[jira] [Created] (HADOOP-18433) Fix main thread name.

["zhengchenyu (Jira)" <ji...@apache.org>]

zhengchenyu created HADOOP-18433:
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             Summary: Fix main thread name.
                 Key: HADOOP-18433
                 URL: https://issues.apache.org/jira/browse/HADOOP-18433
             Project: Hadoop Common
          Issue Type: Improvement
          Components: common, ipc
    Affects Versions: 3.2.1
            Reporter: zhengchenyu


The server's main thread is "Listener at ${hostname}/9000", it is confused easily. We can see the main thread like below.
{code:java}
"Listener at ${hostname}/9000" #1 prio=5 os_prio=0 tid=0x00007f8068016000 nid=0x5c086 in Object.wait() [0x00007f806f1d4000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x00007f7552553010> (a org.apache.hadoop.ipc.ProtobufRpcEngine$Server)
    at java.lang.Object.wait(Object.java:502)
    at org.apache.hadoop.ipc.Server.join(Server.java:3449)
    - locked <0x00007f7552553010> (a org.apache.hadoop.ipc.ProtobufRpcEngine$Server)
    at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.join(NameNodeRpcServer.java:613)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.join(NameNode.java:1014)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1774)
 {code}



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