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  1. Kafka
  2. KAFKA-7492

Explain `null` handling for reduce and aggregate

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      We currently don't explain how records with `null` value are handled in reduce and aggregate. In particular, what happens when the users' aggregation/reduce `apply()` implementation returns `null`.

      We should update the JavaDocs accordingly and maybe also update the docs on the web page.

      Cf. https://stackoverflow.com/questions/52692202/what-happens-if-the-aggregator-of-a-kgroupedstream-returns-null

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              • Assignee:
                asutosh_pandya Asutosh Pandya
                Reporter:
                mjsax Matthias J. Sax
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