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https://issues.apache.org/jira/browse/KAFKA-6031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax resolved KAFKA-6031.
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Resolution: Duplicate
Closing this because title of KAFKA-6144 is more descriptive.
> Expose standby replicas endpoints in StreamsMetadata
> ----------------------------------------------------
>
> Key: KAFKA-6031
> URL: https://issues.apache.org/jira/browse/KAFKA-6031
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Stanislav Chizhov
> Priority: Major
> Labels: needs-kip
>
> Currently reads for a key are served by single replica, which has 2 drawbacks:
> - if replica is down there is a down time in serving reads for keys it was
> responsible for until a standby replica takes over
> - in case of semantic partitioning some replicas might become hot and there
> is no easy way to scale the read load
> If standby replicas would have endpoints that are exposed in StreamsMetadata
> it would enable serving reads from several replicas, which would mitigate the
> above drawbacks.
> Due to the lag between replicas reading from multiple replicas simultaneously
> would have weaker (eventual) consistency comparing to reads from single
> replica. This however should be acceptable tradeoff in many cases.
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