[HADOOP-18628] Server connection should log host name before returning VersionMismatch error

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.4
• Fix Version/s: 3.4.0, 3.3.6
• Component/s: ipc
• Labels: pull-request-available
• Target Version/s: 3.4.0, 3.3.6
• Hadoop Flags: Reviewed
• Assignee: Viraj Jasani
• Reporter: Viraj Jasani
• Created: 11/Feb/23 05:03
• Updated: 27/Jan/24 08:43
• Resolved: 14/Feb/23 11:50

Description

In env with dynamically changing IP addresses, debugging issue with the logs with only IP address becomes a bit difficult at times.

2023-02-08 23:26:50,112 WARN  [Socket Reader #1 for port 8485] ipc.Server - Incorrect RPC Header length from {IPV4}:36556 expected length: java.nio.HeapByteBuffer[pos=0 lim=4 cap=4] got length: java.nio.HeapByteBuffer[pos=0 lim=4 cap=4] 

It would be better to log full hostname for the given IP address rather than only IP address.

Issue Links

• breaks: HDFS-16925 Namenode audit log to only include IP address of client
• links to: GitHub Pull Request #5385
• links to: GitHub Pull Request #5395