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https://issues.apache.org/jira/browse/BEAM-8837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on BEAM-8837 started by Ning Kang.
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> PCollectionVisualizationTest: possible bug
> ------------------------------------------
>
> Key: BEAM-8837
> URL: https://issues.apache.org/jira/browse/BEAM-8837
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core
> Reporter: Udi Meiri
> Assignee: Ning Kang
> Priority: Major
>
> This seems like a bug, even though the test passes:
> {code}
> test_display_plain_text_when_kernel_has_no_frontend
> (apache_beam.runners.interactive.display.pcoll_visualization_test.PCollectionVisualizationTest)
> ... Exception in thread Thread-4405:
> Traceback (most recent call last):
> File "/usr/lib/python3.7/threading.py", line 926, in _bootstrap_inner
> self.run()
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/.eggs/timeloop-1.0.2-py3.7.egg/timeloop/job.py",
> line 19, in run
> self.execute(*self.args, **self.kwargs)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/runners/interactive/display/pcoll_visualization.py",
> line 132, in continuous_update_display
> updated_pv.display_facets(updating_pv=pv)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/runners/interactive/display/pcoll_visualization.py",
> line 209, in display_facets
> data = self._to_dataframe()
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/runners/interactive/display/pcoll_visualization.py",
> line 278, in _to_dataframe
> for el in self._to_element_list():
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/runners/interactive/display/pcoll_visualization.py",
> line 266, in _to_element_list
> if ie.current_env().cache_manager().exists('full', self._cache_key):
> AttributeError: 'NoneType' object has no attribute 'exists'
> ok
> {code}
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