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https://issues.apache.org/jira/browse/FLINK-3627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-3627:
----------------------------------
Labels: auto-deprioritized-major hang stale-minor (was:
auto-deprioritized-major hang)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is
still Minor, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Task stuck on lock in StreamSource when cancelling
> --------------------------------------------------
>
> Key: FLINK-3627
> URL: https://issues.apache.org/jira/browse/FLINK-3627
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Reporter: Jamie Grier
> Priority: Minor
> Labels: auto-deprioritized-major, hang, stale-minor
>
> I've seen this occur a couple of times when the # of network buffers is set
> too low. The job fails with the an appropriate message indicating that the
> user should increase the # of network buffers. However, some of the task
> threads then hang with a stack trace similar to the following.
> 2016-03-16 13:38:54,017 WARN org.apache.flink.runtime.taskmanager.Task
> - Task 'Source: EventGenerator -> (Flat Map, blah -> Filter ->
> Projection -> Flat Map -> Timestamps/Watermarks -> Map) (46/144)' did not
> react to cancelling signal, but is stuck in method:
>
> org.apache.flink.streaming.api.operators.StreamSource$ManualWatermarkContext.collect(StreamSource.java:317)
> flink.benchmark.generator.LoadGeneratorSource.run(LoadGeneratorSource.java:38)
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:78)
> org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:56)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:224)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
> java.lang.Thread.run(Thread.java:745)
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