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https://issues.apache.org/jira/browse/FLINK-9610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16592422#comment-16592422
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ASF GitHub Bot commented on FLINK-9610:
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cricket007 commented on issue #6181: [FLINK-9610] [flink-connector-kafka-base]
Add Kafka Partitioner that uses the hash of the provided key.
URL: https://github.com/apache/flink/pull/6181#issuecomment-415930190
Kafka uses a Murmur2 Hash, not `Arrays.hashCode`
https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/producer/internals/DefaultPartitioner.java#L69
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> Add Kafka partitioner that uses the key to partition by
> -------------------------------------------------------
>
> Key: FLINK-9610
> URL: https://issues.apache.org/jira/browse/FLINK-9610
> Project: Flink
> Issue Type: New Feature
> Components: Kafka Connector
> Reporter: Niels Basjes
> Assignee: Niels Basjes
> Priority: Major
> Labels: pull-request-available
>
> The kafka connector package only contains the FlinkFixedPartitioner
> implementation of the FlinkKafkaPartitioner.
> The most common usecase I have seen is the need to spread the records across
> the Kafka partitions while keeping all messages with the same key together.
> I'll put up a pull request with a very simple implementation that should make
> this a lot easier for others to use and extend.
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