[jira] [Created] (FLINK-12707) Close minicluster will cause memory leak when there are StreamTask closed abnormal

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

liuzhaokun created FLINK-12707:
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             Summary: Close minicluster will cause  memory leak when there are StreamTask closed abnormal
                 Key: FLINK-12707
                 URL: https://issues.apache.org/jira/browse/FLINK-12707
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
    Affects Versions: 1.8.0
            Reporter: liuzhaokun
            Assignee: liuzhaokun


There are several threads in my application,and every thread will launch a flink job with LocalStreamEnvironment/MiniCluster.But when I interrupt these threads again and again, I found there are many residue threads,and that caused a memory leak.
When I debug it,this message appears "Recipient[Actor[akka://flink/user/taskmanager_0#-584606215]] had already been terminated. Sender[null] sent the message of type "org.apache.flink.runtime.rpc.messages.LocalRpcInvocation". So I think
when flink close minicluster,TaskExecutor will be closed in the first place,and this operation will cause akka message which will close StreamTask abnormal.So the work thread will be more and more.
I call Thread sleep in my application to avoid this problem,any good suggestions?



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