Kirk True created KAFKA-15909:
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Summary: Remove support for empty "group.id"
Key: KAFKA-15909
URL: https://issues.apache.org/jira/browse/KAFKA-15909
Project: Kafka
Issue Type: Sub-task
Components: clients, consumer
Reporter: Kirk True
Assignee: Kirk True
Per KIP-266, the {{Consumer.poll(long timeout)}} method was deprecated back in
2.0.0.
In 3.7, there are two implementations, each with different behavior:
* The {{LegacyKafkaConsumer}} implementation will continue to work but will log
a warning about its removal
* The {{AsyncKafkaConsumer}} implementation will throw an error.
In 4.0, the `poll` method that takes a single `long` timeout will be removed
altogether.
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