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From "Guozhang Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-6567) KStreamWindowReduce can be replaced by KStreamWindowAggregate
Date Thu, 15 Feb 2018 21:53:00 GMT
Guozhang Wang created KAFKA-6567:
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             Summary: KStreamWindowReduce can be replaced by KStreamWindowAggregate
                 Key: KAFKA-6567
                 URL: https://issues.apache.org/jira/browse/KAFKA-6567
             Project: Kafka
          Issue Type: Improvement
          Components: streams
            Reporter: Guozhang Wang


This is a tech debt worth cleaning up: KStreamWindowReduce should be able to be replaced by
KStreamWindowAggregate. In fact, we have already done this for session windows, where in {{SessionWindowedKStreamImpl}}
we use {{reduceInitializer}}, {{aggregatorForReducer}} and {{mergerForAggregator}} to replace
reducer with aggregator.



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