Guozhang Wang created KAFKA-3839:
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Summary: Handling null keys in KTable.groupBy
Key: KAFKA-3839
URL: https://issues.apache.org/jira/browse/KAFKA-3839
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Guozhang Wang
This is first reported by [~jeff.klu...@gmail.com].
Similarly as we handle null keys in KStream join and aggregations in KAFKA-3561
(https://github.com/apache/kafka/pull/1472), for KTable.groupBy operators we
should also gracefully handle null keys by filter them out since they will not
be participating in the aggregation.
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