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https://issues.apache.org/jira/browse/KAFKA-4905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15983803#comment-15983803
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Matthias J. Sax commented on KAFKA-4905:
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[~stevenschlansker] I just stubbled over an older comment on KAFKA-4722 and
this seems to be related you the stack trace you did post there.
> StreamPartitionAssignor doesn't respect subscriptions to assign partitions.
> ---------------------------------------------------------------------------
>
> Key: KAFKA-4905
> URL: https://issues.apache.org/jira/browse/KAFKA-4905
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.2.0
> Reporter: Florian Hussonnois
>
> Both RangeAssignor and RoundRobinAssignor use the subscriptions to assign
> partition to each consumer. This allow to have two consumers belonging to the
> the same group and subscribing to two differents topics.
> This doesn't seem to be the case of the StreamPartitionAssignor resulting to
> an IllegalArgumentException thrown during rebalance.
> java.lang.IllegalArgumentException: Assigned partition foo-2 for
> non-subscribed topic regex pattern; subscription pattern is bar
> at
> org.apache.kafka.clients.consumer.internals.SubscriptionState.assignFromSubscribed(SubscriptionState.java:190)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:216)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:352)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:303)
> This is because the consumer group leader attempt to assign partitions to a
> consumer that didn't subscribe to the associated topic.
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