andygrove commented on a change in pull request #8222:
URL: https://github.com/apache/arrow/pull/8222#discussion_r492074780
##########
File path: rust/datafusion/src/physical_plan/hash_aggregate.rs
##########
@@ -48,9 +48,12 @@ use fnv::FnvHashMap;
/// Hash aggregate modes
#[derive(Debug, Copy, Clone)]
pub enum AggregateMode {
+ /// Aggregate mode without any partial/intermediate aggregation
+ NoPartial,
Review comment:
Spark uses the term `Complete`. Our existing names `Partial` and `Final`
were based on Spark's naming.
##########
File path: rust/datafusion/src/physical_plan/hash_aggregate.rs
##########
@@ -48,9 +48,12 @@ use fnv::FnvHashMap;
/// Hash aggregate modes
#[derive(Debug, Copy, Clone)]
pub enum AggregateMode {
+ /// Aggregate mode without any partial/intermediate aggregation
+ NoPartial,
Review comment:
```
/**
* An [[AggregateFunction]] with [[Complete]] mode is used to evaluate this
function directly
* from original input rows without any partial aggregation.
* This function updates the given aggregation buffer with the original
input of this
* function. When it has processed all input rows, the final result of this
function is returned.
*/
case object Complete extends AggregateMode
```
##########
File path: rust/datafusion/src/physical_plan/hash_aggregate.rs
##########
@@ -374,6 +380,18 @@ impl RecordBatchReader for GroupedHashAggregateIterator {
col,
accums
),
+ DataType::LargeList(_) => {
+ let len = array.len();
+ let list_array =
+
array.as_any().downcast_ref::<LargeListArray>().unwrap();
Review comment:
nit: I'd prefer that we use `expect` rather than `unwrap` so we can add
a meaningful message.
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