hsiang-c opened a new issue, #5239:
URL: https://github.com/apache/datafusion-comet/issues/5239
### Describe the bug
Native `collect_set` / `collect_list` over a struct with a non-nullable
nested field aborts in `GroupedHashAggregateStream::emit` during spill:
```shell
ArrowError: column types must match schema types,
expected List(Struct("isChurnedWholeRoute": Boolean, ...))
but found List(Struct("isChurnedWholeRoute": non-null Boolean, ...)) at
column index 1
```
Call Stack: GroupedHashAggregateStream::emit (row_hash.rs:1134) ← spill ←
try_update_memory_reservation. Fires only on the spill path.
Dependencies versions: DataFusion 54.1.0 / arrow 58.4.0.
### Steps to reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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