[HADOOP-18433] Fix main thread name.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.4.0, 3.3.6
• Component/s: common, ipc
• Labels: pull-request-available
• Target Version/s: 3.4.0, 3.3.6
• Hadoop Flags: Reviewed
• Assignee: Chenyu Zheng
• Reporter: Chenyu Zheng
• Created: 31/Aug/22 08:32
• Updated: 28/Jan/24 00:11
• Resolved: 09/Nov/22 11:20

Description

The server's main thread is "Listener at ${hostname}/9000", it is confused easily. We can see the main thread like below.

"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)
 

Issue Links

• links to: GitHub Pull Request #4838
• links to: GitHub Pull Request #5692