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Posted to issues@beam.apache.org by "Beam JIRA Bot (Jira)" <ji...@apache.org> on 2020/07/27 17:06:03 UTC
[jira] [Commented] (BEAM-6158) Using --save_main_session fails on
Python 3 when main module has invocations of superclass method using
'super' .
[ https://issues.apache.org/jira/browse/BEAM-6158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17165852#comment-17165852 ]
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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