Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/18734
Yea, it looks so. Named tuple one reminds me of the workaround we have for
named tuple to make picklable -
https://github.com/apache/spark/blob/d03aebbe6508ba441dc87f9546f27aeb27553d77/python/pyspark/serializers.py#L395-L446
Maybe, we could take a look and see if we could get rid of this or port
this. Anyway, let me take a final look.
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