tustvold commented on code in PR #6382:
URL: https://github.com/apache/arrow-datafusion/pull/6382#discussion_r1198000591
##########
datafusion/core/src/physical_plan/sorts/sort.rs:
##########
@@ -115,6 +120,12 @@ impl ExternalSorter {
.with_can_spill(true)
.register(&runtime.memory_pool);
+ let mut merge_reservation =
+ MemoryConsumer::new(format!("ExternalSorterMerge[{partition_id}]"))
+ .register(&runtime.memory_pool);
+
+ merge_reservation.resize(EXTERNAL_SORTER_MERGE_RESERVATION);
Review Comment:
I take it as a positive sign that this was required to make the spill tests
pass, without this the merge would exceed the memory limit and fail
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