David Arthur created KAFKA-15441:
------------------------------------
Summary: Broker sessions can time out during ZK migration
Key: KAFKA-15441
URL: https://issues.apache.org/jira/browse/KAFKA-15441
Project: Kafka
Issue Type: Bug
Affects Versions: 3.6.0
Reporter: David Arthur
Assignee: David Arthur
When a ZK to KRaft migration takes more than a few seconds to complete, the
sessions between the ZK brokers and the KRaft controller will expire. This
appears to be due to the heartbeat events being blocked in the purgatory on the
controller.
The side effect of this expiration is that after the metadata is migrated, the
KRaft controller will immediately fence all of the brokers and remove them from
ISRs. This leads to a mass leadership change that can cause large latency
spikes on the brokers.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
