Function polars::export::arrow::io::parquet::read::read_metadata_async

pub async fn read_metadata_async<R>(
    reader: &'_ mut R
) -> Result<FileMetaData, ArrowError> where
    R: AsyncRead + AsyncSeek + Send + Unpin, 

This is supported on crate feature io_parquet only.

Reads parquets’ metadata asynchronously.