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Boyang Chen commented on KAFKA-9984: ------------------------------------ [~guozhang] Thanks! > Should fail the subscription when pattern is empty > -------------------------------------------------- > > Key: KAFKA-9984 > URL: https://issues.apache.org/jira/browse/KAFKA-9984 > Project: Kafka > Issue Type: Bug > Components: consumer > Reporter: Boyang Chen > Priority: Major > > We have seen a case where the consumer subscribes to an empty string pattern: > ``` > [Consumer ... ] Subscribed to pattern: '' > ``` > which doesn't make any sense and usually indicate a configuration error. The > `consumer.subscribe(pattern)` call should fail with illegal argument for this > case. -- This message was sent by Atlassian Jira (v8.3.4#803005)