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https://issues.apache.org/jira/browse/KAFKA-4248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Gustafson resolved KAFKA-4248.
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Resolution: Fixed
Issue resolved by pull request 1954
[https://github.com/apache/kafka/pull/1954]
> Consumer can return data from old regex subscription in poll()
> --------------------------------------------------------------
>
> Key: KAFKA-4248
> URL: https://issues.apache.org/jira/browse/KAFKA-4248
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Fix For: 0.10.1.0
>
>
> Because we only update the subscription from the metadata listener currently,
> it is possible when the user changes regex subscriptions to receive data from
> the old subscription. To fix this, we need to ensure that we rematch the new
> regex against the current metadata
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