Examining the *org.apache.flink.table.descriptors.Kafka* class in Flink v1.9, it seems to not have the ability to set whether the Kafka producer should attach a timestamp to the message. The *FlinkKafkaProducer* class has a setter for controlling this producer attribute.
Can/should this attribute be added to the table descriptor? I assume it was left out because the table descriptor wants to maintain backwards compatibility with older versions of Kafka where this attribute is not supported.
