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Jeyhun Karimov commented on KAFKA-4218: --------------------------------------- [~mjsax], thanks for your comments. I absolutely agree on this. I think the most relevant issues to group (with this issue) are (as shown in relevant links as well) : KAFKA-4726 and KAFKA-3745 (although there is assignee, I haven't seen PR on this issue and it is stale for some time). Do you agree on this or are there other relevant issues that should be added to this group? > 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 > Labels: api, needs-kip, newbie > > 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. -- This message was sent by Atlassian JIRA (v6.3.15#6346)