andygrove opened a new issue, #2636:
URL: https://github.com/apache/datafusion-comet/issues/2636
### Describe the bug
## CometFuzzTestSuite
- regexp_replace (native_comet, native shuffle) *** FAILED *** (198
milliseconds)
```
2025-10-23T00:06:26.8480812Z org.apache.spark.SparkException: Job aborted
due to stage failure: Task 4 in stage 6267.0 failed 1 times, most recent
failure: Lost task 4.0 in stage 6267.0 (TID 16053) (localhost executor driver):
org.apache.comet.CometNativeException: Unsupported data type Dictionary(Int32,
Utf8) for function regexp_replace.
```
- regexp_replace (native_comet, jvm shuffle) *** FAILED *** (146
milliseconds)
```
2025-10-23T00:06:27.4005547Z org.apache.spark.SparkException: Job aborted
due to stage failure: Task 3 in stage 6278.0 failed 1 times, most recent
failure: Lost task 3.0 in stage 6278.0 (TID 16095) (localhost executor driver):
org.apache.comet.CometNativeException: Unsupported data type Dictionary(Int32,
Utf8) for function regexp_replace.
```
## CometMapExpressionSuite
- map_from_arrays *** FAILED *** (416 milliseconds)
```
org.apache.spark.SparkException: Job aborted due to stage failure: Task 1 in
stage 3.0 failed 1 times, most recent failure: Lost task 1.0 in stage 3.0 (TID
12) (localhost executor driver): org.apache.comet.CometNativeException: Invalid
argument error: column types must match schema types, expected Map(Field {
name: "entries", data_type: Struct([Field { name: "key", data_type: Utf8,
nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }, Field {
name: "value", data_type: Int32, nullable: true, dict_id: 0, dict_is_ordered:
false, metadata: {} }]), nullable: false, dict_id: 0, dict_is_ordered: false,
metadata: {} }, false) but found Map(Field { name: "entries", data_type:
Struct([Field { name: "key", data_type: Dictionary(Int32, Utf8), nullable:
false, dict_id: 0, dict_is_ordered: false, metadata: {} }, Field { name:
"value", data_type: Int32, nullable: true, dict_id: 0, dict_is_ordered: false,
metadata: {} }]), nullable: false, dict_id: 0, dict_is_ordered: false, metada
ta: {} }, false) at column index 0
```
## CometArrayExpressionSuite
- array_except - test all types (native Parquet reader) *** FAILED *** (1
second, 834 milliseconds)
```
org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in
stage 823.0 failed 1 times, most recent failure: Lost task 0.0 in stage 823.0
(TID 2615) (localhost executor driver): org.apache.comet.CometNativeException:
called `Result::unwrap()` on an `Err` value: InvalidArgumentError("ListArray
expected data type Dictionary(Int32, Utf8) got Utf8 for \"item\"")
```
### Steps to reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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