JMX metrics for replica lag time

[Jun MA]

Hi,

I’m looking for the JMX metrics to represent replica lag time for 0.9.0.1. Base 
on the documentation, I can only find 
kafka.server:type=ReplicaFetcherManager,name=MaxLag,clientId=Replica, which is 
max lag in messages btw follower and leader replicas. But since in 0.9.0.1 lag 
in messages is deprecated and replaced with lag time, I’m wondering what is the 
corresponding metrics for this?

Thanks,
Jun