VojtechMucha commented on PR #19035:
URL: https://github.com/apache/pinot/pull/19035#issuecomment-5280256281
> **Major — `UUID_ARRAY` throws a self-contradictory error**
(`PinotResultSet.java` `getList` default, and the same in
`PinotGrpcResultSet.java` `getList`)
>
> `ColumnDataType.UUID_ARRAY` is in `ARRAY_TYPES`, so `isArray()` returns
`true` and `getObject` dispatches it to `getList`, which has no `UUID_ARRAY`
case → `default: throw new SQLDataException("Data type is not an array:
UUID_ARRAY")`, which is factually wrong (it _is_ an array). Meanwhile
`DriverUtils.isArrayDataType("UUID_ARRAY")` returns `true`, so metadata
advertises `Types.JAVA_OBJECT`/`List` while the accessor throws.
>
> Fix: add a `case UUID_ARRAY:` (both decoders yield `String[]`, so treat
like `STRING_ARRAY`), or exclude it from `isArrayDataType` so metadata and
accessor agree. At minimum reword the default message to `"Unsupported array
data type: " + dataType`.
`UUID` types are pretty new. I added both `UUID` and `UUID_ARRAY`.
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