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https://issues.apache.org/jira/browse/KAFKA-15561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17804761#comment-17804761
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Lianet Magrans commented on KAFKA-15561:
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Hey [~phuctran], thanks for your interest! From the consumer point of view, at
this moment we have an initial simple approach, based on a static config: the
consumer relies on the
[group.protocol|https://github.com/apache/kafka/blob/bdad1631824035c8c31163ca6d054feff5421b29/clients/src/main/java/org/apache/kafka/clients/consumer/ConsumerConfig.java#L111]
config defined in the KIP, to check if the protocol is enabled. It then
instantiates the new #AsyncKafkaConsumer, which is the only one that supports
the new protocol. The logic is in the
[ConsumerDelegateCreator|[https://github.com/apache/kafka/blob/30d9678b3b7d069da13edf5eb99fb0edb99f0a87/clients/src/main/java/org/apache/kafka/clients/consumer/internals/ConsumerDelegateCreator.java#L60].]
This initial approach will soon be extended as part of
[KAFKA-15284|https://issues.apache.org/jira/browse/KAFKA-15284] to dynamically
determine if the new protocol is supported by the broker and should be used.
> Client support for new SubscriptionPattern based subscription
> -------------------------------------------------------------
>
> Key: KAFKA-15561
> URL: https://issues.apache.org/jira/browse/KAFKA-15561
> Project: Kafka
> Issue Type: New Feature
> Components: clients, consumer
> Reporter: Lianet Magrans
> Assignee: Phuc Hong Tran
> Priority: Major
> Labels: consumer-threading-refactor, kip-848,
> kip-848-client-support
> Fix For: 3.8.0
>
>
> New consumer should support subscribe with the new SubscriptionPattern
> introduced in the new consumer group protocol. When subscribing with this
> regex, the client should provide the regex in the HB request on the
> SubscribedTopicRegex field, delegating the resolution to the server.
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