Avro deserialization success but cannot print the message

I have a legacy C++ based system which spits out binary encoded Avro data that supports confluent Avro schema registry format. In my Java application, I successfully deserialized the message using KafkaAvroDeserializer class but could not print out the message.

`
private void consumeAvroData(){
String group = "group1";
Properties props = new Properties();
props.put("bootstrap.servers", "http://1.2.3.4:9092");
props.put("group.id", group);
props.put("enable.auto.commit", "true");
props.put("auto.commit.interval.ms", "1000");
props.put("session.timeout.ms", "30000");
props.put("key.deserializer", LongDeserializer.class.getName());
props.put("value.deserializer", KafkaAvroDeserializer.class.getName());
// props.put(KafkaAvroDeserializerConfig.SPECIFIC_AVRO_READER_CONFIG,"false");
props.put("schema.registry.url","http://1.2.3.4:8081");
KafkaConsumer consumer = new KafkaConsumer(props);

consumer.subscribe(Arrays.asList(TOPIC_NAME));
System.out.println("Subscribed to topic " + TOPIC_NAME);

while (true) {
ConsumerRecords records = consumer.poll(100);
for (ConsumerRecord record : records)
{
System.out.printf("value = %s\n",record.value());
}
}
}
`
The output I see is

`{"value":"�"}
`

Any help appreciated !

Start with the consumeAvroData entry point and the KafkaAvroDeserializer configuration shown in the issue. Inspect the runtime type and schema of record.value() while comparing the decoded payload with the registered Avro schema. Done means explaining or reproducing the printing result {"value":"�"} and identifying a concrete resolution.

Written by the indexing model from the issue text.