[jira] [Assigned] (KAFKA-18680) Design unclean recovery elections subsystem

["Jonah Hooper (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-18680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonah Hooper reassigned KAFKA-18680:
------------------------------------

    Assignee: Jonah Hooper

> Design unclean recovery elections subsystem
> -------------------------------------------
>
>                 Key: KAFKA-18680
>                 URL: https://issues.apache.org/jira/browse/KAFKA-18680
>             Project: Kafka
>          Issue Type: Sub-task
>            Reporter: Jonah Hooper
>            Assignee: Jonah Hooper
>            Priority: Major
>
> There must be a subsystem within the controller which handles UncleanRecovery based on the two new strategies (balanced and aggressive) outlined in KIP-966.
> The controller currently has no ability to reach out to brokers for any reason. Generally there is a "pull" model where brokers poll controllers for updates. 
> In the case of Unclean recovery, controllers will poll brokers for information about their replicas. 
> The new subsystem will need to keep track of these outgoing requests and the remaining time required to make a decision about the election based on the given strategy. 



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