Hi Ying, It looks to me that all the examples given in the KIP can be handled with the existing "message.downconversion.enable" config and by configuring the message format to be the latest:
1. Kafka 8 / 9 / 10 consumer hangs when the message contains message header > ( KAFKA-6739 - Down-conversion fails for records with headers RESOLVED ) > 2. LZ4 is not correctly handled in Kafka 8 and Kafka 9 ( KAFKA-3160 - > Kafka LZ4 framing code miscalculates header checksum RESOLVED ) > 3. Performance penalty of converting message format from V3 to V1 or V2 > for the old consumers (KIP-31 - Move to relative offsets in compressed > message sets) Am I missing something? Are there other examples that are not related to message conversion? Ismael On Thu, Apr 11, 2019 at 11:53 PM Ying Zheng <yi...@uber.com.invalid> wrote: > Hi here, > > Please vote for > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-433%3A+Block+old+clients+on+brokers > > Thank you! >