evgenyx00 opened a new issue, #5052: URL: https://github.com/apache/arrow-rs/issues/5052
**Which part is this question about** Deserialization from arrow-rs into nanoarrow **Describe your question** I’ve encountered a problem while serializing a basic Arrow object using StreamWriter with a single RecordBatch, and deserialize the object using nanoarrow, it fails while deserializing RecordBatch, due to header alignment verification in flatcc [https://github.com/apache/arrow-nanoarrow/blob/d104e9065101401c63e931acdc7c10f114c47eaf/dist/flatcc.c#L2453](url) The alignment failure occurs in the calculation of the base offset and the offset of the union value relative to the base. I'm not fully sure, the problem is arrow-rs or flatbuffers. **Additional context** Tested arrow-rs versions 5.0.0 and 47.0.0, so it's not a degradation or never worked. Steps to reproduce: 1. Create arrow object and save only RecordBatch bytes 2. Test using nanoarrow or example code [https://github.com/apache/arrow-nanoarrow/blob/d104e9065101401c63e931acdc7c10f114c47eaf/examples/cmake-ipc/src/app.c](url) 3. Code snippet ` fn get_arrow_bytes() -> Vec<u8> { let mut buf: Vec<u8> = Vec::new(); { let schema = Schema::new(vec![ Field::new("AAAAAAAA", DataType::Utf8, true) ]); let mut arrow_writer = writer::StreamWriter::try_new(&mut buf, &schema).unwrap(); let id_array = StringArray::from(vec!["BBBBBBBB".to_string()]); let batch = RecordBatch::try_new( Arc::new(schema), vec![Arc::new(id_array)] ).unwrap(); arrow_writer.write(&batch).unwrap(); arrow_writer.finish().unwrap(); } buf } ` -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
