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https://issues.apache.org/jira/browse/HADOOP-18433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17630319#comment-17630319
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ASF GitHub Bot commented on HADOOP-18433:
-----------------------------------------

ZanderXu commented on PR #4838:
URL: https://github.com/apache/hadoop/pull/4838#issuecomment-1306955991

   @zhengchenyu I got what you want to do. But I think we should correct the 
thread name of the `Listener` instead of deleting it.




> 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
>            Priority: Major
>              Labels: pull-request-available
>
> 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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