IpcWriter with compression

[illumination-k]

I implemented with_compression in IPC Writer and its test related to #1539.
If necessary, I would like to expose the Python API.

[ritchie46]

If necessary, I would like to expose the Python API.

That would be great. :)

[ritchie46]

Already reviewed the Rust code. Looks good! 👍

[illumination-k]

Now parquet Compression is re-exported as Compression, it may occur conflicts with others. Maybe is it better to rename like ParquetCompression?

polars/polars/polars-io/src/parquet.rs

Line 194 in 4e6dea0

pub use write::Compression;

[ritchie46]

Now parquet Compression is re-exported as Compression, it may occur conflicts with others. Maybe is it better to rename like ParquetCompression?

polars/polars/polars-io/src/parquet.rs

Line 194 in 4e6dea0

pub use write::Compression;

Yes, I think that's a good idea. Maybe even create our own enums, so that we don't have an API break, when arrow2 adds an option.

[ritchie46]

Thanks a lot!