Available Metrics

This topic lists all metrics available in Ignite 3.

client.handler

The metrics provided by the client handler and related to active clients.

Metric name	Description
BytesReceived	The total number of bytes received.
BytesSent	The total number of bytes sent.
ConnectionsInitiated	The total number of initiated connections.
CursorsActive	The number of active cursors.
RequestsActive	The number of requests in progress.
RequestsProcessed	The total number of processed requests.
RequestsFailed	The total number of failed requests.
SessionsAccepted	The total number of accepted sessions.
SessionsActive	The number of currently active sessions.
SessionsRejected	The total number of sessions rejected due to handshake errors.
SessionsRejectedTls	The total number of sessions rejected due to TLS handshake errors.
SessionsRejectedTimeout	The total number of sessions rejected due to a timeout.
TransactionsActive	The number of active transactions.

clock.service

Metric name	Description
ClockSkewExceedingMaxClockSkew	The observed clock skew that exceeded the maximum clock skew.

jvm

The metrics for Ignite Java Virtual Machine resource use.

Metric name	Description
UpTime	The uptime of the Java virtual machine in milliseconds.
gc.CollectionTime	The approximate total time spent on garbage collection in milliseconds, summed across all collectors.
memory.heap.Committed	The committed amount of heap memory.
memory.heap.Init	The initial amount of heap memory.
memory.heap.Max	The maximum amount of heap memory.
memory.heap.Used	The currently used amount of heap memory.
memory.non-heap.Committed	The committed amount of non-heap memory.
memory.non-heap.Init	The initial amount of non-heap memory.
memory.non-heap.Max	The maximum amount of non-heap memory.
memory.non-heap.Used	The used amount of non-heap memory.

metastorage

Metric name	Description
IdempotentCacheSize	The current size of the cache of idempotent commands' results.
SafeTimeLag	The number of milliseconds the local MetaStorage SafeTime lags behind the local logical clock.

os

Metric name	Description
CpuLoad	The CPU load. The value is between 0.0 and 1.0, where 0.0 means no CPU load and 1.0 means 100% CPU load. If the CPU load information is not available, a negative value is returned.
LoadAverage	The system load average for the last minute. The system load average is the sum of the number of runnable entities queued to the available processors and the number of runnable entities running on the available processors, averaged over a period of time. The way in which the load average is calculated depends on the operating system. If the load average is not available, a negative value is returned.

placement-driver

Metric name	Description
ActiveLeasesCount	The number of currently active leases.
CurrentPendingAssignmentsSize	The current size of pending assignments over all partitions.
CurrentStableAssignmentsSize	The current size of stable assignments over all partitions.
LeasesCreated	The total number of created leases.
LeasesProlonged	The total number of prolonged leases.
LeasesPublished	The total number of published leases.
LeasesWithoutCandidates	The total number of leases without candidates currently existing.

raft

Metric name	Description
raft.fsmcaller.disruptor.Stripes	The histogram of distribution data by stripes in the state machine for partitions.
raft.fsmcaller.disruptor.Batch	The histogram of the batch size to handle in the state machine for partitions.
raft.logmanager.disruptor.Batch	The histogram of the batch size to handle in the log for partitions.
raft.logmanager.disruptor.Stripes	The histogram of distribution data by stripes in the log for partitions.
raft.nodeimpl.disruptor.Batch	The histogram of the batch size to handle node operations for partitions.
raft.nodeimpl.disruptor.Stripes	The histogram of distribution data by stripes for node operations for partitions.
raft.readonlyservice.disruptor.Stripes	The histogram of distribution data by stripes for read-only operations for partitions.
raft.readonlyservice.disruptor.Batch	The histogram of the batch size to handle read-only operations for partitions.

resource.vacuum

Metric name	Description
MarkedForVacuumTransactionMetaCount	The count of transaction metas that have been marked for vacuum.
SkippedForFurtherProcessingUnfinishedTransactionCount	The current number of unfinished transactions that are skipped by the vacuumizer for further processing.
VacuumizedPersistentTransactionMetaCount	The count of persistent transaction metas that have been vacuumized.
VacuumizedVolatileTxnMetaCount	The count of volatile transaction metas that have been vacuumized.

storage.aipersist.{profile}

note

Each storage profile with aipersist storage engine has an individual metrics exporter.

Metric name	Description
CpTotalPages	The number of pages in the current checkpoint.
CpEvictedPages	The number of evicted pages in the current checkpoint.
CpWrittenPages	The number of written pages in the current checkpoint.
CpSyncedPages	The number of fsynced pages in the current checkpoint.
CpWriteSpeed	The checkpoint write speed, in pages per second. The value is averaged over the last 3 checkpoints plus the current one.
CurrDirtyRatio	The current ratio of dirty pages (dirty vs total), expressed as a fraction. The fraction is computed for each segment in the current region, and the highest value becomes "current."
LastEstimatedSpeedForMarkAll	The last estimated speed of marking all clean pages dirty to the end of a checkpoint, in pages per second.
MaxSize	The maximum in-memory region size in bytes.
MarkDirtySpeed	The speed of marking pages dirty, in pages per second. The value is averaged over the last 3 fragments, 0.25 sec each, plus the current fragment, 0–0.25 sec (0.75–1.0 sec total).
SpeedBasedThrottlingPercentage	The fraction of throttling time within average marking time (e.g., "quarter" = 0.25).
TargetDirtyRatio	The ratio of dirty pages (dirty vs total), expressed as a fraction. Throttling starts when this ratio is reached.
ThrottleParkTime	The park (sleep) time for the write operation, in nanoseconds. The value is averaged over the last 3 fragments, 0.25 sec each, plus the current fragment, 0–0.25 sec (0.75–1.0 sec total). It defines park periods for either the checkpoint buffer protection or the clean page pool protection.
TotalAllocatedSize	The total size of allocated pages on disk in bytes.
TotalUsedSize	The total size of non-empty allocated pages on disk in bytes.

sql.client

SQL client metrics.

Metric name	Description
OpenCursors	The number of currently open cursors.

sql.memory

Metric name	Description
Limit	The SQL memory limit (bytes).
MaxReserved	The maximum memory usage by SQL so far (bytes).
Reserved	The current memory usage by SQL (bytes).
StatementLimit	The memory limit per SQL statement (bytes).

sql.plan.cache

Metrics for SQL cache planning.

Metric name	Description
Hits	The total number of cache plan hits.
Misses	The total number of cache plan misses.

sql.queries

Metric name	Description
Canceled	The total number of canceled queries.
Failed	The total number of failed queries. This metric includes all unsuccessful queries, regardless of reason.
Succeeded	The total number of successful queries.
TimedOut	The total number of queries that failed due to a time-out.

tables.{table_name}

Table metrics.

Metric name	Description
RwReads	The total number of reads performed within read-write transactions.
RoReads	The total number of reads performed within read-only transactions.
Writes	The total number of write operations for this table.

thread.pools.{thread-pool-executor-name}

Metric name	Description
ActiveCount	The approximate number of threads that are actively executing tasks.
CompletedTaskCount	The approximate total number of tasks that have completed execution.
CorePoolSize	The core number of threads.
KeepAliveTime	The thread keep-alive time, which is the amount of time threads in excess of the core pool size may remain idle before being terminated.
LargestPoolSize	The largest number of threads that have ever simultaneously been in the pool.
MaximumPoolSize	The maximum allowed number of threads.
PoolSize	The current number of threads in the pool.
TaskCount	The approximate total number of tasks that have been scheduled for execution.
QueueSize	The current size of the execution queue.

topology.cluster

Metrics for the cluster topology.

Metric name	Description
ClusterId	The unique identifier of the cluster.
ClusterName	The unique name of the cluster.
TotalNodes	The total number of nodes in the logical topology.

topology.local

Metrics with node information.

Metric name	Description
NodeName	The unique name of the node.
NodeId	The unique identifier of the node.
NodeVersion	The Ignite version on the node.

transactions

Transaction metrics.

Metric name	Description
RwCommits	The total number of read-write transaction commits.
RoCommits	The total number of read-only transaction commits.
RwRollbacks	The total number of read-write transaction rollbacks.
RoRollbacks	The total number of read-only transaction rollbacks.
RwDuration	The histogram representation of read-write transaction latency.
RoDuration	The histogram representation of read-only transaction latency.
TotalRollbacks	The total number of transaction rollbacks.
TotalCommits	The total number of transaction commits.

zones

Metric name	Description
LocalUnrebalancedPartitionsCount	The number of partitions that should be moved to this node.
TotalUnrebalancedPartitionsCount	The total number of partitions that should be moved to a new owner.