andygrove opened a new issue, #1611:
URL: https://github.com/apache/datafusion-comet/issues/1611
### Describe the bug
Spark supports grouping by structs in aggregates, but Comet fails the
following error:
```
org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in
stage 1296.0 failed 1 times, most recent failure: Lost task 0.0 in stage 1296.0
(TID 1312) (192.168.86.37 executor driver):
java.lang.UnsupportedOperationException: Unsupported data type
org.apache.spark.sql.Row
at
org.apache.spark.sql.catalyst.expressions.SpecializedGettersReader.read(SpecializedGettersReader.java:83)
at
org.apache.spark.sql.catalyst.expressions.UnsafeRow.get(UnsafeRow.java:334)
at org.apache.spark.sql.Dataset.$anonfun$rdd$2(Dataset.scala:3736)
```
### Steps to reproduce
See repro test `test("aggregate group by single column")` in
https://github.com/apache/datafusion-comet/pull/1610
### Expected behavior
_No response_
### Additional context
_No response_
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