[QST] Invitation to provide feedback on New Parquet Encoding: Adaptive Lossless Floating Point Compression

👋 from the Parquet community

The Parquet community is working on a proposal to implement [ALP: Adaptive Lossless floating-Point Compression, (SIGMOD 2024)](https://dl.acm.org/doi/10.1145/3626717) as a new Parquet encoding

cuDF is listed on the [Parquet Implementation Status](https://parquet.apache.org/docs/file-format/implementationstatus/) page

Since you may feel pressure to implement newly added encodings, I think having your feedback on the spec as a stakeholder would be immensely valuable.

Also, I believe you can help us understand if the encoding can be efficiently implemented on GPUs, which is an important consideration

The proposed addition is here : [Parquet ALP Encoding Specification](https://docs.google.com/document/d/1xz2cudDpN2Y1ImFcTXh15s-3fPtD_aWt/edit) (Google Doc)

There is also a prototype C++ implementation for review here
- https://github.com/apache/arrow/pull/48345

See also: [mailing list discussion (link)](https://lists.apache.org/thread/tjtln1mmjqfoql1ls2dw9xpdk91r1909) and [parquet-format PR](https://github.com/apache/parquet-format/pull/548)

Thank you for your consideration