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https://issues.apache.org/jira/browse/KAFKA-3121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15128915#comment-15128915
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ASF GitHub Bot commented on KAFKA-3121:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/839
> KStream DSL API Improvement
> ---------------------------
>
> Key: KAFKA-3121
> URL: https://issues.apache.org/jira/browse/KAFKA-3121
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Guozhang Wang
> Assignee: Guozhang Wang
> Fix For: 0.9.1.0
>
>
> From some collected feedbacks, here is a list of potential improvements that
> we want to make:
> 1. Remove AggregateSupplier for aggregate, and provide more built-in
> aggregations.
> 2. Join to return KeyValue<>.
> 3. "Windows" class syntax-sugers.
> 4. Add print() to KTable / KStream.
> 5. flatMap / flatMapValues to return arrays in addition to Iterable.
> 6. make the API function names aligned with Java 8+, e.g. filterOut ->
> filterNot
> 7. collapse process() and transform() in KStream.
> 8. validate Streaming configs and allow passing properties to KafkaStreaming.
> [DONE]
> 9. Rename KafkaStreaming to Streams. [DONE]
> Also move some of the state package into internals, and create a new
> top-level common folder with KeyValue / etc in it.
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