David Arthur created KAFKA-15109: ------------------------------------ Summary: ISR not expanding on ZK brokers during migration Key: KAFKA-15109 URL: https://issues.apache.org/jira/browse/KAFKA-15109 Project: Kafka Issue Type: Bug Components: kraft, replication Affects Versions: 3.5.0 Reporter: David Arthur
KAFKA-15021 introduced a new controller behavior that avoids increasing the leader epoch during the controlled shutdown scenario. This prevents some unnecessary thrashing of metadata and threads on the brokers and clients. While a cluster is in a KIP-866 migration and has a KRaft controller with ZK brokers, we cannot employ this leader epoch bump avoidance. The ZK brokers must have the leader epoch bump in order for the ISR expansion to complete. -- This message was sent by Atlassian Jira (v8.20.10#820010)