[jira] [Created] (FLINK-7354) test instability in LocalFlinkMiniClusterITCase#testLocalFlinkMiniClusterWithMultipleTaskManagers

["Nico Kruber (JIRA)" <ji...@apache.org>]

Nico Kruber created FLINK-7354:
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             Summary: test instability in LocalFlinkMiniClusterITCase#testLocalFlinkMiniClusterWithMultipleTaskManagers
                 Key: FLINK-7354
                 URL: https://issues.apache.org/jira/browse/FLINK-7354
             Project: Flink
          Issue Type: Bug
          Components: Tests
    Affects Versions: 1.2.1, 1.1.4, 1.4.0, 1.3.2
            Reporter: Nico Kruber
            Assignee: Nico Kruber
            Priority: Critical


During {{mvn clean install}} on the 1.3.2 RC2, I found an inconsistently failing test at {{LocalFlinkMiniClusterITCase#testLocalFlinkMiniClusterWithMultipleTaskManagers}}:

{code}
testLocalFlinkMiniClusterWithMultipleTaskManagers(org.apache.flink.test.runtime.minicluster.LocalFlinkMiniClusterITCase)  Time elapsed: 34.978 sec  <<< FAILURE!
java.lang.AssertionError: Thread Thread[initialSeedUniquifierGenerator,5,main] was started by the mini cluster, but not shut down
        at org.junit.Assert.fail(Assert.java:88)
        at org.apache.flink.test.runtime.minicluster.LocalFlinkMiniClusterITCase.testLocalFlinkMiniClusterWithMultipleTaskManagers(LocalFlinkMiniClusterITCase.java:168)
{code}

Searching the web for that error yields one previous thread on the dev-list, so this seems to be valid for quite old versions of flink, too, but apparently, was never solved:
https://lists.apache.org/thread.html/07ce439bf6d358bd3139541b52ef6b8e8af249a27e09ae10b6698f81@%3Cdev.flink.apache.org%3E



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