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https://issues.apache.org/jira/browse/KAFKA-6924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16483155#comment-16483155
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Guozhang Wang commented on KAFKA-6924:
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Hello Navinder, thanks for reporting this JIRA.
Is it the same request as of https://issues.apache.org/jira/browse/KAFKA-6144?
> Making state store queryable on replicas
> ----------------------------------------
>
> Key: KAFKA-6924
> URL: https://issues.apache.org/jira/browse/KAFKA-6924
> Project: Kafka
> Issue Type: New Feature
> Components: streams
> Reporter: Navinder Brar
> Priority: Major
>
> State store in Kafka streams are currently only queryable when StreamTask is
> in RUNNING state. The idea is to make it queryable even for StandbyTasks to
> decrease the downtime if client is not able to fetch data from Active machine.
> Suppose the coordinator is not able to connect to machine which had active
> partition due to some reason. So, rather than failing that request we could
> serve request from replica which could be on some other machine. Although
> state on replica might be little behind the active but it could still be
> beneficial in some cases to serve request from replica than failing the
> request.
> It's very important improvement as it could simply improve the availability
> of microservices developed using kafka streams.
> I am working on a patch for this change. Any feedback or comments are welcome.
> Also, I have gone thorugh https://issues.apache.org/jira/browse/KAFKA-6031,
> has this been implemented?
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