Is anyone using Apache Beam with Kafka 0.9.x and older? I am thinking of deprecating 0.9.x and 0.10.0 in Beam 2.4 and remove support in 2.5 or later. 0.10.1 and up will be supported. 0.10.1+ includes much better timestamp support.
By deprecation I mean KafkaIO would continue to work with an older version at runtime, but would not build with it (e.g. `mvn -Dkafka.clients.version=0.9.1` fails). We can print a deprecation warning at runtime. [1]: https://github.com/apache/kafka/commit/23c69d62a0cabf06c4db8b338f0ca824dc6d81a7
