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https://issues.apache.org/jira/browse/FLINK-20957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-20957:
-----------------------------------
    Labels: pull-request-available test-stability  (was: test-stability)

> StreamTaskTest.testProcessWithUnAvailableOutput unstable
> --------------------------------------------------------
>
>                 Key: FLINK-20957
>                 URL: https://issues.apache.org/jira/browse/FLINK-20957
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Task
>    Affects Versions: 1.13.0
>            Reporter: Till Rohrmann
>            Assignee: Piotr Nowojski
>            Priority: Critical
>              Labels: pull-request-available, test-stability
>             Fix For: 1.13.0
>
>
> The {{StreamTaskTest.testProcessWithUnAvailableOutput}} fails on AZP. 
> {code}
> [ERROR] 
> testProcessWithUnAvailableOutput(org.apache.flink.streaming.runtime.tasks.StreamTaskTest)
>   Time elapsed: 0.145 s  <<< FAILURE!
> java.lang.AssertionError: 
> Expected: a value equal to or greater than <42L>
>      but: <41L> was less than <42L>
>       at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
>       at org.junit.Assert.assertThat(Assert.java:956)
>       at org.junit.Assert.assertThat(Assert.java:923)
>       at 
> org.apache.flink.streaming.runtime.tasks.StreamTaskTest.testProcessWithUnAvailableOutput(StreamTaskTest.java:1333)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>       at 
> org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
>       at 
> org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>       at java.lang.Thread.run(Thread.java:748)
> {code}
> cc [~pnowojski]



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