Pulsar metrics

Pulsar exposes the following metrics in Prometheus format. You can monitor your clusters with those metrics.

• • Pulsar Functions
  • Connectors
  • Proxy
  • Pulsar SQL Worker
  • Pulsar transaction

The following types of metrics are available:

• Counter: a cumulative metric that represents a single monotonically increasing counter. The value increases by default. You can reset the value to zero or restart your cluster.
• Gauge: a metric that represents a single numerical value that can arbitrarily go up and down.
• Histogram: a histogram samples observations (usually things like request durations or response sizes) and counts them in configurable buckets. The _bucket suffix is the number of observations within a histogram bucket, configured with parameter {le="<upper inclusive bound>"}. The _count suffix is the number of observations, shown as a time series and behaves like a counter. The _sum suffix is the sum of observed values, also shown as a time series and behaves like a counter. These suffixes are together denoted by _* in this doc.
• Summary: similar to a histogram, a summary samples observations (usually things like request durations and response sizes). While it also provides a total count of observations and a sum of all observed values, it calculates configurable quantiles over a sliding time window.

ZooKeeper

The ZooKeeper metrics are exposed under "/metrics" at port 8000. You can use a different port by configuring the metricsProvider.httpPort in conf/zookeeper.conf.

ZooKeeper provides a New Metrics System since 3.6.0. For more detailed metrics, refer to the ZooKeeper Monitor Guide.

BookKeeper

The BookKeeper metrics are exposed under "/metrics" at port 8000. You can change the port by updating prometheusStatsHttpPort in the bookkeeper.conf configuration file.

Server metrics

Name	Type	Description
bookie_SERVER_STATUS	Gauge	The server status for bookie server. 1: the bookie is running in writable mode. 0: the bookie is running in read-only mode.
bookkeeper_server_ADD_ENTRY_count	Counter	The total number of ADD_ENTRY requests received at the bookie. The success label is used to distinguish between successes and failures.
bookkeeper_server_READ_ENTRY_count	Counter	The total number of READ_ENTRY requests received at the bookie. The success label is used to distinguish between successes and failures.
bookie_WRITE_BYTES	Counter	The total number of bytes written to the bookie.
bookie_READ_BYTES	Counter	The total number of bytes read from the bookie.
bookkeeper_server_ADD_ENTRY_REQUEST	Summary	The summary of request latency of ADD_ENTRY requests at the bookie. The success label is used to distinguish between successes and failures.
bookkeeper_server_READ_ENTRY_REQUEST	Summary	The summary of request latency of READ_ENTRY requests at the bookie. The success label is used to distinguish between successes and failures.
bookkeeperserver_BookieReadThreadPool_queue{thread_id}	Gauge	The number of requests to be processed in a read thread queue.
bookkeeper_server_BookieReadThreadPool_task_queued	Summary	The waiting time of a task to be processed in a read thread queue.
bookkeeper_server_BookieReadThreadPool_task_execution	Summary	The execution time of a task in a read thread queue.

Journal metrics

Name	Type	Description
bookie_journal_JOURNAL_SYNC_count	Counter	The total number of journal fsync operations happening at the bookie. The success label is used to distinguish between successes and failures.
bookie_journal_JOURNAL_QUEUE_SIZE	Gauge	The total number of requests pending in the journal queue.
bookie_journal_JOURNAL_FORCE_WRITE_QUEUE_SIZE	Gauge	The total number of force write (fsync) requests pending in the force-write queue.
bookie_journal_JOURNAL_CB_QUEUE_SIZE	Gauge	The total number of callbacks pending in the callback queue.
bookie_journal_JOURNAL_ADD_ENTRY	Summary	The summary of request latency of adding entries to the journal.
bookie_journal_JOURNAL_SYNC	Summary	The summary of fsync latency of syncing data to the journal disk.
bookie_journal_JOURNAL_CREATION_LATENCY	Summary	The latency created by a journal log file.

Storage metrics

Name	Type	Description
bookie_ledgers_count	Gauge	The total number of ledgers stored in the bookie.
bookie_entries_count	Gauge	The total number of entries stored in the bookie.
bookie_write_cache_size	Gauge	The bookie write cache size (in bytes).
bookie_read_cache_size	Gauge	The bookie read cache size (in bytes).
bookie_DELETED_LEDGER_COUNT	Counter	The total number of ledgers deleted since the bookie has started.
bookie_ledger_writable_dirs	Gauge	The number of writable directories in the bookie.
bookie_flush	Gauge	The table flush latency of bookie memory.
bookie_throttled_write_requests	Counter	The number of write requests to be throttled.

Replication metrics

Name	Type	Description
auditor_NUM_UNDER_REPLICATED_LEDGERS	Summary	The distribution of num under_replicated ledgers on each auditor run.
auditor_UNDER_REPLICATED_LEDGERS_TOTAL_SIZE	Summary	The distribution of under_replicated ledgers total size on each auditor run.
auditor_URL_PUBLISH_TIME_FOR_LOST_BOOKIE	Summary	The latency distribution of publishing under replicated ledgers for lost bookies.
auditor_BOOKIE_TO_LEDGERS_MAP_CREATION_TIME	Summary	The latency distribution of creating bookies-to-ledgers map.
auditor_CHECK_ALL_LEDGERS_TIME	Summary	The latency distribution of checking all ledgers.
auditor_PLACEMENT_POLICY_CHECK_TIME	Summary	The latency distribution of placementPolicy check.
auditor_REPLICAS_CHECK_TIME	Summary	The latency distribution of replicas check.
auditor_AUDIT_BOOKIES_TIME	Summary	The latency distribution of auditing all the bookies.
auditor_NUM_LEDGERS_CHECKED	Counter	The number of ledgers checked by the auditor.
auditor_NUM_FRAGMENTS_PER_LEDGER	Summary	The distribution of number of fragments per ledger.
auditor_NUM_BOOKIES_PER_LEDGER	Summary	The distribution of number of bookies per ledger.
auditor_NUM_BOOKIE_AUDITS_DELAYED	Counter	The number of bookie-audits delayed.
auditor_NUM_DELAYED_BOOKIE_AUDITS_DELAYES_CANCELLED	Counter	The number of delayed-bookie-audits cancelled.
auditor_NUM_LEDGERS_NOT_ADHERING_TO_PLACEMENT_POLICY	Gauge	The number of ledgers not adhering to placement policy found in placement policy check.
auditor_NUM_LEDGERS_SOFTLY_ADHERING_TO_PLACEMENT_POLICY	Gauge	The number of ledgers softly adhering to placement policy found in placement policy check.
auditor_NUM_UNDERREPLICATED_LEDGERS_ELAPSED_RECOVERY_GRACE_PERIOD	Gauge	The number of underreplicated ledgers elapsed recovery grace period.
auditor_NUM_LEDGERS_HAVING_NO_REPLICA_OF_AN_ENTRY	Gauge	The number of ledgers having an entry with all the replicas missing.
auditor_NUM_LEDGERS_HAVING_LESS_THAN_AQ_REPLICAS_OF_AN_ENTRY	Gauge	The number of ledgers having an entry with less than AQ number of replicas, this doesn't include ledgers counted towards numLedgersHavingNoReplicaOfAnEntry.
auditor_NUM_LEDGERS_HAVING_LESS_THAN_WQ_REPLICAS_OF_AN_ENTRY	Gauge	The number of ledgers having an entry with less than WQ number of replicas, this doesn't include ledgers counted towards numLedgersHavingLessThanAQReplicasOfAnEntry.
election_attempts	Counter	The number of auditor election attempts.
replication_worker_NUM_BYTES_READ	Summary	The distribution size of entries read by the replicator.
replication_worker_NUM_ENTRIES_READ	Counter	Number of entries read by the replicator.
replication_worker_NUM_ENTRIES_WRITTEN	Counter	Number of entries written by the replicator.
replication_worker_NUM_BYTES_WRITTEN	Summary	The distribution size of entries written by the replicator.
replication_worker_READ_DATA_LATENCY	Summary	The distribution of latency of read entries by the replicator.
replication_worker_WRITE_DATA_LATENCY	Summary	The distribution of latency of write entries by the replicator.
replication_worker_exceptions	Summary	Replication related exceptions.
replication_worker_rereplicate	Summary	Operation stats of re-replicating ledgers.
replication_worker_NUM_FULL_OR_PARTIAL_LEDGERS_REPLICATED	Counter	The number of ledgers re-replicated.
replication_worker_NUM_DEFER_LEDGER_LOCK_RELEASE_OF_FAILED_LEDGER	Counter	The number of defer-ledger-lock-releases of failed ledgers.
replication_worker_NUM_ENTRIES_UNABLE_TO_READ_FOR_REPLICATION	Counter	The number of entries ReplicationWorker unable to read.

Broker

The broker metrics are exposed under "/metrics/" at port 8080. You can change the port by updating webServicePort to a different port in the broker.conf configuration file.

All the metrics exposed by a broker are labeled with cluster=${pulsar_cluster}. The name of Pulsar cluster is the value of ${pulsar_cluster}, which you have configured in the broker.conf file.

Broker metrics

All the broker metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.

Name	Type	Description
pulsar_ml_cache_evictions	Gauge	The number of cache evictions during the last minute.
pulsar_ml_cache_inserted_entries_total	Counter	The number of entries inserted into the entry cache.
pulsar_ml_cache_evicted_entries_total	Counter	The number of entries evicted from the entry cache.
pulsar_ml_cache_entries	Gauge	The number of entries in the entry cache.
pulsar_ml_cache_hits_rate	Gauge	The number of cache hits per second on the broker side.
pulsar_ml_cache_hits_throughput	Gauge	The amount of data (byte per second) retrieved from the cache on the broker side.
pulsar_ml_cache_misses_rate	Gauge	The number of cache missed per second on the broker side.
pulsar_ml_cache_misses_throughput	Gauge	The amount of data (byte per second) that cannot be retrieved from the cache on the broker side.
pulsar_ml_cache_pool_active_allocations	Gauge	The number of currently active allocations in direct arena.
pulsar_ml_cache_pool_active_allocations_huge	Gauge	The number of currently active huge allocation in direct arena.
pulsar_ml_cache_pool_active_allocations_normal	Gauge	The number of currently active normal allocations in direct arena.
pulsar_ml_cache_pool_active_allocations_small	Gauge	The number of currently active small allocations in direct arena.
pulsar_ml_cache_pool_allocated	Gauge	The total allocated memory of chunk lists in direct arena.
pulsar_ml_cache_pool_used	Gauge	The total used memory of chunk lists in direct arena.
pulsar_ml_cache_used_size	Gauge	The size used to store the payloads of entries (in bytes).
pulsar_ml_count	Gauge	The number of currently opened managed ledgers.
topic_load_times (deprecated)	Summary	The topic load latency calculated in milliseconds.
pulsar_topic_load_times	Summary	The topic load latency calculated in milliseconds.
pulsar_active_connections	Gauge	The number of active connections.
pulsar_connection_created_total_count	Gauge	The total number of connections.
pulsar_connection_create_success_count	Gauge	The number of successfully created connections.
pulsar_connection_create_fail_count	Gauge	The number of failed connections.
pulsar_connection_closed_total_count	Gauge	The total number of closed connections.
pulsar_broker_throttled_connections	Gauge	The number of throttled connections.
pulsar_broker_throttled_connections_global_limit	Gauge	The number of throttled connections due to per-connection limit.
pulsar_broker_topics_count	Gauge	The number of Pulsar topics in this broker.
pulsar_broker_subscriptions_count	Gauge	The number of Pulsar subscriptions in this broker.
pulsar_broker_producers_count	Gauge	The number of active producers connected to this broker.
pulsar_broker_consumers_count	Gauge	The number of active consumers connected to this broker.
pulsar_broker_rate_in	Gauge	The total message rate coming into this broker (message per second).
pulsar_broker_rate_out	Gauge	The total message rate going out from this broker (message per second).
pulsar_broker_throughput_in	Gauge	The total throughput coming into this broker (byte per second).
pulsar_broker_throughput_out	Gauge	The total throughput going out from this broker (byte per second).
pulsar_broker_storage_size	Gauge	The total storage size of all topics in this broker (in bytes).
pulsar_broker_storage_logical_size	Gauge	The storage size of all topics in this broker without replicas (in bytes).
pulsar_broker_storage_write_rate	Gauge	The total message batches (entries) written to the storage for this broker (message batch per second).
pulsar_broker_storage_read_rate	Gauge	The total message batches (entries) read from the storage for this broker (message batch per second).
pulsar_broker_msg_backlog	Gauge	The total number of message backlogs in this broker (entries).

BookKeeper client metrics

The BookKeeper client metrics is disabled by default. Set bookkeeperClientExposeStatsToPrometheus=true in broker.conf to expose the BookKeeper client metrics. Suppose you want to expose PerChannel BookKeeper client metrics, which allows you to get the metrics for each bookie that the BookKeeper client connected. You can set bookkeeperClientLimitStatsLogging=true in broker.conf. Note that enabling the PerChannel BookKeeper client metrics might introduce performance issues in high-load situations.

All the BookKeeper client metrics are labeled with the following label:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you configured in broker.conf.

Name	Type	Description
pulsar_managedLedger_client_bookkeeper_client_BOOKIE_QUARANTINE	Counter	The number of bookie clients to be quarantined.
pulsar_managedLedger_client_BookKeeperClientWorker_task_execution	Summary	The task execution latency calculated in milliseconds
pulsar_managedLedger_client_BookKeeperClientWorker_task_queued	Summary	The task queued latency calculated in milliseconds
pulsar_managedLedger_client_bookkeeper_client_ADD_ENTRY	Summary	Add entry latency calculated in milliseconds
pulsar_managedLedger_client_bookkeeper_client_READ_ENTRY	Summary	Read entry latency calculated in milliseconds
pulsar_managedLedger_client_bookkeeper_client_READ_LAC	Summary	Read Last Add Confirmed request latency calculated in milliseconds
pulsar_managedLedger_client_bookkeeper_client_WRITE_LAC	Summary	Write Last Add Confirmed request latency calculated in milliseconds

Namespace metrics

Namespace metrics are only exposed when exposeTopicLevelMetricsInPrometheus is set to false.

All the namespace metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you configured in broker.conf.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.

Name	Type	Description
pulsar_topics_count	Gauge	The number of Pulsar topics of the namespace owned by this broker.
pulsar_subscriptions_count	Gauge	The number of Pulsar subscriptions of the namespace served by this broker.
pulsar_producers_count	Gauge	The number of active producers of the namespace connected to this broker.
pulsar_consumers_count	Gauge	The number of active consumers of the namespace connected to this broker.
pulsar_rate_in	Gauge	The total message rate of the namespace coming into this broker (message per second).
pulsar_rate_out	Gauge	The total message rate of the namespace going out from this broker (message per second).
pulsar_throughput_in	Gauge	The total throughput of the namespace coming into this broker (byte per second).
pulsar_throughput_out	Gauge	The total throughput of the namespace going out from this broker (byte per second).
pulsar_consumer_msg_ack_rate	Gauge	The total message acknowledgment rate of the namespace owned by this broker (message per second).
pulsar_storage_size	Gauge	The total storage size of the topics in this namespace owned by this broker (bytes).
pulsar_storage_logical_size	Gauge	The storage size of topics in the namespace owned by the broker without replicas (in bytes).
pulsar_storage_backlog_size	Gauge	The total backlog size of the topics of this namespace owned by this broker (in bytes).
pulsar_storage_offloaded_size	Gauge	The total amount of the data in this namespace offloaded to the tiered storage (bytes).
pulsar_storage_write_rate	Gauge	The total message batches (entries) written to the storage for this namespace (message batch per second).
pulsar_storage_read_rate	Gauge	The total message batches (entries) read from the storage for this namespace (message batch per second).
pulsar_subscription_delayed	Gauge	The total message batches (entries) are delayed for dispatching.
pulsarstorage_write_latency_le*	Histogram	The entry rate of a namespace that the storage write latency is smaller with a given threshold. Available thresholds: pulsar_storage_write_latency_le_0_5: <= 0.5ms pulsar_storage_write_latency_le_1: <= 1ms pulsar_storage_write_latency_le_5: <= 5ms pulsar_storage_write_latency_le_10: <= 10ms pulsar_storage_write_latency_le_20: <= 20ms pulsar_storage_write_latency_le_50: <= 50ms pulsar_storage_write_latency_le_100: <= 100ms pulsar_storage_write_latency_le_200: <= 200ms pulsar_storage_write_latency_le_1000: <= 1s pulsar_storage_write_latency_le_overflow: > 1s
pulsarentry_size_le*	Histogram	The entry rate of a namespace that the entry size is smaller with a given threshold. Available thresholds: pulsar_entry_size_le_128: <= 128 bytes pulsar_entry_size_le_512: <= 512 bytes pulsar_entry_size_le_1_kb: <= 1 KB pulsar_entry_size_le_2_kb: <= 2 KB pulsar_entry_size_le_4_kb: <= 4 KB pulsar_entry_size_le_16_kb: <= 16 KB pulsar_entry_size_le_100_kb: <= 100 KB pulsar_entry_size_le_1_mb: <= 1 MB pulsar_entry_size_le_overflow: > 1 MB
pulsar_delayed_message_index_size_bytes	Gauge	The total memory size allocated by DelayedDeliveryTracker of the namespace owned by this broker (in bytes).
pulsar_delayed_message_index_bucket_total	Gauge	The number of delayed message index buckets (immutable buckets + LastMutableBucket )
pulsar_delayed_message_index_loaded	Gauge	The total number of delayed message indexes for in the memory.
pulsar_delayed_message_index_bucket_snapshot_size_bytes	Gauge	The total size of delayed message index bucket snapshot (in bytes).
pulsar_delayed_message_index_bucket_op_count	Counter	The total number of operation delayed message index bucket snapshots. The state label can be succeed,failed, andall (all means the total number of all states) and the type label can be create,load,delete, and merge.
pulsar_delayed_message_index_bucket_op_latency_ms	Histogram	The latency of delayed message index bucket snapshot operation with a given quantile (threshold). The type label can be create,load,delete, and merge The label quantile can be: quantile="50" is operation latency between (0ms, 50ms] quantile="100" is operation latency between (50ms, 100ms] quantile="500" is operation latency between (100ms, 500ms] quantile="1000" is operation latency between (500ms, 1s] quantile="5000" is operation latency between (1s, 5s] quantile="30000" is operation latency between (5s, 30s] quantile="60000" is operation latency between (30s, 60s] quantile="overflow" is operation latency > 1m

Topic metrics

Topic metrics are only exposed when exposeTopicLevelMetricsInPrometheus is set to true.

All the topic metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you configured in broker.conf.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.
• topic: topic=${pulsar_topic}. ${pulsar_topic} is the topic name.

Name	Type	Description
pulsar_subscriptions_count	Gauge	The number of Pulsar subscriptions of the topic served by this broker.
pulsar_producers_count	Gauge	The number of active producers of the topic connected to this broker.
pulsar_consumers_count	Gauge	The number of active consumers of the topic connected to this broker.
pulsar_rate_in	Gauge	The total message rate of the topic coming into this broker (message per second).
pulsar_rate_out	Gauge	The total message rate of the topic going out from this broker (message per second).
pulsar_publish_rate_limit_times	Gauge	The number of times the publish rate limit is triggered.
pulsar_throughput_in	Gauge	The total throughput of the topic coming into this broker (byte per second).
pulsar_throughput_out	Gauge	The total throughput of the topic going out from this broker (byte per second).
pulsar_consumer_msg_ack_rate	Gauge	The total message acknowledgment rate of the topic connected to this broker (message per second).
pulsar_storage_size	Gauge	The total storage size of the topics in this topic owned by this broker (bytes).
pulsar_storage_logical_size	Gauge	The storage size of topics in the namespace owned by the broker without replicas (in bytes).
pulsar_storage_backlog_size	Gauge	The total backlog size of the topics of this topic owned by this broker (in bytes).
pulsar_storage_offloaded_size	Gauge	The total amount of the data in this topic offloaded to the tiered storage (bytes).
pulsar_storage_backlog_quota_limit	Gauge	The total amount of the data in this topic that limit the backlog quota (bytes).
pulsar_storage_write_rate	Gauge	The total message batches (entries) written to the storage for this topic (message batch per second).
pulsar_storage_read_rate	Gauge	The total message batches (entries) read from the storage for this topic (message batch per second).
pulsar_subscription_delayed	Gauge	The total message batches (entries) are delayed for dispatching.
pulsarstorage_write_latency_le*	Histogram	The entry rate of a topic that the storage write latency is smaller with a given threshold. Available thresholds: pulsar_storage_write_latency_le_0_5: <= 0.5ms pulsar_storage_write_latency_le_1: <= 1ms pulsar_storage_write_latency_le_5: <= 5ms pulsar_storage_write_latency_le_10: <= 10ms pulsar_storage_write_latency_le_20: <= 20ms pulsar_storage_write_latency_le_50: <= 50ms pulsar_storage_write_latency_le_100: <= 100ms pulsar_storage_write_latency_le_200: <= 200ms pulsar_storage_write_latency_le_1000: <= 1s pulsar_storage_write_latency_le_overflow: > 1s
pulsarentry_size_le*	Histogram	The entry rate of a topic that the entry size is smaller with a given threshold. Available thresholds: pulsar_entry_size_le_128: <= 128 bytes pulsar_entry_size_le_512: <= 512 bytes pulsar_entry_size_le_1_kb: <= 1 KB pulsar_entry_size_le_2_kb: <= 2 KB pulsar_entry_size_le_4_kb: <= 4 KB pulsar_entry_size_le_16_kb: <= 16 KB pulsar_entry_size_le_100_kb: <= 100 KB pulsar_entry_size_le_1_mb: <= 1 MB pulsar_entry_size_le_overflow: > 1 MB
pulsar_in_bytes_total	Counter	The total number of messages in bytes received for this topic.
pulsar_in_messages_total	Counter	The total number of messages received for this topic.
pulsar_out_bytes_total	Counter	The total number of messages in bytes read from this topic.
pulsar_out_messages_total	Counter	The total number of messages read from this topic.
pulsar_compaction_removed_event_count	Gauge	The total number of removed events of the compaction.
pulsar_compaction_succeed_count	Gauge	The total number of successes of the compaction.
pulsar_compaction_failed_count	Gauge	The total number of failures of the compaction.
pulsar_compaction_duration_time_in_mills	Gauge	The duration time of the compaction.
pulsar_compaction_read_throughput	Gauge	The read throughput of the compaction.
pulsar_compaction_write_throughput	Gauge	The write throughput of the compaction.
pulsarcompaction_latency_le*	Histogram	The compaction latency with given quantile. Available thresholds: pulsar_compaction_latency_le_0_5: <= 0.5ms pulsar_compaction_latency_le_1: <= 1ms pulsar_compaction_latency_le_5: <= 5ms pulsar_compaction_latency_le_10: <= 10ms pulsar_compaction_latency_le_20: <= 20ms pulsar_compaction_latency_le_50: <= 50ms pulsar_compaction_latency_le_100: <= 100ms pulsar_compaction_latency_le_200: <= 200ms pulsar_compaction_latency_le_1000: <= 1s pulsar_compaction_latency_le_overflow: > 1s
pulsar_compaction_compacted_entries_count	Gauge	The total number of the compacted entries.
pulsar_compaction_compacted_entries_size	Gauge	The total size of the compacted entries.
pulsar_txn_tb_active_total	Gauge	The number of active transactions on this topic.
pulsar_txn_tb_aborted_total	Counter	The number of aborted transactions on the topic.
pulsar_txn_tb_committed_total	Counter	The number of committed transactions on the topic.
pulsar_delayed_message_index_size_bytes	Gauge	The total memory size allocated by DelayedDeliveryTracker of the topic owned by this broker (in bytes).
pulsar_delayed_message_index_bucket_total	Gauge	The number of delayed message index buckets (immutable buckets + LastMutableBucket )
pulsar_delayed_message_index_loaded	Gauge	The total number of delayed message indexes for in the memory.
pulsar_delayed_message_index_bucket_snapshot_size_bytes	Gauge	The total size of delayed message index bucket snapshot (in bytes).
pulsar_delayed_message_index_bucket_op_count	Counter	The total number of operation delayed message index bucket snapshots. The state label can be succeed,failed, andall (all means the total number of all states) and the type label can be create,load,delete, and merge.
pulsar_delayed_message_index_bucket_op_latency_ms	Histogram	The latency of delayed message index bucket snapshot operation with a given quantile (threshold). The labeltype label can be create,load,delete, and merge The label quantile can be: quantile="50" is operation latency between (0ms, 50ms] quantile="100" is operation latency between (50ms, 100ms] quantile="500" is operation latency between (100ms, 500ms] quantile="1000" is operation latency between (500ms, 1s] quantile="5000" is operation latency between (1s, 5s] quantile="30000" is operation latency between (5s, 30s] quantile="60000" is operation latency between (30s, 60s] quantile="overflow" is operation latency > 1m

Replication metrics

If a namespace is configured to be replicated among multiple Pulsar clusters, the corresponding replication metrics is also exposed when replicationMetricsEnabled is enabled.

All the replication metrics are also labelled with remoteCluster=${pulsar_remote_cluster}.

Name	Type	Description
pulsar_replication_rate_in	Gauge	The total message rate of the namespace replicating from remote cluster (messages/second).
pulsar_replication_rate_out	Gauge	The total message rate of the namespace replicating to remote cluster (messages/second).
pulsar_replication_throughput_in	Gauge	The total throughput of the namespace replicating from remote cluster (bytes/second).
pulsar_replication_throughput_out	Gauge	The total throughput of the namespace replicating to remote cluster (bytes/second).
pulsar_replication_backlog	Gauge	The total backlog of the namespace replicating to remote cluster (messages).
pulsar_replication_rate_expired	Gauge	Total rate of messages expired (messages/second).
pulsar_replication_connected_count	Gauge	The count of replication-subscriber up and running to replicate to remote cluster.
pulsar_replication_delay_in_seconds	Gauge	Time in seconds from the time a message was produced to the time when it is about to be replicated.

Topic lookup metrics

Name	Type	Description
pulsar_broker_load_manager_bundle_assignment	Gauge	The summary of latency of bundles ownership operations.
pulsar_broker_lookup	Gauge	The latency of all lookup operations.
pulsar_broker_lookup_redirects	Gauge	The number of lookup redirected requests.
pulsar_broker_lookup_answers	Gauge	The number of lookup responses (i.e. not redirected requests).
pulsar_broker_lookup_failures	Gauge	The number of lookup failures.
pulsar_broker_lookup_pending_requests	Gauge	The number of pending lookups in broker. When it is up to the threshold, new requests are rejected.
pulsar_broker_topic_load_pending_requests	Gauge	The load of pending topic operations.

ManagedLedger metrics

All the managedLedger metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.
• quantile: quantile=${quantile}. Quantile is only for Histogram type metric, and represents the threshold for given Buckets.

Name	Type	Description
pulsar_ml_AddEntryBytesRate	Gauge	The B/s rate of messages added
pulsar_ml_AddEntryWithReplicasBytesRate	Gauge	The B/s rate of messages added with replicas
pulsar_ml_AddEntryErrors	Gauge	The number of addEntry requests that failed
pulsar_ml_AddEntryLatencyBuckets	Histogram	The latency of adding a ledger entry with a given quantile (threshold), including time spent waiting in queue on the broker side. Available quantile: quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms] quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms] quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms] quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms] quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms] quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms] quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms] quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms] quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]
pulsar_ml_AddEntryLatencyBuckets_OVERFLOW	Gauge	The number of times the AddEntryLatency is longer than 1 second
pulsar_ml_AddEntryMessagesRate	Gauge	The msg/s rate of messages added
pulsar_ml_AddEntrySucceed	Gauge	The number of addEntry requests that succeeded
pulsar_ml_EntrySizeBuckets	Histogram	The added entry size of a ledger with a given quantile. Available quantile: quantile="0.0_128.0" is EntrySize between (0byte, 128byte] quantile="128.0_512.0" is EntrySize between (128byte, 512byte] quantile="512.0_1024.0" is EntrySize between (512byte, 1KB] quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB] quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB] quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB] quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB] quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]
pulsar_ml_EntrySizeBuckets_OVERFLOW	Gauge	The number of times the EntrySize is larger than 1MB
pulsar_ml_LedgerSwitchLatencyBuckets	Histogram	The ledger switch latency with a given quantile. Available quantile: quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms] quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms] quantile="1.0_5.0" is EntrySize between (1ms, 5ms] quantile="5.0_10.0" is EntrySize between (5ms, 10ms] quantile="10.0_20.0" is EntrySize between (10ms, 20ms] quantile="20.0_50.0" is EntrySize between (20ms, 50ms] quantile="50.0_100.0" is EntrySize between (50ms, 100ms] quantile="100.0_200.0" is EntrySize between (100ms, 200ms] quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]
pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW	Gauge	The number of times the ledger switch latency is longer than 1 second
pulsar_ml_LedgerAddEntryLatencyBuckets	Histogram	The latency for bookie client to persist a ledger entry from broker to BookKeeper service with a given quantile (threshold). Available quantile: quantile="0.0_0.5" is LedgerAddEntryLatency between (0.0ms, 0.5ms] quantile="0.5_1.0" is LedgerAddEntryLatency between (0.5ms, 1.0ms] quantile="1.0_5.0" is LedgerAddEntryLatency between (1ms, 5ms] quantile="5.0_10.0" is LedgerAddEntryLatency between (5ms, 10ms] quantile="10.0_20.0" is LedgerAddEntryLatency between (10ms, 20ms] quantile="20.0_50.0" is LedgerAddEntryLatency between (20ms, 50ms] quantile="50.0_100.0" is LedgerAddEntryLatency between (50ms, 100ms] quantile="100.0_200.0" is LedgerAddEntryLatency between (100ms, 200ms] quantile="200.0_1000.0" is LedgerAddEntryLatency between (200ms, 1s]
pulsar_ml_LedgerAddEntryLatencyBuckets_OVERFLOW	Gauge	The number of times the LedgerAddEntryLatency is longer than 1 second
pulsar_ml_MarkDeleteRate	Gauge	The rate of mark-delete ops/s
pulsar_ml_NumberOfMessagesInBacklog	Gauge	The number of backlog messages for all the consumers
pulsar_ml_ReadEntriesBytesRate	Gauge	The B/s rate of messages read
pulsar_ml_ReadEntriesErrors	Gauge	The number of readEntries requests that failed
pulsar_ml_ReadEntriesRate	Gauge	The msg/s rate of messages read
pulsar_ml_ReadEntriesSucceeded	Gauge	The number of readEntries requests that succeeded
pulsar_ml_StoredMessagesSize	Gauge	The total size of the messages in active ledgers (accounting for the multiple copies stored)

Managed cursor acknowledgment state

The acknowledgment state is persistent to the ledger first. When the acknowledgment state fails to be persistent to the ledger, they are persistent to ZooKeeper. To track the stats of acknowledgment, you can configure the metrics for the managed cursor.

All the cursor acknowledgment state metrics are labeled with the following labels:

• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.

• ledger_name: ledger_name=${pulsar_ledger_name}. ${pulsar_ledger_name} is the ledger name.

• cursor_name: ledger_name=${pulsar_cursor_name}. ${pulsar_cursor_name} is the cursor name.

Name	Type	Description
pulsar_ml_cursor_persistLedgerSucceed	Gauge	The number of acknowledgment states that is persistent to a ledger.
pulsar_ml_cursor_persistLedgerErrors	Gauge	The number of ledger errors occurred when acknowledgment states fail to be persistent to the ledger.
pulsar_ml_cursor_persistZookeeperSucceed	Gauge	The number of acknowledgment states that is persistent to ZooKeeper.
pulsar_ml_cursor_persistZookeeperErrors	Gauge	The number of ledger errors occurred when acknowledgment states fail to be persistent to ZooKeeper.
pulsar_ml_cursor_nonContiguousDeletedMessagesRange	Gauge	The number of non-contiguous deleted messages ranges.
pulsar_ml_cursor_writeLedgerSize	Gauge	The size of write to ledger.
pulsar_ml_cursor_writeLedgerLogicalSize	Gauge	The size of write to ledger (accounting for without replicas).
pulsar_ml_cursor_readLedgerSize	Gauge	The size of read from ledger.

Subscription metrics

Subscription metrics are only exposed when exposeTopicLevelMetricsInPrometheus is set to true.

All the subscription metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.
• topic: topic=${pulsar_topic}. ${pulsar_topic} is the topic name.
• subscription: subscription=${subscription}. ${subscription} is the topic subscription name.

Name	Type	Description
pulsar_subscription_back_log	Gauge	The number of entries (messages/batched-messages) in unacknowledged state for a subscription
pulsar_subscription_back_log_no_delayed	Gauge	The backlog of a subscription that does not contain the delay messages (entries).
pulsar_subscription_delayed	Gauge	The total number of messages are delayed to be dispatched for a subscription (messages).
pulsar_subscription_msg_rate_redeliver	Gauge	The total message rate for message being redelivered (message per second).
pulsar_subscription_unacked_messages	Gauge	The number of entries (messages/batched-messages) dispatched to consumers and are still unacknowledged
pulsar_subscription_blocked_on_unacked_messages	Gauge	Indicate whether a subscription is blocked on unacknowledged messages or not. 1 means the subscription is blocked on waiting for unacknowledged messages to be acked. 0 means the subscription is not blocked on waiting for unacknowledged messages to be acked.
pulsar_subscription_msg_rate_out	Gauge	The total message dispatch rate for a subscription (message per second).
pulsar_subscription_msg_throughput_out	Gauge	The total message dispatch throughput for a subscription (byte per second).
pulsar_subscription_msg_ack_rate	Gauge	The total message acknowledgment rate for a subscription (message per second).
pulsar_subscription_last_expire_timestamp	Gauge	The expiration timestamp of the last message on the subscription.
pulsar_subscription_last_acked_timestamp	Gauge	The timestamp of the last acknowledged message on the subscription.
pulsar_subscription_last_consumed_flow_timestamp	Gauge	The timestamp of the last received consume flow command on the subscription.
pulsar_subscription_last_consumed_timestamp	Gauge	The timestamp of the last consumed message on the subscription.
pulsar_subscription_last_mark_delete_advanced_timestamp	Gauge	The advanced timestamp of the last MarkDelete position on the subscription.
pulsar_subscription_msg_rate_expired	Gauge	The total rate of messages expired on this subscription (message per second).
pulsar_subscription_total_msg_expired	Gauge	The total number of messages expired on this subscription.
pulsar_subscription_msg_drop_rate	Gauge	The rate of messages dropped on this subscription (message per second).
pulsar_subscription_consumers_count	Gauge	The number of connected consumers on this subscription.
pulsar_subscription_filter_processed_msg_count	Counter	The number of messages processed by EntryFilter.
pulsar_subscription_filter_accepted_msg_count	Counter	The number of messages accepted by EntryFilter.
pulsar_subscription_filter_rejected_msg_count	Counter	The number of messages rejected by EntryFilter.
pulsar_subscription_filter_rescheduled_msg_count	Counter	The number of messages rescheduled by EntryFilter.
pulsar_delayed_message_index_size_bytes	Gauge	The total memory size allocated by DelayedDeliveryTracker of the subscription owned by this broker (in bytes).
pulsar_delayed_message_index_bucket_total	Gauge	The number of delayed message index buckets (immutable buckets + LastMutableBucket )
pulsar_delayed_message_index_loaded	Gauge	The total number of delayed message indexes for in the memory.
pulsar_delayed_message_index_bucket_snapshot_size_bytes	Gauge	The total size of delayed message index bucket snapshot (in bytes).
pulsar_delayed_message_index_bucket_op_count	Counter	The total number of operation delayed message index bucket snapshots. The state label can be succeed,failed, andall (all means the total number of all states) and the type label can be create,load,delete, and merge.
pulsar_delayed_message_index_bucket_op_latency_ms	Histogram	The latency of delayed message index bucket snapshot operation with a given quantile (threshold). The labeltype label can be create,load,delete, and merge The label quantile can be: quantile="50" is operation latency between (0ms, 50ms] quantile="100" is operation latency between (50ms, 100ms] quantile="500" is operation latency between (100ms, 500ms] quantile="1000" is operation latency between (500ms, 1s] quantile="5000" is operation latency between (1s, 5s] quantile="30000" is operation latency between (5s, 30s] quantile="60000" is operation latency between (30s, 60s] quantile="overflow" is operation latency > 1m

Consumer metrics

Consumer metrics are only exposed when both exposeTopicLevelMetricsInPrometheus and exposeConsumerLevelMetricsInPrometheus are set to true.

All the consumer metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.
• topic: topic=${pulsar_topic}. ${pulsar_topic} is the topic name.
• subscription: subscription=${subscription}. ${subscription} is the topic subscription name.
• consumer_name: consumer_name=${consumer_name}. ${consumer_name} is the topic consumer name.
• consumer_id: consumer_id=${consumer_id}. ${consumer_id} is the topic consumer id.

Name	Type	Description
pulsar_consumer_msg_rate_redeliver	Gauge	The total message rate for message being redelivered (message per second).
pulsar_consumer_unacked_messages	Gauge	The total number of unacknowledged messages of a consumer (messages).
pulsar_consumer_blocked_on_unacked_messages	Gauge	Indicate whether a consumer is blocked on unacknowledged messages or not. 1 means the consumer is blocked on waiting for unacknowledged messages to be acked. 0 means the consumer is not blocked on waiting for unacknowledged messages to be acked.
pulsar_consumer_msg_rate_out	Gauge	The total message dispatch rate for a consumer (message per second).
pulsar_consumer_msg_ack_rate	Gauge	The total rate of message ack (message per second).
pulsar_consumer_msg_throughput_out	Gauge	The total message dispatch throughput for a consumer (byte per second).
pulsar_consumer_available_permits	Gauge	The available permits for for a consumer.

Managed ledger bookie client metrics

All the managed ledger bookie client metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.

Name	Type	Description
pulsarmanagedLedger_client_bookkeeper_ml_scheduler_completed_tasks*	Gauge	The number of tasks the scheduler executor execute completed. The number of metrics determined by the scheduler executor thread number configured by managedLedgerNumSchedulerThreads in broker.conf.
pulsarmanagedLedger_client_bookkeeper_ml_scheduler_queue*	Gauge	The number of tasks queued in the scheduler executor's queue. The number of metrics determined by the scheduler executor's thread number configured by managedLedgerNumSchedulerThreads in broker.conf.
pulsarmanagedLedger_client_bookkeeper_ml_scheduler_total_tasks*	Gauge	The total number of tasks the scheduler executor received. The number of metrics determined by the scheduler executor's thread number configured by managedLedgerNumSchedulerThreads in broker.conf.
pulsar_managedLedger_client_bookkeeper_ml_scheduler_task_execution	Summary	The scheduler task execution latency calculated in milliseconds.
pulsar_managedLedger_client_bookkeeper_ml_scheduler_task_queued	Summary	The scheduler task queued latency calculated in milliseconds.

Token metrics

All the token metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.

Name	Type	Description
pulsar_expired_token_total	Counter	The number of expired tokens in Pulsar.
pulsar_expiring_token_minutes	Histogram	The remaining time of expiring tokens in minutes.

Authentication metrics

All the authentication metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• provider_name: provider_name=${provider_name}. ${provider_name} is the class name of the authentication provider.
• auth_method: auth_method=${auth_method}. ${auth_method} is the authentication method of the authentication provider.
• reason: reason=${reason}. ${reason} is the reason for failing authentication operation. (This label is only for pulsar_authentication_failures_total.)

Name	Type	Description
pulsar_authentication_success_total	Counter	The number of successful authentication operations.
pulsar_authentication_failures_total	Counter	The number of failing authentication operations.

Connection metrics

All the connection metrics are labelled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• broker: broker=${advertised_address}. ${advertised_address} is the advertised address of the broker.
• metric: metric=${metric}. ${metric} is the connection metric collective name.

Name	Type	Description
pulsar_active_connections	Gauge	The number of active connections.
pulsar_connection_created_total_count	Gauge	The total number of connections.
pulsar_connection_create_success_count	Gauge	The number of successfully created connections.
pulsar_connection_create_fail_count	Gauge	The number of failed connections.
pulsar_connection_closed_total_count	Gauge	The total number of closed connections.
pulsar_broker_throttled_connections	Gauge	The number of throttled connections.
pulsar_broker_throttled_connections_global_limit	Gauge	The number of throttled connections because of per-connection limit.

Jetty metrics

For a functions-worker running separately from brokers, its Jetty metrics are only exposed when includeStandardPrometheusMetrics is set to true.

All the jetty metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.

Name	Type	Description
jetty_requests_total	Counter	Number of requests.
jetty_requests_active	Gauge	Number of requests currently active.
jetty_requests_active_max	Gauge	Maximum number of requests that have been active at once.
jetty_request_time_max_seconds	Gauge	Maximum time spent handling requests.
jetty_request_time_seconds_total	Counter	Total time spent in all request handling.
jetty_dispatched_total	Counter	Number of dispatches.
jetty_dispatched_active	Gauge	Number of dispatches currently active.
jetty_dispatched_active_max	Gauge	Maximum number of active dispatches being handled.
jetty_dispatched_time_max	Gauge	Maximum time spent in dispatch handling.
jetty_dispatched_time_seconds_total	Counter	Total time spent in dispatch handling.
jetty_async_requests_total	Counter	Total number of async requests.
jetty_async_requests_waiting	Gauge	Currently waiting async requests.
jetty_async_requests_waiting_max	Gauge	Maximum number of waiting async requests.
jetty_async_dispatches_total	Counter	Number of requests that have been asynchronously dispatched.
jetty_expires_total	Counter	Number of async requests that have expired.
jetty_responses_total	Counter	Number of responses, labeled by status code. The code label can be "1xx", "2xx", "3xx", "4xx", or "5xx".
jetty_stats_seconds	Gauge	Time in seconds stats have been collected for.
jetty_responses_bytes_total	Counter	Total number of bytes across all responses.

Schema metrics

For a functions-worker running separately from brokers, its schema metrics are only exposed when includeStandardPrometheusMetrics is set to true.

All the schema metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.

Name	Type	Description
pulsar_schema_del_ops_failed_total	Counter	Number of failed operations to delete schemas.
pulsar_schema_get_ops_failed_total	Counter	Number of failed operations to get schemas.
pulsar_schema_put_ops_failed_total	Counter	Number of failed operations to send schemas.
pulsar_schema_compatible_total	Counter	Number of compatible schemas.
pulsar_schema_incompatible_total	Counter	Number of incompatible schemas.
pulsar_schema_del_ops_latency	Summary	Latency of successful operations to delete schemas.
pulsar_schema_get_ops_latency	Summary	Latency of successful operations to get schemas.
pulsar_schema_put_ops_latency	Summary	Latency of successful operations to send schemas.

Offload metrics

All the offload metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you configured in broker.conf.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.
• topic: topic=${pulsar_topic}. ${pulsar_topic} is the topic name.

Name	Type	Description
pulsar_ledgeroffloader_offload_error	Counter	The number of failed operations to offload.
pulsar_ledgeroffloader_offload_rate	Gauge	The rate of offloading(byte per second).
pulsar_ledgeroffloader_read_offload_error	Counter	The number of failed operations to read offload ledgers.
pulsar_ledgeroffloader_read_offload_rate	Gauge	The rate of reading entries from offload ledgers(byte per second).
pulsar_ledgeroffloader_write_storage_error	Counter	The number of failed operations to write to storage.
pulsar_ledgeroffloader_read_offload_index_latency	Summary	The latency of reading index from offload ledgers.
pulsar_ledgeroffloader_read_offload_data_latency	Summary	The latency of reading data from offload ledgers.
pulsar_ledgeroffloader_read_ledger_latency	Summary	The latency of reading entries from BookKeeper.
pulsar_ledgeroffloader_delete_offload_ops	Counter	The total number of successful and failed operations to delete offload ledgers.

Web service executor metrics

For functions workers running separately from brokers, their Jetty metrics are only exposed when includeStandardPrometheusMetrics is set to true.

All the web service executor metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.

Name	Type	Description
pulsar_web_executor_max_threads	GAUGE	The max threads of pulsar-web thread pool
pulsar_web_executor_min_threads	GAUGE	The min threads of pulsar-web thread pool
pulsar_web_executor_idle_threads	GAUGE	The idle threads of pulsar-web thread pool
pulsar_web_executor_active_threads	GAUGE	The number of threads performing tasks of pulsar-web thread pool
pulsar_web_executor_current_threads	GAUGE	The number of threads in the pulsar-web thread pool

Metadata store metrics

All the metadata store metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you configured in broker.conf.
• name: name=${metadata-store|configuration-metadata-store|state-metadata-store}. ${name} is the metadata store name.

Name	Type	Description
pulsar_metadata_store_ops_latency	Histogram	The latency of getting/deleting/putting data from/to metadata store.
pulsar_metadata_store_put_bytes_total	Counter	The number of data put to metadata store.
pulsar_batch_metadata_store_executor_queue_size	Gauge	The number of blocking operations in metadata store executor.
pulsar_batch_metadata_store_queue_wait_time_ms	Histogram	The waiting time of batch operations.
pulsar_batch_metadata_store_batch_execute_time_ms	Histogram	The duration of the batch execution in milliseconds.
pulsar_batch_metadata_store_batch_size	Histogram	The number of read/write operations in the batch.

JVM Metrics

Process Metrics

Name	Type	Description
process_cpu_seconds_total	Counter	Total user and system CPU time spent in seconds.
process_start_time_seconds	Gauge	Start time of the process since unix epoch in seconds.
process_open_fds	Gauge	Number of open file descriptors.
process_max_fds	Gauge	Maximum number of open file descriptors.
process_virtual_memory_bytes	Gauge	Virtual memory size in bytes.
process_resident_memory_bytes	Gauge	Resident memory size in bytes.

Memory Metrics

Name	Type	Description
jvm_memory_objects_pending_finalization	Gauge	The number of objects waiting in the finalizer queue.
jvm_memory_bytes_used	Gauge	Used bytes of a given JVM memory area.
jvm_memory_bytes_committed	Gauge	Committed (bytes) of a given JVM memory area.
jvm_memory_bytes_max	Gauge	Max (bytes) of a given JVM memory area.
jvm_memory_bytes_init	Gauge	Initial bytes of a given JVM memory area.
jvm_memory_pool_bytes_used	Used bytes of a given JVM memory pool.
jvm_memory_pool_bytes_committed	Gauge	Committed bytes of a given JVM memory pool.
jvm_memory_pool_bytes_max	Gauge	Max bytes of a given JVM memory pool.
jvm_memory_pool_bytes_init	Gauge	Initial bytes of a given JVM memory pool.
jvm_memory_pool_collection_used_bytes	Gauge	Used bytes after the last collection of a given JVM memory pool.
jvm_memory_pool_collection_committed_bytes	Gauge	Committed after last collection bytes of a given JVM memory pool.
jvm_memory_pool_collection_max_bytes	Gauge	Max bytes after the last collection of a given JVM memory pool.
jvm_memory_pool_collection_init_bytes	Gauge	Initial after last collection bytes of a given JVM memory pool.
jvm_memory_pool_allocated_bytes_total	Counter	Total bytes allocated in a given JVM memory pool. Only updated after GC, not continuously.

Buffer Pools Metrics

Name	Type	Description
jvm_buffer_pool_used_bytes	Gauge	Used bytes of a given JVM buffer pool.
jvm_buffer_pool_capacity_bytes	Gauge	Bytes capacity of a given JVM buffer pool.
jvm_buffer_pool_used_buffers	Gauge	Used buffers of a given JVM buffer pool.

Garbage Collectors Metrics

Name	Type	Description
jvm_gc_collection_seconds	Summary	Time spent in a given JVM garbage collector in seconds.

Threads Metrics

Name	Type	Description
jvm_threads_current	Gauge	Current thread count of a JVM
jvm_threads_daemon	Gauge	Daemon thread count of a JVM
jvm_threads_peak	Gauge	Peak thread count of a JVM
jvm_threads_started_total	Counter	Started thread count of a JVM
jvm_threads_deadlocked	Gauge	Cycles of JVM-threads that are in deadlock waiting to acquire object monitors or ownable synchronizers
jvm_threads_deadlocked_monitor	Gauge	Cycles of JVM-threads that are in deadlock waiting to acquire object monitors
jvm_threads_state	Gauge	Current count of threads by state

Classloaders Metrics

Name	Type	Description
jvm_classes_currently_loaded	Gauge	The number of classes that are currently loaded in the JVM
jvm_classes_loaded_total	Counter	The total number of classes that have been loaded since the JVM has started execution
jvm_classes_unloaded_total	Counter	The total number of classes that have been unloaded since the JVM has started execution

Load balancing

This section shows all metrics related to broker load balancing.

note

• Load balancing metrics are not exposed by default. If you want to access load balancing metrics, you need to expose them by setting the following configurations in the broker.conf or standalone.conf file and ensure that your cluster has an active producer or consumer.

  loadManagerClassName=org.apache.pulsar.broker.loadbalance.impl.ModularLoadManagerImpl
  loadBalancerEnabled=true
  exposeBundlesMetricsInPrometheus=true // Add this configuration to standalone.conf

• Metrics with an asterisk (*) are only available in the extensible load balancer.

LoadBalancing metrics

All the loadbalancing metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• broker: broker=${broker}. ${broker} is the IP address of the broker
• metric: metric="loadBalancing".

Name	Type	Description
pulsar_lb_bandwidth_in_usage	Gauge	The broker inbound bandwidth usage (in percent).
pulsar_lb_bandwidth_out_usage	Gauge	The broker outbound bandwidth usage (in percent).
pulsar_lb_cpu_usage	Gauge	The broker cpu usage (in percent).
pulsar_lb_directMemory_usage	Gauge	The broker process direct memory usage (in percent).
pulsar_lb_memory_usage	Gauge	The broker process memory usage (in percent).
pulsar_lb_resource_usage {feature=max}*	Gauge	The max resource usage of the bandwidth, CPU, memory, and direct_memory.
pulsar_lb_resource_usage {feature=max_ema}*	Gauge	The broker load score (WeightedMaxEMA).

BundleUnloading metrics

All the bundleUnloading metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• bundle: bundle=${bundle}. ${bundle} is the bundle range on this broker.
• metric: metric="bundleUnloading".

Name	Type	Description
pulsar_lb_unload_broker_total	Counter	Unload broker count in this bundle unloading
pulsar_lb_unload_bundle_total	Counter	Bundle unload count in this bundle unloading. If the value of pulsar_lb_unload_bundle_total is greater than zero, it means that the bundle has been unloaded.
pulsar_lb_unload_broker_breakdown_total{result, reason}*	Counter	Unload broker breakdown count grouped by result and reason labels.
pulsar_lb_resource_usage_stats{feature=max_ema, stat=avg}*	Gauge	The average of brokers' load scores.
pulsar_lb_resource_usage_stats{feature=max_ema, stat=std}*	Gauge	The standard deviation of brokers' load scores.

BundleSplit metrics

All the bundleUnloading metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• bundle: bundle=${bundle}. ${bundle} is the bundle range on this broker.
• metric: metric="bundlesSplit".

Name	Type	Description
pulsar_lb_bundles_split_total	Counter	The total count of bundle split in this leader broker
pulsar_lb_bundles_split_breakdown_total{result, reason}*	Counter	Bundle split breakdown count grouped by the result and reason labels.

Bundle metrics

All the bundle metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• broker: broker=${broker}. ${broker} is the IP address of the broker
• bundle: bundle=${bundle}. ${bundle} is the bundle range on this broker
• metric: metric="bundle".

Name	Type	Description
pulsar_bundle_msg_rate_in	Gauge	The total message rate coming into the topics in this bundle (message per second).
pulsar_bundle_msg_rate_out	Gauge	The total message rate going out from the topics in this bundle (message per second).
pulsar_bundle_topics_count	Gauge	The topic count in this bundle.
pulsar_bundle_consumer_count	Gauge	The consumer count of the topics in this bundle.
pulsar_bundle_producer_count	Gauge	The producer count of the topics in this bundle.
pulsar_bundle_msg_throughput_in	Gauge	The total throughput coming into the topics in this bundle (byte per second).
pulsar_bundle_msg_throughput_out	Gauge	The total throughput going out from the topics in this bundle (byte per second).

Bundle assign metrics

All the bundle assign metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name you have configured in the broker.conf file.
• broker: broker=${broker}. ${broker} is the IP address of the broker.
• bundle: bundle=${bundle}. ${bundle} is the bundle range on this broker.
• metric: metric="assign".

Name	Type	Description
pulsar_lb_assign_broker_breakdown_total{result, reason}*	Counter	Assign broker breakdown count grouped by result and reason labels.

Service unit state channel metrics

All the service unit state channel metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name you have configured in the broker.conf file.
• metric: metric="sunitStateChn".

Name	Type	Description
pulsar_sunit_state_chn_owner_lookup_total{result, state}*	Counter	The owner broker lookup counts grouped by the result and state labels.
pulsar_sunit_state_chn_event_publish_ops_total{result, event}*	Counter	The published message count of service unit (e.g., bundle) state changes grouped by the result and event labels
pulsar_sunit_state_chn_subscribe_ops_total{result, event}*	Counter	The subscribed message count of service unit (e.g., bundle) state changes grouped by the result and event labels.
pulsar_sunit_state_chn_inactive_broker_cleanup_ops_total{result}*	Counter	The counts of inactive broker cleanup operations grouped by the result label.
pulsar_sunit_state_chn_orphan_su_cleanup_ops_total*	Counter	The total count of orphan service unit (e.g., bundle) cleanup operations.
pulsar_sunit_state_chn_owned_su_total*	Gauge	The number of owned bundles.
pulsar_sunit_state_chn_su_tombstone_cleanup_ops_total*	Counter	The total count of deleted service units (e.g., bundles) tombstone operations.
pulsar_sunit_state_chn_cleanup_ops_total{result=Failure}*	Counter	The total count of cleanup operation failures.

Pulsar Functions

All the Pulsar Functions metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.

Name	Type	Description
pulsar_function_processed_successfully_total	Counter	The total number of messages processed successfully.
pulsar_function_processed_successfully_1min_total	Counter	The total number of messages processed successfully in the last 1 minute.
pulsar_function_system_exceptions_total	Counter	The total number of system exceptions.
pulsar_function_system_exceptions_1min_total	Counter	The total number of system exceptions in the last 1 minute.
pulsar_function_user_exceptions_total	Counter	The total number of user exceptions.
pulsar_function_user_exceptions_1min_total	Counter	The total number of user exceptions in the last 1 minute.
pulsar_function_process_latency_ms	Summary	The process latency in milliseconds.
pulsar_function_process_latency_ms_1min	Summary	The process latency in milliseconds in the last 1 minute.
pulsar_function_last_invocation	Gauge	The timestamp of the last invocation of the function.
pulsar_function_received_total	Counter	The total number of messages received from source.
pulsar_function_received_1min_total	Counter	The total number of messages received from source in the last 1 minute.
pulsarfunction_user_metric	Summary	The user-defined metrics.

Connectors

All the Pulsar connector metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.

Connector metrics contain source metrics and sink metrics.

• Source metrics

  Name	Type	Description
  pulsar_source_written_total	Counter	The total number of records written to a Pulsar topic.
  pulsar_source_written_1min_total	Counter	The total number of records written to a Pulsar topic in the last 1 minute.
  pulsar_source_received_total	Counter	The total number of records received from source.
  pulsar_source_received_1min_total	Counter	The total number of records received from source in the last 1 minute.
  pulsar_source_last_invocation	Gauge	The timestamp of the last invocation of the source.
  pulsar_source_source_exception	Gauge	The exception from a source.
  pulsar_source_source_exceptions_total	Counter	The total number of source exceptions.
  pulsar_source_source_exceptions_1min_total	Counter	The total number of source exceptions in the last 1 minute.
  pulsar_source_system_exception	Gauge	The exception from system code.
  pulsar_source_system_exceptions_total	Counter	The total number of system exceptions.
  pulsar_source_system_exceptions_1min_total	Counter	The total number of system exceptions in the last 1 minute.
  pulsarsource_user_metric	Summary	The user-defined metrics.

• Sink metrics

  Name	Type	Description
  pulsar_sink_written_total	Counter	The total number of records processed by a sink.
  pulsar_sink_written_1min_total	Counter	The total number of records processed by a sink in the last 1 minute.
  pulsar_sink_received_1min_total	Counter	The total number of messages that a sink has received from Pulsar topics in the last 1 minute.
  pulsar_sink_received_total	Counter	The total number of records that a sink has received from Pulsar topics.
  pulsar_sink_last_invocation	Gauge	The timestamp of the last invocation of the sink.
  pulsar_sink_sink_exception	Gauge	The exception from a sink.
  pulsar_sink_sink_exceptions_total	Counter	The total number of sink exceptions.
  pulsar_sink_sink_exceptions_1min_total	Counter	The total number of sink exceptions in the last 1 minute.
  pulsar_sink_system_exception	Gauge	The exception from system code.
  pulsar_sink_system_exceptions_total	Counter	The total number of system exceptions.
  pulsar_sink_system_exceptions_1min_total	Counter	The total number of system exceptions in the last 1 minute.
  pulsarsink_user_metric	Summary	The user-defined metrics.

Proxy

All the proxy metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• kubernetes_pod_name: kubernetes_pod_name=${kubernetes_pod_name}. ${kubernetes_pod_name} is the Kubernetes pod name.

Name	Type	Description
pulsar_proxy_active_connections	Gauge	Number of connections currently active in the proxy.
pulsar_proxy_new_connections	Counter	Counter of connections being opened in the proxy.
pulsar_proxy_rejected_connections	Counter	Counter for connections rejected due to throttling.
pulsar_proxy_binary_ops	Counter	Counter of proxy operations.
pulsar_proxy_binary_bytes	Counter	Counter of proxy bytes.

Pulsar SQL Worker

Name	Type	Description
split_bytes_read	Counter	Number of bytes read from BookKeeper.
split_num_messages_deserialized	Counter	Number of messages deserialized.
split_num_record_deserialized	Counter	Number of records deserialized.
split_bytes_read_per_query	Summary	Total number of bytes read per query.
split_entry_deserialize_time	Summary	Time spent on deserializing entries.
split_entry_deserialize_time_per_query	Summary	Time spent on deserializing entries per query.
split_entry_queue_dequeue_wait_time	Summary	Time spend on waiting to get entry from entry queue because it is empty.
split_entry_queue_dequeue_wait_time_per_query	Summary	Total time spent waiting to get entry from entry queue per query.
split_message_queue_dequeue_wait_time_per_query	Summary	Time spent waiting to dequeue from message queue because is is empty per query.
split_message_queue_enqueue_wait_time	Summary	Time spent waiting for message queue enqueue because the message queue is full.
split_message_queue_enqueue_wait_time_per_query	Summary	Time spent waiting for message queue enqueue because the message queue is full per query.
split_num_entries_per_batch	Summary	Number of entries per batch.
split_num_entries_per_query	Summary	Number of entries per query.
split_num_messages_deserialized_per_entry	Summary	Number of messages deserialized per entry.
split_num_messages_deserialized_per_query	Summary	Number of messages deserialized per query.
split_read_attempts	Summary	Number of reading attempts (fail if queues are full).
split_read_attempts_per_query	Summary	Number of reading attempts per query.
split_read_latency_per_batch	Summary	Latency of reads per batch.
split_read_latency_per_query	Summary	Total read latency per query.
split_record_deserialize_time	Summary	Time spent deserializing message to record. For example, Avro, JSON, and so on.
split_record_deserialize_time_per_query	Summary	Time spent deserializing message to record per query.
split_total_execution_time	Summary	The total execution time.

Pulsar transaction

All the transaction metrics are labeled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• coordinator_id: coordinator_id=${coordinator_id}. ${coordinator_id} is the coordinator id.

Name	Type	Description
pulsar_txn_active_count	Gauge	Number of active transactions.
pulsar_txn_created_total	Counter	Number of created transactions.
pulsar_txn_committed_total	Counter	Number of committed transactions.
pulsar_txn_aborted_total	Counter	Number of aborted transactions of this coordinator.
pulsar_txn_timeout_total	Counter	Number of timeout transactions.
pulsar_txn_append_log_total	Counter	Number of append transaction logs.
pulsartxn_execution_latency_le*	Histogram	Transaction execution latency. Available latencies are as below: latency="10" is TransactionExecutionLatency between (0ms, 10ms] latency="20" is TransactionExecutionLatency between (10ms, 20ms] latency="50" is TransactionExecutionLatency between (20ms, 50ms] latency="100" is TransactionExecutionLatency between (50ms, 100ms] latency="500" is TransactionExecutionLatency between (100ms, 500ms] latency="1000" is TransactionExecutionLatency between (500ms, 1000ms] latency="5000" is TransactionExecutionLatency between (1s, 5s] latency="15000" is TransactionExecutionLatency between (5s, 15s] latency="30000" is TransactionExecutionLatency between (15s, 30s] latency="60000" is TransactionExecutionLatency between (30s, 60s] latency="300000" is TransactionExecutionLatency between (1m,5m] latency="1500000" is TransactionExecutionLatency between (5m,15m] latency="3000000" is TransactionExecutionLatency between (15m,30m] latency="overflow" is TransactionExecutionLatency between (30m,∞]
pulsar_txn_tb_client_abort_failed_total	Counter	The number of failures to abort transactions for transaction buffer client.
pulsar_txn_tb_client_commit_failed_total	Counter	The number of failures to commit transaction for transaction buffer client.
pulsar_txn_tb_client_abort_latency	Summary	The latency of aborting transactions for transaction buffer client.
pulsar_txn_tb_client_commit_latency	Summary	The latency of committing transactions for transaction buffer client.
pulsar_txn_tb_client_pending_requests	Counter	The number of pending requests for transaction buffer client.
pulsar_txn_tp_committed_count_total	Counter	The number of committed transactions for pending ack store.
pulsar_txn_tp_aborted_count_total	Counter	The number of aborted transactions for pending ack store.
pulsar_txn_tp_commit_latency	Summary	The latency of committing transactions for transaction pending ack handle.