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https://issues.apache.org/jira/browse/KAFKA-5765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16137081#comment-16137081
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Xavier Léauté commented on KAFKA-5765:
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I have a small request when it comes to merge(). The current varargs form
generates a lot of compiler warnings that need to be suppressed using
{{@SuppressWarnings("unchecked")}}.
Given that the typical merge use-case only involves only a handful of streams,
I think it would be useful to provide a couple of overloads that take a fixed
number of arguments, similar to what Guave does in
[ImmutableList.of(...)|https://google.github.io/guava/releases/21.0/api/docs/com/google/common/collect/ImmutableList.html#of-E-E-E-E-E-E-E-E-E-E-E-]
> 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
> Reporter: Matthias J. Sax
> Assignee: Matthias J. Sax
> Labels: needs-kip
>
> Merging multiple {{KStream}} is done via {{StreamsBuilder#merge()}} (formally
> {{KStreamBuilder#merge()}}). This is quite unnatural and should be done via
> {{KStream#merge()}}.
> As {{StreamsBuilder}} is not released yet, this is not a backward
> incompatible change (and KStreamBuilder is already deprecated). We still need
> a KIP as we add a new method to a public {{KStreams}} API.
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