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Posted to issues@spark.apache.org by "Oliver Mannion (Jira)" <ji...@apache.org> on 2021/08/11 07:31:00 UTC

[jira] [Commented] (SPARK-36476) cloudpickle: ValueError: Cell is empty

    [ https://issues.apache.org/jira/browse/SPARK-36476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17397126#comment-17397126 ] 

Oliver Mannion commented on SPARK-36476:
----------------------------------------

Looks like a similar issue raised here https://github.com/cloudpipe/cloudpickle/issues/393

> cloudpickle: ValueError: Cell is empty
> --------------------------------------
>
>                 Key: SPARK-36476
>                 URL: https://issues.apache.org/jira/browse/SPARK-36476
>             Project: Spark
>          Issue Type: Bug
>          Components: PySpark
>    Affects Versions: 3.1.2
>            Reporter: Oliver Mannion
>            Priority: Major
>
> {code:java}
>   File "/Users/tekumara/code/awesome-spark-app/.venv/lib/python3.7/site-packages/pyspark/serializers.py", line 437, in dumps
>     return cloudpickle.dumps(obj, pickle_protocol)
>   File "/Users/tekumara/code/awesome-spark-app/.venv/lib/python3.7/site-packages/pyspark/cloudpickle/cloudpickle_fast.py", line 101, in dumps
>     cp.dump(obj)
>   File "/Users/tekumara/code/awesome-spark-app/.venv/lib/python3.7/site-packages/pyspark/cloudpickle/cloudpickle_fast.py", line 540, in dump
>     return Pickler.dump(self, obj)
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 437, in dump
>     self.save(obj)
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 504, in save
>     f(self, obj) # Call unbound method with explicit self
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 789, in save_tuple
>     save(element)
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 504, in save
>     f(self, obj) # Call unbound method with explicit self
>   File "/Users/tekumara/code/awesome-spark-app/.venv/lib/python3.7/site-packages/pyspark/cloudpickle/cloudpickle_fast.py", line 722, in save_function
>     *self._dynamic_function_reduce(obj), obj=obj
>   File "/Users/tekumara/code/awesome-spark-app/.venv/lib/python3.7/site-packages/pyspark/cloudpickle/cloudpickle_fast.py", line 659, in _save_reduce_pickle5
>     dictitems=dictitems, obj=obj
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 638, in save_reduce
>     save(args)
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 504, in save
>     f(self, obj) # Call unbound method with explicit self
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 789, in save_tuple
>     save(element)
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 504, in save
>     f(self, obj) # Call unbound method with explicit self
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 774, in save_tuple
>     save(element)
>   File "/Users/tekumara/.pyenv/versions/3.7.9/lib/python3.7/pickle.py", line 504, in save
>     f(self, obj) # Call unbound method with explicit self
>   File "/Users/tekumara/code/awesome-spark-app/.venv/lib/python3.7/site-packages/dill/_dill.py", line 1226, in save_cell
>     f = obj.cell_contents
> ValueError: Cell is empty
> {code}
> Doesn't occur in Spark 3.0.0, so possibly introduced when cloudpickle was upgraded to 1.5.0 (see https://issues.apache.org/jira/browse/SPARK-32094).
> Also doesn't occur in Spark 3.1.2 with python 3.8.
>  



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