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https://issues.apache.org/jira/browse/BEAM-6158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17165852#comment-17165852
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Beam JIRA Bot commented on BEAM-6158:
-------------------------------------
This issue is assigned but has not received an update in 30 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Using --save_main_session fails on Python 3 when main module has invocations
> of superclass method using 'super' .
> -----------------------------------------------------------------------------------------------------------------
>
> Key: BEAM-6158
> URL: https://issues.apache.org/jira/browse/BEAM-6158
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-harness
> Reporter: Mark Liu
> Assignee: Valentyn Tymofieiev
> Priority: P2
> Labels: stale-assigned
> Time Spent: 4h 10m
> Remaining Estimate: 0h
>
> A typical manifestation of this failure, which can be observed on several
> Beam examples:
> {noformat}
> Traceback (most recent call last):
> File "/usr/lib/python3.5/runpy.py", line 193, in _run_module_as_main
> "__main__", mod_spec)
> File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
> exec(code, run_globals)
> File
> "/usr/local/google/home/valentyn/tmp/r2.14.0_py3.5_env/lib/python3.5/site-packages/apache_beam/examples/complete/game/user_score.py",
> line 164, in <module>
> run()
> File
> "/usr/local/google/home/valentyn/tmp/r2.14.0_py3.5_env/lib/python3.5/site-packages/apache_beam/examples/complete/game/user_score.py",
> line 158, in run
> | 'WriteUserScoreSums' >> beam.io.WriteToText(args.output))
> File
> "/usr/local/google/home/valentyn/tmp/r2.14.0_py3.5_env/lib/python3.5/site-packages/apache_beam/pipeline.py",
> line 426, in __exit__
>
> self.run().wait_until_finish()
> File
> "/usr/local/google/home/valentyn/tmp/r2.14.0_py3.5_env/lib/python3.5/site-packages/apache_beam/runners/dataflow/dataflow_runner.py",
> line 1338, in wait_until_finish
> (self.state, getattr(self._runner, 'last_error_msg', None)), self)
> apache_beam.runners.dataflow.dataflow_runner.DataflowRuntimeException:
> Dataflow pipeline failed. State: FAILED, Error:
>
> Traceback (most recent call last):
> File
> "/usr/local/lib/python3.5/site-packages/dataflow_worker/batchworker.py", line
> 773, in run
> self._load_main_session(self.local_staging_directory)
> File
> "/usr/local/lib/python3.5/site-packages/dataflow_worker/batchworker.py", line
> 489, in _load_main_session
>
> pickler.load_session(session_file)
> File
> "/usr/local/lib/python3.5/site-packages/apache_beam/internal/pickler.py",
> line 280, in load_session
>
> return dill.load_session(file_path)
> File "/usr/local/lib/python3.5/site-packages/dill/_dill.py", line 410, in
> load_session
> module = unpickler.load()
> File "/usr/local/lib/python3.5/site-packages/dill/_dill.py", line 474, in
> find_class
> return StockUnpickler.find_class(self, module, name)
> AttributeError: Can't get attribute 'ParseGameEventFn' on <module
> 'dataflow_worker.start' from
> '/usr/local/lib/python3.5/site-packages/dataflow_worker/start.py'> {noformat}
>
> Note that the example has the following code [1]:
> {code:python}
> class ParseGameEventFn(beam.DoFn):
> def __init__(self):
> super(ParseGameEventFn, self).__init__()
> {code}
> https://github.com/apache/beam/blob/0325c360bef17a6673e2d43051e59174b8e5ccc9/sdks/python/apache_beam/examples/complete/game/user_score.py#L81
> +cc: [~tvalentyn] [~robertwb] [~altay]
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