See headers of dead letter queue - jdbc

Question

I'm using JDBC sink connector to load data from kafka topic to postgres.
here is my configuration
curl --location --request PUT 'http://localhost:8083/connectors/customer_sink_1/config' \
--header 'Content-Type: application/json' \
--data-raw '{
"connector.class": "io.confluent.connect.jdbc.JdbcSinkConnector",
"connection.url":"jdbc:postgresql://localhost:5432/postgres",
"connection.user":"user",
"connection.password":"passwd",
"tasks.max" : "1",
"topics":"table_name_same_as_topic_name",
"insert.mode":"insert",
"key.converter":"org.apache.kafka.connect.converters.ByteArrayConverter",
"value.converter":"org.apache.kafka.connect.json.JsonConverter",
"quote.sql.identifiers":"never",
"errors.tolerance":"all",
"errors.deadletterqueue.topic.name":"failed_records",
"errors.deadletterqueue.topic.replication.factor":"1",
"errors.log.enable":"true",
"errors.deadletterqueue.context.headers.enable":"true",
"reporter.bootstrap.servers":"localhost:9092",
"reporter.result.topic.name":"success-responses",
"reporter.result.topic.replication.factor":"1",
"reporter.error.topic.name":"error-responses",
"reporter.error.topic.replication.factor":"1"
}'
I downloaded kafka from apache kafka on windows and using .bat files to use the service.
I was able to send the failed records to other topic but when I tried consuming it using kafka-consumer from command line was not able to see the headers, but can see the data/record which is failed.
As per the documentation, Kafka Connect Concepts
You can then use the **kcat** (formerly kafkacat) Utility to view the record header and determine why the record failed. Errors are also sent to **Connect Reporter**.
So I tried Connect Reporter, but the success-responses and error-responses topics were not created.
How Can I see the headers of failed records without kcat ???? is it possible??

Answer 1

Depending on your version of Kafka, you can use console consumer
kafka-console-consumer ... --property print.headers=true
Or you can write your own consumer if you cannot use kcat