- [fix][java] Fix ConsumerBuilderImpl can not set null to deadLetterPolicy #14980
- [fix][java] Fix conversion of
TimestampMillisConversion has no effect when Jsr310Conversion enabled #15863
- [fix][java] Fix messages sent by producers without schema cannot be decoded #15622
- [fix][java] Fix performance regression with message listener #15162
- [fix][java] Fix potentially unfinished CompletableFuture in doReconsumeLater #14947
- [fix][java] Fix race condition in consumer redelivery #14687
- [fix][java] Fix the producer OOM if got an exception while adding messages to batch container #12170
- [fix][java] PartitionsAutoUpdateFuture never complete #14625
- [fix][java] Remove consumer when close consumer command is received #15761
- [fix][java] Fix PartitionedProducerImpl flushAsync always fail when one partition send TimeOutException #14602
- [improve][java] Add pending messages information while printing the producer stats #15440
- [improve][java] AsyncHttpConnector doesn't use the system properties configured #15307
- [improve][java] Avoid timer task run before previous subscribe complete #14818
- [improve][java] Process maxRedeliverCount is 0 of DeadLeddterPolicy #14706
- [improve][java] Improve logic when ACK grouping tracker checks duplicated message id #15465