Two threads named pool-1-thread-1 and pool-2-thread-1 remains after the 
shutdown of a cluster
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                 Key: HBASE-5025
                 URL: https://issues.apache.org/jira/browse/HBASE-5025
             Project: HBase
          Issue Type: Bug
          Components: ipc, test
    Affects Versions: 0.94.0
            Reporter: nkeywal
            Priority: Minor


There are two issues with these threads:
 - there should have a better name.  pool-x-thread-y is the default name given 
by java.util.concurrent.Executors
 - these threads should not survive to a minicluster shutdown

They are created by org.apache.hadoop.ipc.Server$Listener (with version 
0.20.205.0; the code was different before), so the first issue is a hadoop 
common one. It's unclear for the second one, it could be hadoop-common as well. 

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