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https://issues.apache.org/jira/browse/KAFKA-6641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax resolved KAFKA-6641.
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Resolution: Duplicate
> Consider auto repartitioning for Stream.transform() API
> -------------------------------------------------------
>
> Key: KAFKA-6641
> URL: https://issues.apache.org/jira/browse/KAFKA-6641
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Guozhang Wang
> Priority: Major
> Labels: api
>
> Today with map / mapValues of Streams DSL, we will set a flag / not set a
> flag for the underlying topology builder; but for transform /
> transformValues, we do not make such marking choices. Maybe the topology
> builder can still make such flagging for transform() to indicate that since
> the key maybe changed, we should issue a repartition for the downstream
> stateful operators when necessary.
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