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https://issues.apache.org/jira/browse/KAFKA-18096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lianet Magrans resolved KAFKA-18096.
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Resolution: Fixed
> Allow new consumer to join group after subscribe to pattern if no matching
> topics
> ---------------------------------------------------------------------------------
>
> Key: KAFKA-18096
> URL: https://issues.apache.org/jira/browse/KAFKA-18096
> Project: Kafka
> Issue Type: Improvement
> Components: clients, consumer
> Reporter: Lianet Magrans
> Assignee: Lianet Magrans
> Priority: Minor
> Labels: kip-848-client-support
> Fix For: 4.0.0
>
>
> Currently the new consumer won't transition to joining after a call to
> subscribe with Pattern if there are no matching topics. This was because the
> coordinator does not allow to join without topics (or regex). If that
> validation is removed from the broker with KAFKA-18095, we should update the
> consumer so that it attempts to join in that case.
>
> This should allow to enable this test for the new consumer
> https://github.com/apache/kafka/blob/866d66229da658a5eb1fcb9da28624dd8d2f3e2a/core/src/test/scala/integration/kafka/api/AuthorizerIntegrationTest.scala#L1053
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