {
+ self.reservation
+
.try_shrink(buffered_batch.size_estimation)
+ .unwrap_or(());
Review Comment:
Why we need to change to `try_shrink` here? If the batch uses some memory
from the pool, the pool should have the size of the batch allocated.
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