Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/16429
@holdenk, Yup. (actually, it is cloudpipe/cloudpickle@cbd3f34 because there
were more minor fixes). It seems there are several customized codes such as
injecting `numpy` as below:
```python
def inject_numpy(self):
numpy = sys.modules.get('numpy')
if not numpy or not hasattr(numpy, 'ufunc'):
return
self.dispatch[numpy.ufunc] = self.__class__.save_ufunc
```
So, I tried to take out the valid changes from there for now.
I also agree with using it as a thirdparty library if possible. That would
be bigger job than this though because we now have a quite lot of customized
codes there.
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