java.lang.NoSuchMethodException for init method in Scala case class

Question

I am writing an Apache Flink streaming application that deserializes data (Avro format) read off a Kafka bus (more details on here). The data is being deserialized into a Sc

Answer 1

The Avro serializer or more specifically the SpecificData requires the target type to have a default constructor (constructor with no arguments). Otherwise Avro cannot instantiate an object of the target type.

Try to add a default constructor via

case class DeviceData(
    deviceId: String,
    sw_version: String,
    timestamp: String,
    reading: Double) {
  def this() = this("default", "default", "default", 0)
}