andygrove commented on a change in pull request #8222:
URL: https://github.com/apache/arrow/pull/8222#discussion_r492076215
##########
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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