How to Deserialising Kafka AVRO messages using Apache Beam

Question

The main goal is the aggregate two Kafka topics, one compacted slow moving data and the other fast moving data which is received every second.

I have been able to c

Answer 1

Yohei's answer is good, but I also found this to work

import io.confluent.kafka.streams.serdes.avro.SpecificAvroDeserializer;

...

public static class CustomKafkaAvroDeserializer extends SpecificAvroDeserializer {}

...
.withValueDeserializerAndCoder(CustomKafkaAvroDeserializer.class, AvroCoder.of(MyCustomClass.class))
...

where MyCustomClass is code gen'd with Avro tools.