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https://issues.apache.org/jira/browse/BEAM-5197?focusedWorklogId=169774&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-169774
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ASF GitHub Bot logged work on BEAM-5197:
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Author: ASF GitHub Bot
Created on: 27/Nov/18 13:27
Start Date: 27/Nov/18 13:27
Worklog Time Spent: 10m
Work Description: mxm commented on issue #7138: [BEAM-5197] Increase test
time progressing interval to avoid deadlock
URL: https://github.com/apache/beam/pull/7138#issuecomment-442057416
I observed that this would fail even on MacOs with a small enough wait
interval, e.g. 10 milliseconds. The lock is not held while sleeping but the
wait interval is small enough that the source thread may not acquire the locker
fast enough before it is acquired again by the test.
Would appreciate if someone with Linux could verify this.
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Issue Time Tracking
-------------------
Worklog Id: (was: 169774)
Time Spent: 3h (was: 2h 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: 3h
> 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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