David Arthur created KAFKA-16539:
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Summary: Can't update specific broker configs in pre-migration mode
Key: KAFKA-16539
URL: https://issues.apache.org/jira/browse/KAFKA-16539
Project: Kafka
Issue Type: Bug
Components: config, kraft
Affects Versions: 3.6.2, 3.6.1, 3.7.0, 3.6.0
Reporter: David Arthur
Assignee: David Arthur
Fix For: 3.8.0, 3.7.1, 3.6.3
In migration mode, ZK brokers will have a forwarding manager configured. This
is used to forward requests to the KRaft controller once we get to that part of
the migration. However, prior to KRaft taking over as the controller (known as
pre-migration mode), the ZK brokers are still attempting to forward
IncrementalAlterConfigs to the controller.
This works fine for cluster level configs (e.g., "--entity-type broker
--entity-default"), but this fails for specific broker configs (e.g.,
"--entity-type broker --entity-id 1").
This affects BROKER and BROKER_LOGGER config types.
To workaround this bug, you can either disable migrations on the brokers
(assuming no migration has taken place), or proceed with the migration and get
to the point where KRaft is the controller.
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