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https://issues.apache.org/jira/browse/KAFKA-20744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ziyun Fu resolved KAFKA-20744.
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Resolution: Fixed
> Add back `rack.aware.assignment.tags` config
> --------------------------------------------
>
> Key: KAFKA-20744
> URL: https://issues.apache.org/jira/browse/KAFKA-20744
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Ziyun Fu
> Assignee: Ziyun Fu
> Priority: Major
> Labels: kip
>
> KIP-1017 ([KIP-1071: Streams Rebalance
> Protocol|https://cwiki.apache.org/confluence/spaces/KAFKA/pages/311627992/KIP-1071+Streams+Rebalance+Protocol])
> proposed to deprecate and remove the Kafka Streams config
> `rack.aware.assignment.tags`. This is correct by itself, but incomplete,
> because we need this config broker side.
> So far, it was no a problem because rack-aware standby task assignment was
> not implemented yet, and while KIP-1071 is already GA with 4.2.0 release,
> it's not feature complete yet.
> The KIP was updated and corrected now. This ticket is about closing this
> broker side gap, and add `rack.aware.assignment.tags` as broker and
> group-level config.
> After this ticket is resolved, assignors can use the rack information to
> assign standby tasks in a rack-aware manner. This will be follow up work not
> covered by this ticket.
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