Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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3.6.1
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None
Description
I tried the following scenario ...
I have a ZooKeeper-based cluster and create a my-topic-1 topic (without specifying any specific configuration for it). The correct znodes are created under /config/topics and /brokers/topics.
I start a migration to KRaft but not moving forward from "dual write" mode. While in this mode, I create a new my-topic-2 topic (still without any specific config). I see that a new znode is created under /brokers/topics but NOT under /config/topics. It seems that the KRaft controller is not updating this information in ZooKeeper during the dual-write. The controller log shows that the write to ZooKeeper was done, but not everything I would say:
2023-12-13 10:23:26,229 TRACE [KRaftMigrationDriver id=3] Create Topic my-topic-2, ID Macbp8BvQUKpzmq2vG_8dA. Transitioned migration state from ZkMigrationLeadershipState{kraftControllerId=3, kraftControllerEpoch=7, kraftMetadataOffset=445, kraftMetadataEpoch=7, lastUpdatedTimeMs=1702462785587, migrationZkVersion=236, controllerZkEpoch=3, controllerZkVersion=3} to ZkMigrationLeadershipState{kraftControllerId=3, kraftControllerEpoch=7, kraftMetadataOffset=445, kraftMetadataEpoch=7, lastUpdatedTimeMs=1702462785587, migrationZkVersion=237, controllerZkEpoch=3, controllerZkVersion=3} (org.apache.kafka.metadata.migration.KRaftMigrationDriver) [controller-3-migration-driver-event-handler]
2023-12-13 10:23:26,229 DEBUG [KRaftMigrationDriver id=3] Made the following ZK writes when handling KRaft delta: {CreateTopic=1} (org.apache.kafka.metadata.migration.KRaftMigrationDriver) [controller-3-migration-driver-event-handler]
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