Github user mstewart141 commented on the issue:
https://github.com/apache/spark/pull/20798
@HyukjinKwon thanks again. i've updated this PR to add documentation. I dug
pretty deep into the bigger issue around kwargs/partial functions, and you can
see what i did in the commit:
https://github.com/apache/spark/pull/20798/commits/969f9073ee06d2a5641f78247b75e30d9ad1679a
Basically, throughout the udf and arrow serialization code there is no
notion of kwargs as supported, making it more challenging than I anticipated to
wire everything together. Definitely not impossible, but not a small
undertaking either.
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