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https://issues.apache.org/jira/browse/FLINK-3658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15208132#comment-15208132
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Aljoscha Krettek commented on FLINK-3658:
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Seems legit, this would actually allow multiple outputs from one operator.
> Allow the FlinkKafkaProducer to send data to multiple topics
> ------------------------------------------------------------
>
> Key: FLINK-3658
> URL: https://issues.apache.org/jira/browse/FLINK-3658
> Project: Flink
> Issue Type: Improvement
> Components: Kafka Connector
> Affects Versions: 1.0.0
> Reporter: Robert Metzger
> Assignee: Robert Metzger
>
> Currently, the FlinkKafkaProducer is sending all events to one topic defined
> when creating the producer.
> We could allow users to send messages to multiple topics by extending the
> {{KeyedSerializationSchema}} by a method {{public String getTargetTopic(T
> element)}} which overrides the default topic if the return value is not null.
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