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https://issues.apache.org/jira/browse/KAFKA-15337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax updated KAFKA-15337:
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Component/s: streams
> Disable *-subscription-store-changelog topic creation for foreign key join in
> Kafka Streams
> -------------------------------------------------------------------------------------------
>
> Key: KAFKA-15337
> URL: https://issues.apache.org/jira/browse/KAFKA-15337
> Project: Kafka
> Issue Type: New Feature
> Components: streams
> Reporter: Rohan
> Priority: Minor
>
> I recently asked a question on
> [stackoverflow|https://stackoverflow.com/questions/76801628/disable-subscription-store-changelog-topic-creation-for-foreign-key-join-in-ka]
> where [~mjsax] commented to raise a ticket for this.
>
> *Requirement:*
> When we do foreign key join in Kafka streams, it creates 3 state stores (as
> given on the [confluent
> page|https://www.confluent.io/blog/data-enrichment-with-kafka-streams-foreign-key-joins/])
> :
> {quote}The three state stores involved are:
> # left-STATE-STORE-0000000000: The left-hand-side KTable store.
> # right-STATE-STORE-0000000003: The left-hand-side KTable store.
> # myjoin-subscription-store: The subscription store for the join. This is
> the new data structure discussed above. Regardless of the operation name,
> this store is always suffixed -subscription-store. {_}Note for your capacity
> planning that this store will also have a corresponding changelog, called
> *myjoin-subscription-store-changelog*{_}.{quote}
> Can we have an additional option to disable this
> *myjoin-subscription-store-changelog* topic creation?
>
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