tustvold opened a new issue #1132: URL: https://github.com/apache/arrow-rs/issues/1132
**Describe the bug** Originally pointed out by @jorgecarleitao [here](https://github.com/apache/arrow-rs/pull/1041#discussion_r778438011). It is currently possible to construct `RecordReader<T>` and by extension `PrimitiveArrayReader` with any `T: DataType`. This is despite an explicit assumption in `RecordReader`'s buffering logic that `DataType::T` can be zero-initialized and stored in `MutableBuffer`. Fortunately `DataType::T: ParquetValueType` which is a sealed trait, however, `ParquetValueType` is implemented for types such as `Int96` and `ByteArray` which aren't POD. **To Reproduce** ``` PrimitiveArrayReader::<ByteArrayType>::new(...) ``` **Expected behavior** It shouldn't be possible to construct `PrimitiveArrayReader` with invalid types -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
