[jira] [Commented] (KAFKA-15538) Client support for java regex based subscription

["Phuc Hong Tran (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-15538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17814054#comment-17814054 ] 

Phuc Hong Tran commented on KAFKA-15538:
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[~lianetm], this ticket has some overlaps with ticket KAFKA-15561. I reckon we should close this ticket and commit the required content into the ticket KAFKA-15561.

> Client support for java regex based subscription
> ------------------------------------------------
>
>                 Key: KAFKA-15538
>                 URL: https://issues.apache.org/jira/browse/KAFKA-15538
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: clients, consumer
>            Reporter: Lianet Magrans
>            Assignee: Phuc Hong Tran
>            Priority: Critical
>              Labels: kip-848-client-support, newbie, regex
>             Fix For: 3.8.0
>
>
> When using subscribe with a java regex (Pattern), we need to resolve it on the client side to send the broker a list of topic names to subscribe to.
> Context:
> The new consumer group protocol uses [Google RE2/J|https://github.com/google/re2j] for regular expressions and introduces new methods in the consumer API to subscribe using a `SubscribePattern`. The subscribe using a java `Pattern` will be still supported for a while but eventually removed.
>  * When the subscribe with SubscriptionPattern is used, the client should just send the regex to the broker and it will be resolved on the server side.
>  * In the case of the subscribe with Pattern, the regex should be resolved on the client side.
> As part of this task, we should re-enable all integration tests defined in the PlainTextAsyncConsumer that relate to subscription with pattern and that are currently disabled for the new consumer + new protocol



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