viirya commented on code in PR #11218:
URL: https://github.com/apache/datafusion/pull/11218#discussion_r1682236590
##########
datafusion/physical-plan/src/joins/sort_merge_join.rs:
##########
@@ -858,6 +889,57 @@ impl SMJStream {
}
}
+ fn free_reservation(&mut self, buffered_batch: BufferedBatch) ->
Result<()> {
+ // Shrink memory usage for in memory batches only
+ if buffered_batch.spill_file.is_none() &&
buffered_batch.batch.is_some() {
+ self.reservation
+ .try_shrink(buffered_batch.size_estimation)?;
+ }
Review Comment:
We should also handle `else` cases, i.e., spilling file is `Some` and
`batch` is also `Some`, and both are `None`, etc.
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