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https://issues.apache.org/jira/browse/KAFKA-7430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16624043#comment-16624043
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ASF GitHub Bot commented on KAFKA-7430:
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efeller opened a new pull request #5675: KAFKA-7430: Improve Transformer
interface JavaDoc
URL: https://github.com/apache/kafka/pull/5675
This PR improves the JavaDoc of the transformer interface. See
https://issues.apache.org/jira/browse/KAFKA-7430 for more details.
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> Improve Transformer interface JavaDoc
> -------------------------------------
>
> Key: KAFKA-7430
> URL: https://issues.apache.org/jira/browse/KAFKA-7430
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Affects Versions: 0.10.2.2, 0.11.0.3, 1.1.1, 2.0.0
> Reporter: Eugen Feller
> Assignee: Eugen Feller
> Priority: Trivial
> Labels: stream
>
> Currently Transformer JavaDoc mentions that it is possible to use both
> ctx.forward() and returning a KeyValue(). It would be great if we could
> mention that returning a KeyValue is merely a convenience thing. In other
> words, everything can be achieved using ctx.forward():
> "return new KeyValue()" and "ctx.forward(); return null;" are equivalent.
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