[jira] [Assigned] (KAFKA-9525) Allow explicit rebalance triggering on the Consumer

["Sophie Blee-Goldman (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-9525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sophie Blee-Goldman reassigned KAFKA-9525:
------------------------------------------

    Assignee: Sophie Blee-Goldman

> Allow explicit rebalance triggering on the Consumer
> ---------------------------------------------------
>
>                 Key: KAFKA-9525
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9525
>             Project: Kafka
>          Issue Type: Improvement
>          Components: clients
>            Reporter: Sophie Blee-Goldman
>            Assignee: Sophie Blee-Goldman
>            Priority: Major
>              Labels: needs-kip
>
> Currently the only way to explicitly trigger a rebalance is by unsubscribing the consumer. This has two drawbacks: it does not work with static membership, and it causes the consumer to revoke all its currently owned partitions. Streams relies on being able to enforce a rebalance for its version probing upgrade protocol and the upcoming KIP-441, both of which should be able to work with static membership and be able to leverage the improvements of KIP-429 to no longer revoke all owned partitions.
> We should add an API that will allow users to explicitly trigger a rebalance without going through #unsubscribe



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