kylebarron opened a new issue, #6415: URL: https://github.com/apache/arrow-rs/issues/6415
**Describe the bug** The line here: https://github.com/apache/arrow-rs/blob/5414f1d7c0683c64d69cf721a83c17d677c78a71/arrow-ipc/src/convert.rs#L98 panics ``` panicked at /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/arrow-ipc-53.0.0/src/convert.rs:98:30: called `Option::unwrap()` on a `None` value ``` on list array data created by Arrow JavaScript, which does not have a name field set. The name [is not required to be set](https://docs.rs/arrow-ipc/latest/arrow_ipc/gen/Schema/struct.Field.html#method.name). **To Reproduce** This JavaScript code creates this IPC buffer (output data here: [data.arrows.zip](https://github.com/user-attachments/files/17047057/data.arrows.zip)) ```js import { tableFromArrays, tableToIPC } from "apache-arrow" import { Table } from "parquet-wasm" const table = tableFromArrays({ column: [[1, 2], [3, 4]], }) const ipc = tableToIPC(table, "stream") // This loads the IPC buffer using arrow-rs Table.fromIPCStream(ipc) ``` Loading this with pyarrow, we see that the inner list field has no name set (which pyarrow infers as an empty string) ```py In [1]: import pyarrow as pa In [3]: pa.ipc.open_stream("data.arrows").read_all() Out[3]: pyarrow.Table column: list<: double> child 0, : double ---- column: [[[1,2],[3,4]]] ``` **Expected behavior** IPC Reader should not panic. **Additional context** Originally reported in https://github.com/kylebarron/parquet-wasm/issues/606 -- 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]
