LiuGuH opened a new pull request, #6502:
URL: https://github.com/apache/hadoop/pull/6502
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### Description of PR
JIRA: [HDFS-17357](https://issues.apache.org/jira/browse/HDFS-17357)
NioInetPeer.close() now do not close socket connection.
In my environment，all data were stored with EC.
And I found 3w+ connections leakage in datanode . And I found many warn
message as blew.
2024-01-22 15:27:57,500 WARN
org.apache.hadoop.hdfs.server.datanode.DataNode:
hostname:50010:DataXceiverServer
When any Exception is found in DataXceiverServer, it will execute
clostStream.
IOUtils.closeStream(peer) -> Peer.close() -> NioInetPeer.close()
But NioInetPeer.close() is not invoked with close socket connection. And
this will lead to connection leakage.
And Other subClass of Peer's close() is implemented with socket.close().
See EncryptedPeer, DomainPeer, BasicInetPeer
### How was this patch tested?
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