David Jacot created KAFKA-16118:
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Summary: Coordinator unloading fails when replica is deleted
Key: KAFKA-16118
URL: https://issues.apache.org/jira/browse/KAFKA-16118
Project: Kafka
Issue Type: Sub-task
Reporter: David Jacot
Assignee: David Jacot
The new group coordinator always expects the leader epoch to be received when
it must unload the metadata for a partition. However, in KRaft, the leader
epoch is not passed when the replica is delete (e.g. after reassignment).
{noformat}
java.lang.IllegalArgumentException: The leader epoch should always be provided
in KRaft.
at
org.apache.kafka.coordinator.group.GroupCoordinatorService.onResignation(GroupCoordinatorService.java:931)
at
kafka.server.metadata.BrokerMetadataPublisher.$anonfun$onMetadataUpdate$9(BrokerMetadataPublisher.scala:200)
at
kafka.server.metadata.BrokerMetadataPublisher.$anonfun$onMetadataUpdate$9$adapted(BrokerMetadataPublisher.scala:200)
at
kafka.server.metadata.BrokerMetadataPublisher.$anonfun$updateCoordinator$4(BrokerMetadataPublisher.scala:397)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at
kafka.server.metadata.BrokerMetadataPublisher.updateCoordinator(BrokerMetadataPublisher.scala:396)
at
kafka.server.metadata.BrokerMetadataPublisher.$anonfun$onMetadataUpdate$7(BrokerMetadataPublisher.scala:200)
at
kafka.server.metadata.BrokerMetadataPublisher.onMetadataUpdate(BrokerMetadataPublisher.scala:186)
at
org.apache.kafka.image.loader.MetadataLoader.maybePublishMetadata(MetadataLoader.java:382)
at
org.apache.kafka.image.loader.MetadataBatchLoader.applyDeltaAndUpdate(MetadataBatchLoader.java:286)
at
org.apache.kafka.image.loader.MetadataBatchLoader.maybeFlushBatches(MetadataBatchLoader.java:222)
at
org.apache.kafka.image.loader.MetadataLoader.lambda$handleCommit$1(MetadataLoader.java:406)
at
org.apache.kafka.queue.KafkaEventQueue$EventContext.run(KafkaEventQueue.java:127)
at
org.apache.kafka.queue.KafkaEventQueue$EventHandler.handleEvents(KafkaEventQueue.java:210)
at
org.apache.kafka.queue.KafkaEventQueue$EventHandler.run(KafkaEventQueue.java:181)
at java.base/java.lang.Thread.run(Thread.java:1583)
at
org.apache.kafka.common.utils.KafkaThread.run(KafkaThread.java:66){noformat}
The side effect of this bug is that group coordinator loading/unloading fails.
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