andygrove opened a new issue, #3331:
URL: https://github.com/apache/datafusion-comet/issues/3331
## Description
The `width_bucket.sql` SQL file test crashes with a native type mismatch
error.
## Error
```
CometNativeException: Comet Internal Error: Failed to downcast to
Int64Array, actual type: Int32
at org.apache.comet.Native.columnarToRowConvert(Native Method)
```
The native `width_bucket` implementation produces an `Int32` output array,
but the columnar-to-row converter expects `Int64`. The output schema type needs
to match what Spark expects.
## Reproduction
Run `CometSqlFileTestSuite` — the `width_bucket.sql` test fails with a
`SparkException` wrapping the native downcast error.
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