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https://issues.apache.org/jira/browse/KAFKA-20665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax reassigned KAFKA-20665:
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Assignee: Matthias J. Sax
> Add warmup task support to reconciler
> --------------------------------------
>
> Key: KAFKA-20665
> URL: https://issues.apache.org/jira/browse/KAFKA-20665
> Project: Kafka
> Issue Type: Sub-task
> Components: group-coordinator, streams
> Reporter: Matthias J. Sax
> Assignee: Matthias J. Sax
> Priority: Major
>
> In the "classic" protocol, the HA assignor first computes a "final target"
> assignment, and second refines it with an incremental "intermediate target"
> assignment, keeping currently assigned tasks on their previous owner, and
> only assigning (some) warmup tasks to prepare the actually migration.
> With KIP-1071, we can use the reconciler though to take care of warmup tasks
> (if configures). Ie, an assignor just compute the "final target" assignment,
> and the reconciler applies it, using warmup tasks (if enabled).
> This setup not only make the actual assignor simpler, but also decouples
> warmup tasks from the assignor, and thus any assignor can not benefit from
> warmup tasks.
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