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https://issues.apache.org/jira/browse/KAFKA-21375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ming-Yen Chung reassigned KAFKA-21375:
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Assignee: Ming-Yen Chung (was: Chia-Ping Tsai)
> Add per-topic metrics for bytes sent to brokers outside client.rack
> -------------------------------------------------------------------
>
> Key: KAFKA-21375
> URL: https://issues.apache.org/jira/browse/KAFKA-21375
> Project: Kafka
> Issue Type: Improvement
> Reporter: Chia-Ping Tsai
> Assignee: Ming-Yen Chung
> Priority: Major
> Labels: need-kip
>
> `partitioner.rack.aware` allows user to adjust the route to try the rack as
> much as possible. However, it is hard to observe the "miss" from client side
> since we didn't add any metrics for that.
> Since the rack is used to save money, the unit of metrics should be bytes. It
> should record the size of produce requests sent to brokers whose rack differs
> from `client.rack`.
> This is useful even without `partitioner.rack.aware`, as users can see the
> cross-rack traffic before and after enabling it.
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