alamb commented on code in PR #13585:
URL: https://github.com/apache/datafusion/pull/13585#discussion_r1861280467
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datafusion/physical-plan/src/aggregates/topk/heap.rs:
##########
@@ -151,10 +151,11 @@ where
}
fn drain(&mut self) -> (ArrayRef, Vec<usize>) {
+ let nulls = None;
let (vals, map_idxs) = self.heap.drain();
- let vals = Arc::new(PrimitiveArray::<VAL>::from_iter_values(vals));
- let vals = adjust_output_array(&self.data_type, vals).expect("Type is
incorrect");
- (vals, map_idxs)
+ let arr = PrimitiveArray::<VAL>::new(ScalarBuffer::from(vals), nulls)
Review Comment:
I believe this will also be slightly faster as the ScalarBuffer::from avoids
copying the values into the Vec:
https://docs.rs/arrow/latest/arrow/buffer/struct.ScalarBuffer.html#impl-From%3CVec%3CT%3E%3E-for-ScalarBuffer%3CT%3E
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