Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/1623#issuecomment-50449220
Is there a way to do this that doesn't require PySpark to be imported
before the namedtuples are created? Can you directly replace the `__reduce__`
method on the `namedtuple` class? Alternatively, maybe you can register a new
`__reduce__` method using
[copy_reg](https://docs.python.org/2/library/copy_reg.html). Cloudpickle
doesn't use `copy_reg.pickle()` directly, so the actual fix might be
lower-level.
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