Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/20373#discussion_r163420127
--- Diff: python/pyspark/cloudpickle.py ---
@@ -420,20 +440,18 @@ def save_dynamic_class(self, obj):
from global modules.
"""
clsdict = dict(obj.__dict__) # copy dict proxy to a dict
- if not isinstance(clsdict.get('__dict__', None), property):
- # don't extract dict that are properties
- clsdict.pop('__dict__', None)
- clsdict.pop('__weakref__', None)
-
- # hack as __new__ is stored differently in the __dict__
- new_override = clsdict.get('__new__', None)
- if new_override:
- clsdict['__new__'] = obj.__new__
-
- # namedtuple is a special case for Spark where we use the
_load_namedtuple function
- if getattr(obj, '_is_namedtuple_', False):
- self.save_reduce(_load_namedtuple, (obj.__name__, obj._fields))
- return
+ clsdict.pop('__weakref__', None)
+
+ # On PyPy, __doc__ is a readonly attribute, so we need to include
it in
+ # the initial skeleton class. This is safe because we know that
the
+ # doc can't participate in a cycle with the original class.
+ type_kwargs = {'__doc__': clsdict.pop('__doc__', None)}
+
+ # If type overrides __dict__ as a property, include it in the type
kwargs.
+ # In Python 2, we can't set this attribute after construction.
+ __dict__ = clsdict.pop('__dict__', None)
+ if isinstance(__dict__, property):
+ type_kwargs['__dict__'] = __dict__
--- End diff --
BUG: Fix bug pickling namedtuple
https://github.com/cloudpipe/cloudpickle/commit/28070bba79cf71e5719ab8d7c1d6cbc72cd95a0c
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