Charles Crain created KAFKA-7714:
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Summary: Scala streams API should use Options in left and outer
joins
Key: KAFKA-7714
URL: https://issues.apache.org/jira/browse/KAFKA-7714
Project: Kafka
Issue Type: Improvement
Components: streams
Affects Versions: 2.1.0, 2.0.1
Reporter: Charles Crain
The Scala streams DSL for left and outer joins should use Options instead of
possibly-null parameters to the joiner functions. As currently written,
implementers of joiners for Kafka Streams must account for the right side of a
left join (or either side of an outer join) being null, which is not idiomatic
Scala.
Note to reviewer: I would like to contribute this change myself. What is the
policy on breaking API changes? Would it be acceptable to change the left/outer
join APIs to accept options? Or would I need to implement parallel versions
(naming suggestions if so?).
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