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https://issues.apache.org/jira/browse/KAFKA-5765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168965#comment-16168965
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Richard Yu commented on KAFKA-5765:
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To my understanding, there should be a {{merge()}} method that is added to the
{{KStream}} interface (non-internal). However, that means that
no instances of internal classes could be used as an input argument. Meanwhile,
the {{KStreamImpl}} class (which is internal) should override this method, but
needs access to the corresponding {{InternalStreamsBuilder}} instance for the
streams to be merged. Is there a way to access the corresponding
{{InternalStreamsBuilder}} instance?
> Move merge() from StreamsBuilder to KStream
> -------------------------------------------
>
> Key: KAFKA-5765
> URL: https://issues.apache.org/jira/browse/KAFKA-5765
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.11.0.0, 1.0.0
> Reporter: Matthias J. Sax
> Labels: needs-kip, newbie
> Fix For: 1.1.0
>
>
> Merging multiple {{KStream}} is done via {{StreamsBuilder#merge()}} (formally
> {{KStreamBuilder#merge()}}). This is quite unnatural and should be done via
> {{KStream#merge()}}.
> We need a KIP as we add a new method to a public {{KStreams}} API and
> deprecate the old {{merge()}} method.
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