Metric Type
Display Name

Kind, Type, Unit

Description

Labels

Additions

/broker/topics/failed_request_count
Failed requests

CUMULATIVE, INT64, Requests

The number of failed requests.

request_type: The type of request (fetch or produce).

/broker/topics/incoming_message_count
Incoming messages

CUMULATIVE, INT64, n/a

The number of incoming messages in all topics.

/broker/topics/traffic
Traffic

CUMULATIVE, INT64, By

The number of bytes sent and received in all topics.

direction: Data direction, in or out.

/controller/kafka/active
Active controllers

GAUGE, DOUBLE, n/a

The number of active controllers in the cluster.

/controller/kafka/offline_partitions
Offline partitions

GAUGE, DOUBLE, n/a

The number of partitions that don’t have an active leader and are hence not writable or readable.

/controller/leader_elections/election_count
Leader elections

CUMULATIVE, INT64, n/a

The total number of leader elections.

/controller/leader_elections/unclean_count
Stale leader elections

CUMULATIVE, INT64, n/a

The total number of leader elections where the leader is out-of-sync.

/log/flush_count
Flushes

CUMULATIVE, INT64, n/a

The number of log flushes.

/network/request_count
Requests

CUMULATIVE, INT64, Requests

The number of requests.

request_type: The type of request (fetch or produce).

/purgatory/num_delayed_requests
Delayed purgatory requests

GAUGE, DOUBLE, Requests

The current number of delayed requests in purgatory.

request_type: The type of request (fetch or produce).

/purgatory/size
Purgatory requests

GAUGE, DOUBLE, Requests

The current number of requests in purgatory.

request_type: The type of the request, fetch or produce.

/replica_fetcher/max_lag
Maximum lag

GAUGE, DOUBLE, n/a

The maximum lag in messages between the follower and leader replicas.

/replica_fetcher/min_fetch_rate
Minimum fetch rate

GAUGE, DOUBLE, 1/s

The minimum rate at which the follower replicas send fetch requests to the leaders.

/replica_manager/isr/expand_count
Gaining replicas

CUMULATIVE, INT64, n/a

The number of replicas catching up (ISR = in-sync replica).

/replica_manager/isr/shrink_count
Lagging replicas

CUMULATIVE, INT64, n/a

The number of replicas lagging behind (ISR = in-sync replica).

/replica_manager/leaders
Leaders

GAUGE, DOUBLE, n/a

The current number of leaders on this broker.

/replica_manager/partitions
Partitions

GAUGE, DOUBLE, n/a

The current number of partitions on this broker.

/replica_manager/under_replicated_partitions
Unreliable partitions

GAUGE, DOUBLE, n/a

The current number of under-replicated partitions.