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https://issues.apache.org/jira/browse/BEAM-9487?focusedWorklogId=596400&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-596400
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ASF GitHub Bot logged work on BEAM-9487:
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Author: ASF GitHub Bot
Created on: 13/May/21 23:10
Start Date: 13/May/21 23:10
Worklog Time Spent: 10m
Work Description: zhoufek commented on pull request #14780:
URL: https://github.com/apache/beam/pull/14780#issuecomment-840886028
Updated the tests to be closer to the other ones using the interactive
environment, but I don't think that it'll actually fix the problem.
Still, I think it is clear that the test is just flaky, and I'm pretty sure
it is related to multiple tests sharing the same global, mutable variable(s)
(unless tests aren't run in parallel?). Unfortunately, I can't seem to trigger
this locally and have run some py*-cloud at least a dozen times.
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Issue Time Tracking
-------------------
Worklog Id: (was: 596400)
Time Spent: 3h 50m (was: 3h 40m)
> GBKs on unbounded pcolls with global windows and no triggers should fail
> ------------------------------------------------------------------------
>
> Key: BEAM-9487
> URL: https://issues.apache.org/jira/browse/BEAM-9487
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Udi Meiri
> Assignee: Zachary Houfek
> Priority: P2
> Labels: EaseOfUse, starter
> Time Spent: 3h 50m
> Remaining Estimate: 0h
>
> This, according to "4.2.2.1 GroupByKey and unbounded PCollections" in
> https://beam.apache.org/documentation/programming-guide/.
> bq. If you do apply GroupByKey or CoGroupByKey to a group of unbounded
> PCollections without setting either a non-global windowing strategy, a
> trigger strategy, or both for each collection, Beam generates an
> IllegalStateException error at pipeline construction time.
> Example where this doesn't happen in Python SDK:
> https://stackoverflow.com/questions/60623246/merge-pcollection-with-apache-beam
> I also believe that this unit test should fail, since test_stream is
> unbounded, uses global window, and has no triggers.
> {code}
> def test_global_window_gbk_fail(self):
> with TestPipeline() as p:
> test_stream = TestStream()
> _ = p | test_stream | GroupByKey()
> {code}
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