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https://issues.apache.org/jira/browse/FLINK-29398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17712174#comment-17712174
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Chirag Dewan commented on FLINK-29398:
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Yeah, that makes sense. Thanks [~jeremy.degroot] for taking this up.
> Utilize Rack Awareness in Flink Consumer
> ----------------------------------------
>
> Key: FLINK-29398
> URL: https://issues.apache.org/jira/browse/FLINK-29398
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kafka
> Reporter: Jeremy DeGroot
> Assignee: Jeremy DeGroot
> Priority: Major
> Labels: pull-request-available
>
> [KIP-36|https://cwiki.apache.org/confluence/display/KAFKA/KIP-36+Rack+aware+replica+assignment]
> was implemented some time ago in Kafka. This allows brokers and consumers to
> communicate about the rack (or AWS Availability Zone) they're located in.
> Reading from a local broker can save money in bandwidth and improve latency
> for your consumers.
> Flink Kafka consumers currently cannot easily use rack awareness if they're
> deployed across multiple racks or availability zones, because they have no
> control over which rack the Task Manager they'll be assigned to may be in.
> This improvement proposes that a Kafka Consumer could be configured with a
> callback or Future that could be run when it's being configured on the task
> manager, that will set the appropriate value at runtime if a value is
> provided.
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