[KAFKA-10824] Connection to node -1 could not be established. Broker may not be available.

• Type: Bug
• Status: Open
• Priority: Blocker
• Resolution: Unresolved
• Affects Version/s: 2.0.0, 2.1.1
• Component/s: consumer, network, offset manager
• Assignee: lqjacklee
• Reporter: Mohammad Abboud
• Created: 08/Dec/20 10:05
• Updated: 07/Jan/21 19:07

Description

After a specific running time, the consumer groups will become inactive, while trying to reset the offsets, I get the message "Connection to node -1 could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)".

My work around is to delete all the consumer_offsets folders and restart the server.

below is the content of server.properties:

listeners=PLAINTEXT://0.0.0.0:9092

advertised.listeners=PLAINTEXT://Server01:9092