You can find them in https://kafka.apache.org/documentation/#monitoring
I think this is the one you are looking for: Lag in messages per follower replica kafka.server:type=FetcherLagMetrics,name=ConsumerLag,clientId=([-.\w]+),topic=([-.\w]+),partition=([0-9]+) lag should be proportional to the maximum batch size of a produce request. On Mon, Feb 20, 2017 at 5:43 PM, Jun Ma <mj.saber1...@gmail.com> wrote: > Hi Guozhang, > > Thanks for your replay. Could you tell me which one indicates the lag > between follower and leader for a specific partition? > > Thanks, > Jun > > On Mon, Feb 20, 2017 at 4:57 PM, Guozhang Wang <wangg...@gmail.com> wrote: > > > I don't think the metrics have been changed in 0.9.0.1, in fact even in > > 0.10.x they are still the same as stated in: > > > > https://kafka.apache.org/documentation/#monitoring > > > > The mechanism for determine which followers have been dropped out of ISR > > has changed, but the metrics are not. > > > > > > Guozhang > > > > > > On Sun, Feb 19, 2017 at 7:56 PM, Jun MA <mj.saber1...@gmail.com> wrote: > > > > > 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 > > > > > > > > > > -- > > -- Guozhang > > > -- -- Guozhang
