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From "Thomas Weise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-1140) Apex ParDoBoundTranslatorTest.testMultiOutputParDoWithSideInputs is flaky
Date Tue, 03 Jan 2017 04:10:58 GMT

    [ https://issues.apache.org/jira/browse/BEAM-1140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15794073#comment-15794073
] 

Thomas Weise commented on BEAM-1140:
------------------------------------

I was able to reproduce on a VM. 

{code}
Failed tests:
  ParDoBoundTranslatorTest.testMultiOutputParDoWithSideInputs:307 expected:<[processing:
-42: [11, 222], processing: 3: [11, 222], processing: 666: [11, 222]]> but was:<[processing:
-42: [11, 222], processing: 3: [11, 222]]>
{code}

When the test fails, input 666 was read, but never processed by the MultiOutputParDo, because
the topology gets terminated before. I cannot see any issue in the runner code, so need to
look at this further at the Apex level. I suspect it is the same issue that also manifests
in other flaky tests.
 

> Apex ParDoBoundTranslatorTest.testMultiOutputParDoWithSideInputs is flaky
> -------------------------------------------------------------------------
>
>                 Key: BEAM-1140
>                 URL: https://issues.apache.org/jira/browse/BEAM-1140
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-apex
>            Reporter: Eugene Kirpichov
>            Assignee: Thomas Weise
>
> The test fails about one in 10-20 times or so when run in "Run until failure" mode in
IntelliJ (I did it 3 times; once it failed on the 3rd run, once on the 15th, once on the 40th).
> It's making precommits unstable (e.g. currently https://github.com/apache/incubator-beam/pull/1565
failed with this test error).
> Unfortunately I don't understand enough about the Apex runner to understand what's going
on and fix this myself...



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