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https://issues.apache.org/jira/browse/KAFKA-7961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jason Gustafson reassigned KAFKA-7961:
--------------------------------------
Assignee: (was: Jason Gustafson)
> Handle subscription changes with a rebalance in progress
> --------------------------------------------------------
>
> Key: KAFKA-7961
> URL: https://issues.apache.org/jira/browse/KAFKA-7961
> Project: Kafka
> Issue Type: Bug
> Reporter: Jason Gustafson
> Priority: Major
>
> Due to wakeups or poll timeouts, it is possible to have a subscription
> changed while a rebalance is in progress. This can lead to an illegal state
> error such as the following if some of the assigned partitions no longer
> match the subscription:
> {code}
> java.lang.IllegalArgumentException: Assigned partition foo-0 for
> non-subscribed topic; subscription is [bar]
> at
> org.apache.kafka.clients.consumer.internals.SubscriptionState.assignFromSubscribed(SubscriptionState.java:192)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:249)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:410)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:344)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:344)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1226)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1191)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1176)
> {code}
> Rather than requiring the assignment received from a rebalance to match the
> subscription, we should just request a rebalance.
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