GitHub user mjsax opened a pull request: https://github.com/apache/kafka/pull/3134
Kafka-5315: should not subtract for empty key is KTable.aggregate/reduce You can merge this pull request into a Git repository by running: $ git pull https://github.com/mjsax/kafka kafka-5315-fix-at-least-once-violation Alternatively you can review and apply these changes as the patch at: https://github.com/apache/kafka/pull/3134.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 #3134 ---- commit e7d26bc45c284c71b8930bc4baba11ee64e9c08f Author: Matthias J. Sax <matth...@confluent.io> Date: 2017-05-24T07:59:07Z Kafka-5315: should not subtract for empty key is KTable.aggregate/reduce ---- --- 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. ---