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https://issues.apache.org/jira/browse/FLINK-7354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110975#comment-16110975
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Nico Kruber commented on FLINK-7354:
------------------------------------
this may be related to / resolved similarly to SOLR-10098
> 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: 1.1.4, 1.2.1, 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
> Test environment: Debian 9, openjdk 1.8.0_141-8u141-b15-1~deb9u1-b15
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