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Posted to jira@kafka.apache.org by "Nicholas Telford (Jira)" <ji...@apache.org> on 2025/02/10 10:45:00 UTC

[jira] [Created] (KAFKA-18765) Custom StreamsPartitioner for auto-repartitioning

Nicholas Telford created KAFKA-18765:
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             Summary: Custom StreamsPartitioner for auto-repartitioning
                 Key: KAFKA-18765
                 URL: https://issues.apache.org/jira/browse/KAFKA-18765
             Project: Kafka
          Issue Type: Improvement
          Components: streams
    Affects Versions: 4.0.0
            Reporter: Nicholas Telford


There is currently no way to configure the {{StreamsPartitioner}} used by auto-repartitioning when using the Kafka Streams DSL. The default {{StreamsPartitioner}} is always used.

This can create a problem for users, whereby joining/aggregating with a stream/table that has been partitioned with a custom partitioner may not work as expected, if the user does not explicitly {{repartition()}} the stream first with the custom {{{}StreamsPartitioner{}}}.



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