[KAFKA-9189] Shutdown is blocked if connection to Zookeeper is lost

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 3.0.0
• Component/s: core
• Environment: Linux, Docker 19.03.4
• Assignee: Ismael Juma
• Reporter: Boris Granveaud
• Created: 14/Nov/19 16:41
• Updated: 19/Mar/21 18:57
• Resolved: 19/Mar/21 18:57

Description

We are using Kafka and Zookeeper in Docker swarm stacks. When we undeploy a stack, sometimes Kafka doesn't shutdown properly and is finally killed by Docker (thus leaving potentially corrupted files).

Here are the steps to reproduce (simple Docker, no swarm):

 

docker network create test
docker run -d --network test --name zk --rm zookeeper:3.5.6
docker run --network test --name kf --rm -e "KAFKA_ZOOKEEPER_CONNECT=zk:2181" -e "KAFKA_ADVERTISED_LISTENERS=INSIDE://:9091" -e "KAFKA_LISTENER_SECURITY_PROTOCOL_MAP=INSIDE:PLAINTEXT" -e "KAFKA_INTER_BROKER_LISTENER_NAME=INSIDE" confluentinc/cp-kafka:5.3.1

 

In another shell:

 

docker stop zk
docker stop kf

 

Issue Links

• links to: GitHub Pull Request #10361