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https://issues.apache.org/jira/browse/KAFKA-9224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16979847#comment-16979847
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Matthias J. Sax commented on KAFKA-9224:
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Seems to be a duplicate of https://issues.apache.org/jira/browse/KAFKA-8870 ?
> State store should not see uncommitted transaction result
> ---------------------------------------------------------
>
> Key: KAFKA-9224
> URL: https://issues.apache.org/jira/browse/KAFKA-9224
> Project: Kafka
> Issue Type: Improvement
> Reporter: Boyang Chen
> Assignee: Boyang Chen
> Priority: Major
>
> Currently under EOS, the write to state store is not guaranteed to happen
> after the ongoing transaction is finished. This means interactive query could
> see uncommitted data within state store which is not ideal for users relying
> on state stores for strong consistency. Ideally, we should have an option to
> include state store commit as part of ongoing transaction, however an
> immediate step towards a better reasoned system is to `write after
> transaction commit`, which means we always buffer data within stream cache
> for EOS until the ongoing transaction is committed.
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