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https://issues.apache.org/jira/browse/KAFKA-6729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-6729.
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Resolution: Fixed
> KTable should use user source topics if possible and not create changelog
> topic
> -------------------------------------------------------------------------------
>
> Key: KAFKA-6729
> URL: https://issues.apache.org/jira/browse/KAFKA-6729
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.0.0
> Reporter: Matthias J. Sax
> Assignee: Guozhang Wang
> Priority: Blocker
> Fix For: 2.0.0
>
>
> With KIP-182 we reworked Streams API largely and introduced a regression into
> 1.0 code base. If a KTable is populated from a source topic, ie,
> StreamsBuilder.table() -- the KTable does create its own changelog topic.
> However, in older releases (0.11 or older), we don't create a changelog topic
> but use the user specified source topic instead.
> We want to reintroduce this optimization to reduce the load (storage and
> write) on the broker side for this case.
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