Capture Kafka key without using it as ID

[kmcclellan]

I want to use the topic/partition/offset as the ES document ID while still capturing the Kafka message key for audit/search purposes. Unless I'm mistaken, there doesn't appear to be a way to do this with this connector.

[kmcclellan]

Ideally, all Kafka message metadata should be captured in a way that is searchable: topic, partition, offset, timestamp, headers