[KAFKA-14080] too many node disconnected message in kafka-clients

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.1
• Component/s: clients
• Assignee: Unassigned
• Reporter: rui
• Created: 18/Jul/22 04:11
• Updated: 14/Oct/22 16:39

Description

when upgrade kafka-clients from 3.0.1 to 3.1.1, there are a lot of "Node 0 disconnected" message in networkclient  per day per listener(20-30k)
think it is introduced by

https://github.com/a0x8o/kafka/commit/cf22405663ec7854bde7eaa3f22b9818c276563f

questions:

1. is it normal with so many "Node X disconnected" message at INFO level? my kafka server has any issue?
2. it mentioned a back-off configuration to reduce the message, but does it work?(still so many messages)

Issue Links

• duplicates: KAFKA-13679 Superfluous node disconnected log messages