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https://issues.apache.org/jira/browse/FLINK-4052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann updated FLINK-4052:
---------------------------------
    Affects Version/s: 1.3.0

> Unstable test ConnectionUtilsTest
> ---------------------------------
>
>                 Key: FLINK-4052
>                 URL: https://issues.apache.org/jira/browse/FLINK-4052
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.0.2, 1.3.0
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>            Priority: Critical
>              Labels: test-stability
>             Fix For: 1.1.0
>
>
> The error is the following:
> {code}
> ConnectionUtilsTest.testReturnLocalHostAddressUsingHeuristics:59 
> expected:<testing-worker-linux-docker-e744e561-3361-linux-13/172.17.5.9> but 
> was:</127.0.0.1>
> {code}
> The probable cause for the failure is that the test tries to select an unused 
> closed port (from the ephemeral range), and then assumes that all connections 
> to that port fail.
> If a concurrent test actually uses that port, connections to the port will 
> succeed.



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