I would suggest adding a configuration key which controls whether the null values are added. That configuration key can default to true in 4.x and false in 5.x. This will give people a chance to test the new behavior before 5.x.
best, Colin On Fri, Mar 14, 2025, at 04:30, 黃竣陽 wrote: > Hello everyone, > > I would like to start a discussion on KIP-1140: Avoid to return null > value in Map from public api of consumer > <https://cwiki.apache.org/confluence/x/mIuMEw> > > This proposal aims to improve the Kafka consumer API by ensuring that > the Map it returns contains only non-null values, > aligning with the design philosophy of Java collections. This change > provides significantly more benefits than drawbacks, > enhancing API consistency and usability while reducing errors caused by > developer misuse. > > Best Regards, > Jiunn-Yang
