[KAFKA-5712] Expose ProducerConfig in the KafkaProducer clients

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Information Provided
• Component/s: clients
• Assignee: Unassigned
• Reporter: Leo Xuzhang Lin
• Reviewer: Bill Bejeck
• Created: 08/Aug/17 17:22
• Updated: 03/Oct/19 17:04
• Resolved: 03/Oct/19 16:45

Description

There is no easy way to introspect into a Producer's configuration.

For important configurations such as `acks` and `retries`, it is useful to be able to verify programmatically the value for those configurations.

Since the ProducerConfig object is read only, there seems to be no harm to expose that in a getter.

ProducerConfig value in KafkaProducer:
https://github.com/apache/kafka/blob/0.11.0/clients/src/main/java/org/apache/kafka/clients/producer/KafkaProducer.java#L246