Hi all, I would like to start a vote for KIP-1340: Expose Both Mapped Key and Stream Key in Streams-GlobalKTable Joins. This KIP introduces a new ValueJoinerWithMultipleKeys functional interface and four corresponding KStream#join / leftJoin overloads for stream-GlobalKTable joins that expose both the mapped join key (the GlobalKTable lookup key) and the original stream record key, and deprecates the existing ValueJoinerWithKey-based overloads.
KIP: https://cwiki.apache.org/confluence/spaces/KAFKA/pages/421958552/KIP-1340+Expose+Both+Mapped+Key+and+Stream+Key+in+Streams-GlobalKTable+Joins Discussion Thread: https://lists.apache.org/thread/mshwxyjs6z4crrf26ffsk2j4ygmrmm7s Thanks, Lucy Liu
