opentelemetry_semantic_conventions::attribute

Constant MESSAGING_KAFKA_MESSAGE_KEY

Source 
pub const MESSAGING_KAFKA_MESSAGE_KEY: &str = "messaging.kafka.message.key";
Expand description

Message keys in Kafka are used for grouping alike messages to ensure they’re processed on the same partition. They differ from messaging.message.id in that they’re not unique. If the key is null, the attribute MUST NOT be set.

§Notes

If the key type is not string, it’s string representation has to be supplied for the attribute. If the key has no unambiguous, canonical string form, don’t include its value.

§Examples

  • "myKey"