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https://issues.apache.org/jira/browse/KAFKA-6966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax resolved KAFKA-6966.
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Resolution: Fixed
> Extend `TopologyDescription.Sink` to return `TopicNameExtractor`
> ----------------------------------------------------------------
>
> Key: KAFKA-6966
> URL: https://issues.apache.org/jira/browse/KAFKA-6966
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.0.0
> Reporter: Matthias J. Sax
> Assignee: Nishanth Pradeep
> Priority: Major
> Labels: beginner, kip, newbie
> Fix For: 2.1.0
>
>
> With KIP-303, a dynamic routing feature was added and
> `TopologyDescription.Sink#topic()` returns `null` if this feature is used.
> It would be useful to get the actually used `TopicNameExtractor` class from
> the `TopologyDescription`.
> We suggest to add `Class<? extends TopicNameExtractor>
> TopologyDescription.Sink#topicNameExtractor()` and let it return `null` if
> dynamic routing feature is not used.
> KIP-321:
> [https://cwiki.apache.org/confluence/display/KAFKA/KIP-321%3A+Update+TopologyDescription+to+better+represent+Source+and+Sink+Nodes]
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