David Arthur created KAFKA-14697:
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Summary: KRaft controller should not send LISR to KRaft brokers
during migration
Key: KAFKA-14697
URL: https://issues.apache.org/jira/browse/KAFKA-14697
Project: Kafka
Issue Type: Bug
Components: kraft
Affects Versions: 3.4.0
Reporter: David Arthur
Fix For: 3.5.0, 3.4.1
Attachments: test_online_migration.tar.gz
During a migration, after a broker is restarted in KRaft mode the KRaft
controller is still sending it LISR as if it were a ZK broker. This results in
errors like:
{code}
[2023-02-09 14:53:26,892] ERROR Closing socket for
172.19.0.4:9092-172.19.0.9:32876-0 because of error (kafka.network.Processor)
org.apache.kafka.common.errors.InvalidRequestException: Received request api
key LEADER_AND_ISR which is not enabled
{code}
This can be observed by running the
kafkatest.tests.core.zookeeper_migration_test.TestMigration.test_online_migration
ducktape test. Attached are logs from a local run of this test with --debug
set.
It seems these errors do not affect the consistency of metadata during the
migration, but the excessive LISR sent out will impact performance on large
clusters.
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