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Guozhang Wang resolved KAFKA-4218. ---------------------------------- Resolution: Fixed Fix Version/s: (was: 1.1.0) 2.1.0 This has been resolved by https://github.com/apache/kafka/commit/bcc712b45820da74b44209857ebbf7b9d59e0ed7 from [~jeyhunkarimov] > Enable access to key in ValueTransformer > ---------------------------------------- > > Key: KAFKA-4218 > URL: https://issues.apache.org/jira/browse/KAFKA-4218 > Project: Kafka > Issue Type: Improvement > Components: streams > Affects Versions: 0.10.0.1 > Reporter: Elias Levy > Assignee: Jeyhun Karimov > Priority: Major > Labels: api, kip > Fix For: 2.1.0 > > > While transforming values via {{KStream.transformValues}} and > {{ValueTransformer}}, the key associated with the value may be needed, even > if it is not changed. For instance, it may be used to access stores. > As of now, the key is not available within these methods and interfaces, > leading to the use of {{KStream.transform}} and {{Transformer}}, and the > unnecessary creation of new {{KeyValue}} objects. > KIP-149: > https://cwiki.apache.org/confluence/display/KAFKA/KIP-149%3A+Enabling+key+access+in+ValueTransformer%2C+ValueMapper%2C+and+ValueJoiner -- This message was sent by Atlassian JIRA (v7.6.3#76005)