Ingest/kafka/lag not being received


We are running the Kafka indexing service on druid 0.10.1. The indexing service is running fine and we are seeing ingestion metrics like ingest/events/processed but the ingest/kafka/lag metric is never seen. In the case that the lag metric is only sent when there is lag, I overloaded the indexing service and saw that there was a lag by looking at the Supervisors status, however still no lag metric is seen. Any ideas on why this could be happening?