GitHub user jeyhunkarimov opened a pull request: https://github.com/apache/kafka/pull/3570
KAFKA-4218: KIP-149, Enabling withKey interfaces in streams This PR aims to provide key access to ValueMapper, ValueJoiner, ValueTransformer, Initializer and Reducer interfaces. More details can be found in [here](https://cwiki.apache.org/confluence/display/KAFKA/KIP-149%3A+Enabling+key+access+in+ValueTransformer%2C+ValueMapper%2C+and+ValueJoiner) You can merge this pull request into a Git repository by running: $ git pull https://github.com/jeyhunkarimov/kafka KIP-149 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/kafka/pull/3570.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #3570 ---- commit a1bbfdca86c53359ef75217ec4aaad06179d967d Author: Jeyhun Karimov <je.kari...@gmail.com> Date: 2017-07-21T23:18:05Z Add withKey methods to KStream, KGroupedStream, KTable and KGroupedTable interfaces ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---