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Posted to jira@kafka.apache.org by "sanghyeok An (Jira)" <ji...@apache.org> on 2025/11/22 08:19:00 UTC
[jira] [Updated] (KAFKA-16366) Refactor KTable source optimization

     [ https://issues.apache.org/jira/browse/KAFKA-16366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

sanghyeok An updated KAFKA-16366:
---------------------------------
    Description: 
Kafka Streams DSL offers an optimization to re-use an input topic as table changelog, in favor of creating a dedicated changelog topic.

So far, the Processor API did not support any such feature, and thus when the DSL compiles down into a Topology, we needed to access topology internal stuff to allow for this optimization.
https://issues.apache.org/jira/browse/KAFKA-16366#
With KIP-813 (merged for AK 3.8), we added `Topology#addReadOnlyStateStore` as public API, and thus we should refactor the DSL compilation code, to use this public API to build the `Topology` instead of internal APIs.

  was:
Kafka Streams DSL offers an optimization to re-use an input topic as table changelog, in favor of creating a dedicated changelog topic.

So far, the Processor API did not support any such feature, and thus when the DSL compiles down into a Topology, we needed to access topology internal stuff to allow for this optimization.

With KIP-813 (merged for AK 3.8), we added `Topology#addReadOnlyStateStore` as public API, and thus we should refactor the DSL compilation code, to use this public API to build the `Topology` instead of internal APIs.


> Refactor KTable source optimization
> -----------------------------------
>
>                 Key: KAFKA-16366
>                 URL: https://issues.apache.org/jira/browse/KAFKA-16366
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>            Reporter: Matthias J. Sax
>            Priority: Minor
>
> Kafka Streams DSL offers an optimization to re-use an input topic as table changelog, in favor of creating a dedicated changelog topic.
> So far, the Processor API did not support any such feature, and thus when the DSL compiles down into a Topology, we needed to access topology internal stuff to allow for this optimization.
> https://issues.apache.org/jira/browse/KAFKA-16366#
> With KIP-813 (merged for AK 3.8), we added `Topology#addReadOnlyStateStore` as public API, and thus we should refactor the DSL compilation code, to use this public API to build the `Topology` instead of internal APIs.



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