Stephane Maarek updates us on the goings-on with Apache Kafka:
Kafka 2.1 is quite a special upgrade because you cannot downgrade due to a schema change in the consumer offsets topics. Otherwise the procedure to upgrade Kafka is still the same as before, see: https://kafka.apache.org/documentation/#upgrade
One of the big changes is support for Java 11. It’s a shame that Spark currently doesn’t support versions past 8.