Fetcher Lag Metrics

The Fetcher Lag Metrics group contains metrics regarding the lag in the number of messages per follower replica. The metrics available are:

  • Aggregated Fetcher Consumer Lag

Aggregated Fetcher Consumer Lag

This metric aggregates lag in messages per follower replica reported under kafka.server:type=FetcherLagMetrics,name=ConsumerLag,clientId=([-.\w]+),topic=([-.\w]+),partition=([0-9]+) at a broker level. This allows monitoring the broker capability to keep in sync with partitions that it is replicating. The expected value for this metric should be 0 or very low indicating the broker is keeping up with replication. If it is increasing or very high that indicates a problem and should be monitored and investigated.

Please note that brokers would not report this metric if it is not following a partition. For example all topics in the cluster is created with a replication factor of 1.

Need Support
Learn More

Already have an account?
Login to the Console

Experiencing difficulties on the website or console?
Status page for known incidents

Don’t have an account yet?
Sign up for a free trial

Why sign up?
To experience the ease of creating and managing clusters via the Instaclustr Console.