Hi Xiao, > New metric pulsar_subscription_back_log_size
The metric name is better as `pulsar_subscription_backlog_size`, to keep consistent with `pulsar_storage_backlog_size`. > Since 0 is a valid value for subscription backlog size, change > subscriptionStats.backlogSize to -1 from 0 if request the stats of topic with > subscriptionBacklogSize=false. I am not sure why we need -1 for the case that this feature is turned off. Does the metric just don't appear in the Prometheus result? Thanks, Haiting On Sun, Jan 15, 2023 at 6:44 PM Jiuming Tao <jm...@streamnative.io.invalid> wrote: > > Hi Xiao, > > Seems `backlogSize` already existed in the `SubscriptionStatsImpl`, but > didn’t expose in Prometheus, > > We just need to expose it in Prometheus. > > It should exposed in Prometheus when the configuration named > `exposeTopicLevelMetricsInPrometheus` and > `exposeSubscriptionBacklogSizeInPrometheus` is enabled. > > +1 > > Thanks, > Tao Jiuming > > > 2022年12月30日 23:25，萧 易客 <km...@live.com> 写道： > > > > can >
