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https://issues.apache.org/jira/browse/BEAM-5617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16657654#comment-16657654
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Valentyn Tymofieiev commented on BEAM-5617:
-------------------------------------------
I've been examining the execution path for test_iterable_side_input on Python 3
and comparing it Python 2 by looking at call stack. With the help of
'sys.setprofile()' I intercepted each function call, and printed a
function/method name, arguments, return value and the caller.
The first location I noticed where execution starts to diverge is in
pickler.py[1], sending https://github.com/apache/beam/pull/6764. The test still
does not pass though.
https://github.com/apache/beam/blob/bd8ff7c63768c266ef03b9ad026ac1649e958ed2/sdks/python/apache_beam/internal/pickler.py#L58
> Several tests fail on Python 3 with failed assert: <some non-empty list> == []
> ------------------------------------------------------------------------------
>
> Key: BEAM-5617
> URL: https://issues.apache.org/jira/browse/BEAM-5617
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Valentyn Tymofieiev
> Assignee: Valentyn Tymofieiev
> Priority: Major
> Time Spent: 20m
> Remaining Estimate: 0h
>
> ======================================================================
> ERROR: test_iterable_side_input
> (apache_beam.transforms.sideinputs_test.SideInputsTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File
> "/usr/local/google/home/valentyn/projects/beam/clean_head/beam/sdks/python/apache_beam/runners/common.py",
> line 677, in process
> self.do_fn_invoker.invoke_process(windowed_value)
> File
> "/usr/local/google/home/valentyn/projects/beam/clean_head/beam/sdks/python/apache_beam/runners/common.py",
> line 414, in invoke_process
> windowed_value, self.process_method(windowed_value.value))
> File
> "/usr/local/google/home/valentyn/projects/beam/clean_head/beam/sdks/python/apache_beam/transforms/core.py",
> line 1068, in <lambda>
> wrapper = lambda x: [fn(x)]
> File
> "/usr/local/google/home/valentyn/projects/beam/clean_head/beam/sdks/python/apache_beam/testing/util.py",
> line 119, in _equal
> 'Failed assert: %r == %r' % (sorted_expected, sorted_actual))
> apache_beam.testing.util.BeamAssertException: Failed assert: [3, 4, 6, 8] ==
> []
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