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https://issues.apache.org/jira/browse/BEAM-5197?focusedWorklogId=169600&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-169600
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ASF GitHub Bot logged work on BEAM-5197:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 27/Nov/18 03:17
            Start Date: 27/Nov/18 03:17
    Worklog Time Spent: 10m 
      Work Description: kennknowles commented on issue #7136: [BEAM-5197] 
Increase timeouts for UnboundedSourceWrapperTest
URL: https://github.com/apache/beam/pull/7136#issuecomment-441885543
 
 
   In the gradle scan I see it takes a fraction of a second. So my expectation 
is that there is some deadlock, race, or crash loop that I have not 
investigated. I would not necessarily expect this timeout increase to work. It 
did work this time...

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 169600)
    Time Spent: 1h  (was: 50m)

> Flaky test: UnboundedSourceWrapperTest$ParameterizedUnboundedSourceWrapperTest
> ------------------------------------------------------------------------------
>
>                 Key: BEAM-5197
>                 URL: https://issues.apache.org/jira/browse/BEAM-5197
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-flink
>            Reporter: Thomas Weise
>            Assignee: Kenneth Knowles
>            Priority: Critical
>              Labels: flake
>             Fix For: 2.10.0
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> {code:java}
> java.lang.NullPointerException
>       at 
> org.apache.flink.streaming.runtime.tasks.TestProcessingTimeService$1.compare(TestProcessingTimeService.java:52)
>       at 
> org.apache.flink.streaming.runtime.tasks.TestProcessingTimeService$1.compare(TestProcessingTimeService.java:49)
>       at java.util.PriorityQueue.siftUpUsingComparator(PriorityQueue.java:670)
>       at java.util.PriorityQueue.siftUp(PriorityQueue.java:646)
>       at java.util.PriorityQueue.offer(PriorityQueue.java:345)
>       at 
> org.apache.flink.streaming.runtime.tasks.TestProcessingTimeService.registerTimer(TestProcessingTimeService.java:93)
>       at 
> org.apache.beam.runners.flink.translation.wrappers.streaming.io.UnboundedSourceWrapper.setNextWatermarkTimer(UnboundedSourceWrapper.java:452)
>       at 
> org.apache.beam.runners.flink.translation.wrappers.streaming.io.UnboundedSourceWrapper.run(UnboundedSourceWrapper.java:225)
>       at 
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:87)
>       at 
> org.apache.beam.runners.flink.streaming.UnboundedSourceWrapperTest$ParameterizedUnboundedSourceWrapperTest.testValueEmission(UnboundedSourceWrapperTest.java:153)
>       {code}



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