Is your feature request related to a problem or challenge? Please describe what you are trying to do.
The encoding / compression is most often the bottleneck for increasing the throughput of writing parquet files. Even though the actual writing of bytes must be done serially, the encoding could be done in parallel (into memory buffers) before the actual write

Describe the solution you'd like
I would like a way (either an explicit API or an example) that allows using multiple cores to write ArrowRecord batches to a file.

Note that trying to parallelize writes today results in corrupted parquet files, see #1717

Describe alternatives you've considered
There is a high level description of parallel decoding in @jorgecarleitao 's parquet2 https://github.com/jorgecarleitao/parquet2#higher-parallelism (focused on reading)

Additional context
Mailing list https://lists.apache.org/thread/rbhfwcpd6qfk52rtzm2t6mo3fhvdpc91

Also, #1711 is possibly related