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https://issues.apache.org/jira/browse/FLINK-4397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15421236#comment-15421236
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Stephan Ewen commented on FLINK-4397:
-------------------------------------
The metric registry looks non-suspicious. Could be that the JMX reporter is not
thread safe because of some internal JVM logic, but that is just guessing.
I think we would need to increase the timeout to actually get the stack trace
logger to report were in shutdown the threads are stuck.
> Unstable test SlotCountExceedingParallelismTest.tearDown
> --------------------------------------------------------
>
> Key: FLINK-4397
> URL: https://issues.apache.org/jira/browse/FLINK-4397
> Project: Flink
> Issue Type: Bug
> Reporter: Kostas Kloudas
> Labels: test-stability
>
> An instance can be found here:
> https://s3.amazonaws.com/archive.travis-ci.org/jobs/152392524/log.txt
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