Sebastian Straub created SPARK-30270:
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Summary: Can't pickle abstract classes (with cloudpickle)
Key: SPARK-30270
URL: https://issues.apache.org/jira/browse/SPARK-30270
Project: Spark
Issue Type: Bug
Components: PySpark
Affects Versions: 2.4.4
Reporter: Sebastian Straub
I can't use any classes that are derived from abstract classes in PySpark,
because cloudpickle can't pickle them. Example:
{code:java}
import pickle
from abc import ABC
from pyspark import cloudpickle
class Foo(ABC):
pass
class Bar(Foo):
pass
bar = Bar()
# pickle dump works fine
pickle.dumps(bar)
# cloudpickle doesn't
cloudpickle.dumps(bar)
{code}
A similar bug has already been reported in SPARK-21439 and marked resolved, but
I can confirm that the issue still persists.
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