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https://issues.apache.org/jira/browse/FLINK-3266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110349#comment-15110349
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Gabor Gevay commented on FLINK-3266:
------------------------------------
They have names like `ForkJoinPool-168-worker-3` and `Timer-13`. Here is a
thread dump:
http://pastebin.com/h807AcHH
> LocalFlinkMiniCluster leaks resources when multiple jobs are submitted
> ----------------------------------------------------------------------
>
> Key: FLINK-3266
> URL: https://issues.apache.org/jira/browse/FLINK-3266
> Project: Flink
> Issue Type: Bug
> Components: Local Runtime
> Affects Versions: 1.0.0
> Reporter: Gabor Gevay
> Priority: Minor
>
> After a job submitted to a LocalEnvironment finishes, some threads are not
> stopped, and are stuck in waiting forever.
> You can observe this, if you enclose the body of the main function of the
> WordCount example with a loop that executes 100 times, and monitor the thread
> count (with VisualVM for example).
> (The problem only happens if I use a mini cluster. If I use start-local.sh
> and submit jobs to it, then there is no leak.)
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