public void setFailOnMissingField(boolean failOnMissingField) {
		this.failOnMissingField = failOnMissingField;
	}
Configures the failure behaviour if a JSON field is missing.

<p>By default, a missing field is ignored and the field is set to null.

@param failOnMissingField Flag indicating whether to fail or not on a missing field.
kafka-base/kafka-base-source/src/main/java/org/apache/flink/formats/json/DTJsonRowDeserializationSchema.java