org.apache.cassandra.metrics

Class TableMetrics

java.lang.Object

org.apache.cassandra.metrics.TableMetrics

public class TableMetrics
extends java.lang.Object

Metrics for ColumnFamilyStore.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	TableMetrics.ReleasableMetric
static class	TableMetrics.TableHistogram
static class	TableMetrics.TableMeter
static class	TableMetrics.TableTimer

Field Summary

Fields

Modifier and Type	Field and Description
com.codahale.metrics.Gauge<java.lang.Long>	additionalWriteLatencyNanos
com.codahale.metrics.Counter	additionalWrites
com.codahale.metrics.Gauge<java.lang.Long>	allMemtablesLiveDataSize Total amount of live data stored in the memtables (2i and pending flush memtables included) that resides off-heap, excluding any data structure overhead
com.codahale.metrics.Gauge<java.lang.Long>	allMemtablesOffHeapDataSize Total amount of data stored in the memtables (2i and pending flush memtables included) that resides off-heap.
com.codahale.metrics.Gauge<java.lang.Long>	allMemtablesOnHeapDataSize Total amount of data stored in the memtables (2i and pending flush memtables included) that resides on-heap.
TableMetrics.TableTimer	anticompactionTime time spent anticompacting data before participating in a consistent repair
com.codahale.metrics.Gauge<java.lang.Long>	bloomFilterDiskSpaceUsed Disk space used by bloom filter
com.codahale.metrics.Gauge<java.lang.Long>	bloomFilterFalsePositives Number of false positives in bloom filter
com.codahale.metrics.Gauge<java.lang.Double>	bloomFilterFalseRatio False positive ratio of bloom filter
com.codahale.metrics.Gauge<java.lang.Long>	bloomFilterOffHeapMemoryUsed Off heap memory used by bloom filter
com.codahale.metrics.Counter	bytesAnticompacted number of bytes read while doing anticompaction
com.codahale.metrics.Counter	bytesFlushed Total number of bytes flushed since server [re]start
com.codahale.metrics.Counter	bytesMutatedAnticompaction number of bytes where the whole sstable was contained in a repairing range so that we only mutated the repair status
com.codahale.metrics.Gauge<java.lang.Long>	bytesPendingRepair
com.codahale.metrics.Gauge<java.lang.Long>	bytesRepaired Reports the size of sstables in repaired, unrepaired, and any ongoing repair buckets
com.codahale.metrics.Gauge<java.lang.Long>	bytesUnrepaired
TableMetrics.TableHistogram	bytesValidated approximate number of bytes read while creating merkle trees
LatencyMetrics	casCommit CAS Commit metrics
LatencyMetrics	casPrepare CAS Prepare metrics
LatencyMetrics	casPropose CAS Propose metrics
TableMetrics.TableHistogram	colUpdateTimeDeltaHistogram Column update time delta on this CF
com.codahale.metrics.Counter	compactionBytesWritten Total number of bytes written by compaction since server [re]start
com.codahale.metrics.Gauge<java.lang.Long>	compressionMetadataOffHeapMemoryUsed Off heap memory used by compression meta data
com.codahale.metrics.Gauge<java.lang.Double>	compressionRatio Current compression ratio for all SSTables
TableMetrics.TableMeter	confirmedRepairedInconsistencies Metrics for inconsistencies detected between repaired data sets across replicas.
com.codahale.metrics.Timer	coordinatorReadLatency
com.codahale.metrics.Timer	coordinatorScanLatency
com.codahale.metrics.Timer	coordinatorWriteLatency
com.codahale.metrics.Counter	droppedMutations Deprecated.
static long[]	EMPTY
com.codahale.metrics.Gauge<long[]>	estimatedColumnCountHistogram Histogram of estimated number of columns.
com.codahale.metrics.Gauge<java.lang.Long>	estimatedPartitionCount Approximate number of keys in table.
com.codahale.metrics.Gauge<long[]>	estimatedPartitionSizeHistogram Histogram of estimated partition size (in bytes).
static LatencyMetrics	GLOBAL_RANGE_LATENCY
static LatencyMetrics	GLOBAL_READ_LATENCY
static LatencyMetrics	GLOBAL_WRITE_LATENCY
static com.codahale.metrics.Gauge<java.lang.Long>	globalBytesPendingRepair
static com.codahale.metrics.Gauge<java.lang.Long>	globalBytesRepaired
static com.codahale.metrics.Gauge<java.lang.Long>	globalBytesUnrepaired
static com.codahale.metrics.Gauge<java.lang.Double>	globalPercentRepaired
com.codahale.metrics.Gauge<java.lang.Long>	indexSummaryOffHeapMemoryUsed Off heap memory used by index summary
com.codahale.metrics.Gauge<java.lang.Double>	keyCacheHitRate Key cache hit rate for this CF
com.codahale.metrics.Counter	liveDiskSpaceUsed Disk space used by SSTables belonging to this table
TableMetrics.TableHistogram	liveScannedHistogram Live rows scanned in queries on this CF
com.codahale.metrics.Gauge<java.lang.Integer>	liveSSTableCount Number of SSTables on disk for this CF
com.codahale.metrics.Gauge<java.lang.Long>	maxPartitionSize Size of the largest compacted partition
com.codahale.metrics.Gauge<java.lang.Long>	meanPartitionSize Size of the smallest compacted partition
com.codahale.metrics.Gauge<java.lang.Long>	memtableColumnsCount Total number of columns present in the memtable.
com.codahale.metrics.Gauge<java.lang.Long>	memtableLiveDataSize Total amount of live data stored in the memtable, excluding any data structure overhead
com.codahale.metrics.Gauge<java.lang.Long>	memtableOffHeapDataSize Total amount of data stored in the memtable that resides off-heap, including column related overhead and partitions overwritten.
com.codahale.metrics.Gauge<java.lang.Long>	memtableOnHeapDataSize Total amount of data stored in the memtable that resides on-heap, including column related overhead and partitions overwritten.
com.codahale.metrics.Counter	memtableSwitchCount Number of times flush has resulted in the memtable being switched out.
com.codahale.metrics.Gauge<java.lang.Long>	minPartitionSize Size of the smallest compacted partition
com.codahale.metrics.Gauge<java.lang.Double>	mutatedAnticompactionGauge ratio of how much we anticompact vs how much we could mutate the repair status
com.codahale.metrics.Gauge<java.lang.Integer>	oldVersionSSTableCount Number of SSTables with old version on disk for this CF
TableMetrics.TableHistogram	partitionsValidated number of partitions read creating merkle trees
com.codahale.metrics.Gauge<java.lang.Integer>	pendingCompactions Estimate of number of pending compactios for this table
com.codahale.metrics.Counter	pendingFlushes Estimated number of tasks pending for this table
com.codahale.metrics.Gauge<java.lang.Double>	percentRepaired percent of the data that is repaired
LatencyMetrics	rangeLatency (Local) range slice metrics
LatencyMetrics	readLatency (Local) read metrics
com.codahale.metrics.Meter	readRepairRequests
com.codahale.metrics.Gauge<java.lang.Long>	recentBloomFilterFalsePositives Number of false positives in bloom filter from last read
com.codahale.metrics.Gauge<java.lang.Double>	recentBloomFilterFalseRatio False positive ratio of bloom filter from last read
TableMetrics.TableHistogram	repairedDataTrackingOverreadRows
TableMetrics.TableTimer	repairedDataTrackingOverreadTime
com.codahale.metrics.Counter	repairsCompleted Number of completed repairs as coordinator on this table
com.codahale.metrics.Counter	repairsStarted Number of started repairs as coordinator on this table
TableMetrics.TableTimer	repairSyncTime time spent syncing data in a repair
com.codahale.metrics.Meter	replicaFilteringProtectionRequests
com.codahale.metrics.Histogram	rfpRowsCachedPerQuery This histogram records the maximum number of rows ReplicaFilteringProtection caches at a point in time per query.
com.codahale.metrics.Counter	rowCacheHit Number of row cache hits
com.codahale.metrics.Counter	rowCacheHitOutOfRange Row cache hits, but result out of range
com.codahale.metrics.Counter	rowCacheMiss Number of row cache misses
java.util.EnumMap<Sampler.SamplerType,Sampler<?>>	samplers
com.codahale.metrics.Meter	shortReadProtectionRequests
com.codahale.metrics.Counter	speculativeFailedRetries
com.codahale.metrics.Counter	speculativeInsufficientReplicas
com.codahale.metrics.Counter	speculativeRetries
com.codahale.metrics.Gauge<java.lang.Long>	speculativeSampleLatencyNanos
TableMetrics.TableHistogram	sstablesPerReadHistogram Histogram of the number of sstable data files accessed per read
com.codahale.metrics.Counter	tombstoneFailures Number of tombstone read failures
TableMetrics.TableHistogram	tombstoneScannedHistogram Tombstones scanned in queries on this CF
com.codahale.metrics.Counter	tombstoneWarnings Number of tombstone read warnings
Sampler<java.nio.ByteBuffer>	topCasPartitionContention When sampler activated, will track the most frequent partitions with cas contention
Sampler<java.lang.String>	topLocalReadQueryTime When sampler activated, will track the slowest local reads
Sampler<java.nio.ByteBuffer>	topReadPartitionFrequency When sampler activated, will track the most frequently read partitions
Sampler<java.nio.ByteBuffer>	topWritePartitionFrequency When sampler activated, will track the most frequently written to partitions
Sampler<java.nio.ByteBuffer>	topWritePartitionSize When sampler activated, will track the largest mutations
com.codahale.metrics.Counter	totalDiskSpaceUsed Total disk space used by SSTables belonging to this table, including obsolete ones waiting to be GC'd
com.codahale.metrics.Gauge<java.lang.Long>	trueSnapshotsSize Disk space used by snapshot files which
TableMetrics.TableMeter	unconfirmedRepairedInconsistencies
com.codahale.metrics.Gauge<java.lang.Integer>	unleveledSSTables
TableMetrics.TableTimer	validationTime time spent creating merkle trees
TableMetrics.TableTimer	viewLockAcquireTime time taken acquiring the partition lock for materialized view updates for this table
TableMetrics.TableTimer	viewReadTime time taken during the local read of a materialized view update
com.codahale.metrics.Histogram	waitingOnFreeMemtableSpace Time spent waiting for free memtable space, either on- or off-heap
LatencyMetrics	writeLatency (Local) write metrics

Constructor Summary

Constructors

Constructor and Description
TableMetrics(ColumnFamilyStore cfs) Creates metrics for given ColumnFamilyStore.

Method Summary

Modifier and Type	Method and Description
static long[]	addHistogram(long[] sums, long[] buckets)
protected com.codahale.metrics.Counter	createTableCounter(java.lang.String name) Creates a counter that will also have a global counter thats the sum of all counters across different column families
protected com.codahale.metrics.Counter	createTableCounter(java.lang.String name, java.lang.String alias)
protected <T extends java.lang.Number> com.codahale.metrics.Gauge<T>	createTableGauge(java.lang.String name, com.codahale.metrics.Gauge<T> gauge) Create a gauge that will be part of a merged version of all column families.
protected <G,T> com.codahale.metrics.Gauge<T>	createTableGauge(java.lang.String name, com.codahale.metrics.Gauge<T> gauge, com.codahale.metrics.Gauge<G> globalGauge) Create a gauge that will be part of a merged version of all column families.
protected <G,T> com.codahale.metrics.Gauge<T>	createTableGauge(java.lang.String name, java.lang.String alias, com.codahale.metrics.Gauge<T> gauge, com.codahale.metrics.Gauge<G> globalGauge)
protected <G,T> com.codahale.metrics.Gauge<T>	createTableGaugeWithDeprecation(java.lang.String name, java.lang.String deprecated, com.codahale.metrics.Gauge<T> gauge, com.codahale.metrics.Gauge<G> globalGauge) Same as createTableGauge(String, Gauge, Gauge) but accepts a deprecated name for a table Gauge.
protected com.codahale.metrics.Histogram	createTableHistogram(java.lang.String name, boolean considerZeroes)
protected TableMetrics.TableHistogram	createTableHistogram(java.lang.String name, com.codahale.metrics.Histogram keyspaceHistogram, boolean considerZeroes) Create a histogram-like interface that will register both a CF, keyspace and global level histogram and forward any updates to both
protected com.codahale.metrics.Histogram	createTableHistogram(java.lang.String name, java.lang.String alias, boolean considerZeroes)
protected TableMetrics.TableHistogram	createTableHistogram(java.lang.String name, java.lang.String alias, com.codahale.metrics.Histogram keyspaceHistogram, boolean considerZeroes)
protected TableMetrics.TableMeter	createTableMeter(java.lang.String name, com.codahale.metrics.Meter keyspaceMeter)
protected TableMetrics.TableMeter	createTableMeter(java.lang.String name, java.lang.String alias, com.codahale.metrics.Meter keyspaceMeter)
protected com.codahale.metrics.Timer	createTableTimer(java.lang.String name)
protected TableMetrics.TableTimer	createTableTimer(java.lang.String name, com.codahale.metrics.Timer keyspaceTimer)
void	release() Release all associated metrics.
void	updateSSTableIterated(int count)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY

public static final long[] EMPTY

GLOBAL_READ_LATENCY

public static final LatencyMetrics GLOBAL_READ_LATENCY

GLOBAL_WRITE_LATENCY

public static final LatencyMetrics GLOBAL_WRITE_LATENCY

GLOBAL_RANGE_LATENCY

public static final LatencyMetrics GLOBAL_RANGE_LATENCY

memtableOnHeapDataSize

public final com.codahale.metrics.Gauge<java.lang.Long> memtableOnHeapDataSize

Total amount of data stored in the memtable that resides on-heap, including column related overhead and partitions overwritten.

memtableOffHeapDataSize

public final com.codahale.metrics.Gauge<java.lang.Long> memtableOffHeapDataSize

Total amount of data stored in the memtable that resides off-heap, including column related overhead and partitions overwritten.

memtableLiveDataSize

public final com.codahale.metrics.Gauge<java.lang.Long> memtableLiveDataSize

Total amount of live data stored in the memtable, excluding any data structure overhead

allMemtablesOnHeapDataSize

public final com.codahale.metrics.Gauge<java.lang.Long> allMemtablesOnHeapDataSize

Total amount of data stored in the memtables (2i and pending flush memtables included) that resides on-heap.

allMemtablesOffHeapDataSize

public final com.codahale.metrics.Gauge<java.lang.Long> allMemtablesOffHeapDataSize

Total amount of data stored in the memtables (2i and pending flush memtables included) that resides off-heap.

allMemtablesLiveDataSize

public final com.codahale.metrics.Gauge<java.lang.Long> allMemtablesLiveDataSize

Total amount of live data stored in the memtables (2i and pending flush memtables included) that resides off-heap, excluding any data structure overhead

memtableColumnsCount

public final com.codahale.metrics.Gauge<java.lang.Long> memtableColumnsCount

Total number of columns present in the memtable.

memtableSwitchCount

public final com.codahale.metrics.Counter memtableSwitchCount

Number of times flush has resulted in the memtable being switched out.

compressionRatio

public final com.codahale.metrics.Gauge<java.lang.Double> compressionRatio

Current compression ratio for all SSTables

estimatedPartitionSizeHistogram

public final com.codahale.metrics.Gauge<long[]> estimatedPartitionSizeHistogram

Histogram of estimated partition size (in bytes).

estimatedPartitionCount

public final com.codahale.metrics.Gauge<java.lang.Long> estimatedPartitionCount

Approximate number of keys in table.

estimatedColumnCountHistogram

public final com.codahale.metrics.Gauge<long[]> estimatedColumnCountHistogram

Histogram of estimated number of columns.

sstablesPerReadHistogram

public final TableMetrics.TableHistogram sstablesPerReadHistogram

Histogram of the number of sstable data files accessed per read

readLatency

public final LatencyMetrics readLatency

(Local) read metrics

rangeLatency

public final LatencyMetrics rangeLatency

(Local) range slice metrics

writeLatency

public final LatencyMetrics writeLatency

(Local) write metrics

pendingFlushes

public final com.codahale.metrics.Counter pendingFlushes

Estimated number of tasks pending for this table

bytesFlushed

public final com.codahale.metrics.Counter bytesFlushed

Total number of bytes flushed since server [re]start

compactionBytesWritten

public final com.codahale.metrics.Counter compactionBytesWritten

Total number of bytes written by compaction since server [re]start

pendingCompactions

public final com.codahale.metrics.Gauge<java.lang.Integer> pendingCompactions

Estimate of number of pending compactios for this table

liveSSTableCount

public final com.codahale.metrics.Gauge<java.lang.Integer> liveSSTableCount

Number of SSTables on disk for this CF

oldVersionSSTableCount

public final com.codahale.metrics.Gauge<java.lang.Integer> oldVersionSSTableCount

Number of SSTables with old version on disk for this CF

liveDiskSpaceUsed

public final com.codahale.metrics.Counter liveDiskSpaceUsed

Disk space used by SSTables belonging to this table

totalDiskSpaceUsed

public final com.codahale.metrics.Counter totalDiskSpaceUsed

Total disk space used by SSTables belonging to this table, including obsolete ones waiting to be GC'd

minPartitionSize

public final com.codahale.metrics.Gauge<java.lang.Long> minPartitionSize

Size of the smallest compacted partition

maxPartitionSize

public final com.codahale.metrics.Gauge<java.lang.Long> maxPartitionSize

Size of the largest compacted partition

meanPartitionSize

public final com.codahale.metrics.Gauge<java.lang.Long> meanPartitionSize

Size of the smallest compacted partition

bloomFilterFalsePositives

public final com.codahale.metrics.Gauge<java.lang.Long> bloomFilterFalsePositives

Number of false positives in bloom filter

recentBloomFilterFalsePositives

public final com.codahale.metrics.Gauge<java.lang.Long> recentBloomFilterFalsePositives

Number of false positives in bloom filter from last read

bloomFilterFalseRatio

public final com.codahale.metrics.Gauge<java.lang.Double> bloomFilterFalseRatio

False positive ratio of bloom filter

recentBloomFilterFalseRatio

public final com.codahale.metrics.Gauge<java.lang.Double> recentBloomFilterFalseRatio

False positive ratio of bloom filter from last read

bloomFilterDiskSpaceUsed

public final com.codahale.metrics.Gauge<java.lang.Long> bloomFilterDiskSpaceUsed

Disk space used by bloom filter

bloomFilterOffHeapMemoryUsed

public final com.codahale.metrics.Gauge<java.lang.Long> bloomFilterOffHeapMemoryUsed

Off heap memory used by bloom filter

indexSummaryOffHeapMemoryUsed

public final com.codahale.metrics.Gauge<java.lang.Long> indexSummaryOffHeapMemoryUsed

Off heap memory used by index summary

compressionMetadataOffHeapMemoryUsed

public final com.codahale.metrics.Gauge<java.lang.Long> compressionMetadataOffHeapMemoryUsed

Off heap memory used by compression meta data

keyCacheHitRate

public final com.codahale.metrics.Gauge<java.lang.Double> keyCacheHitRate

Key cache hit rate for this CF

tombstoneScannedHistogram

public final TableMetrics.TableHistogram tombstoneScannedHistogram

Tombstones scanned in queries on this CF

liveScannedHistogram

public final TableMetrics.TableHistogram liveScannedHistogram

Live rows scanned in queries on this CF

colUpdateTimeDeltaHistogram

public final TableMetrics.TableHistogram colUpdateTimeDeltaHistogram

Column update time delta on this CF

viewLockAcquireTime

public final TableMetrics.TableTimer viewLockAcquireTime

time taken acquiring the partition lock for materialized view updates for this table

viewReadTime

public final TableMetrics.TableTimer viewReadTime

time taken during the local read of a materialized view update

trueSnapshotsSize

public final com.codahale.metrics.Gauge<java.lang.Long> trueSnapshotsSize

Disk space used by snapshot files which

rowCacheHitOutOfRange

public final com.codahale.metrics.Counter rowCacheHitOutOfRange

Row cache hits, but result out of range

rowCacheHit

public final com.codahale.metrics.Counter rowCacheHit

Number of row cache hits

rowCacheMiss

public final com.codahale.metrics.Counter rowCacheMiss

Number of row cache misses

tombstoneFailures

public final com.codahale.metrics.Counter tombstoneFailures

Number of tombstone read failures

tombstoneWarnings

public final com.codahale.metrics.Counter tombstoneWarnings

Number of tombstone read warnings

casPrepare

public final LatencyMetrics casPrepare

CAS Prepare metrics

casPropose

public final LatencyMetrics casPropose

CAS Propose metrics

casCommit

public final LatencyMetrics casCommit

CAS Commit metrics

percentRepaired

public final com.codahale.metrics.Gauge<java.lang.Double> percentRepaired

percent of the data that is repaired

bytesRepaired

public final com.codahale.metrics.Gauge<java.lang.Long> bytesRepaired

Reports the size of sstables in repaired, unrepaired, and any ongoing repair buckets

bytesUnrepaired

public final com.codahale.metrics.Gauge<java.lang.Long> bytesUnrepaired

bytesPendingRepair

public final com.codahale.metrics.Gauge<java.lang.Long> bytesPendingRepair

repairsStarted

public final com.codahale.metrics.Counter repairsStarted

Number of started repairs as coordinator on this table

repairsCompleted

public final com.codahale.metrics.Counter repairsCompleted

Number of completed repairs as coordinator on this table

anticompactionTime

public final TableMetrics.TableTimer anticompactionTime

time spent anticompacting data before participating in a consistent repair

validationTime

public final TableMetrics.TableTimer validationTime

time spent creating merkle trees

repairSyncTime

public final TableMetrics.TableTimer repairSyncTime

time spent syncing data in a repair

bytesValidated

public final TableMetrics.TableHistogram bytesValidated

approximate number of bytes read while creating merkle trees

partitionsValidated

public final TableMetrics.TableHistogram partitionsValidated

number of partitions read creating merkle trees

bytesAnticompacted

public final com.codahale.metrics.Counter bytesAnticompacted

number of bytes read while doing anticompaction

bytesMutatedAnticompaction

public final com.codahale.metrics.Counter bytesMutatedAnticompaction

number of bytes where the whole sstable was contained in a repairing range so that we only mutated the repair status

mutatedAnticompactionGauge

public final com.codahale.metrics.Gauge<java.lang.Double> mutatedAnticompactionGauge

ratio of how much we anticompact vs how much we could mutate the repair status

coordinatorReadLatency

public final com.codahale.metrics.Timer coordinatorReadLatency

coordinatorScanLatency

public final com.codahale.metrics.Timer coordinatorScanLatency

coordinatorWriteLatency

public final com.codahale.metrics.Timer coordinatorWriteLatency

waitingOnFreeMemtableSpace

public final com.codahale.metrics.Histogram waitingOnFreeMemtableSpace

Time spent waiting for free memtable space, either on- or off-heap

droppedMutations

@Deprecated
public final com.codahale.metrics.Counter droppedMutations

Deprecated.

speculativeRetries

public final com.codahale.metrics.Counter speculativeRetries

speculativeFailedRetries

public final com.codahale.metrics.Counter speculativeFailedRetries

speculativeInsufficientReplicas

public final com.codahale.metrics.Counter speculativeInsufficientReplicas

speculativeSampleLatencyNanos

public final com.codahale.metrics.Gauge<java.lang.Long> speculativeSampleLatencyNanos

additionalWrites

public final com.codahale.metrics.Counter additionalWrites

additionalWriteLatencyNanos

public final com.codahale.metrics.Gauge<java.lang.Long> additionalWriteLatencyNanos

unleveledSSTables

public final com.codahale.metrics.Gauge<java.lang.Integer> unleveledSSTables

confirmedRepairedInconsistencies

public final TableMetrics.TableMeter confirmedRepairedInconsistencies

Metrics for inconsistencies detected between repaired data sets across replicas. These are tracked on the coordinator.

unconfirmedRepairedInconsistencies

public final TableMetrics.TableMeter unconfirmedRepairedInconsistencies

repairedDataTrackingOverreadRows

public final TableMetrics.TableHistogram repairedDataTrackingOverreadRows

repairedDataTrackingOverreadTime

public final TableMetrics.TableTimer repairedDataTrackingOverreadTime

topReadPartitionFrequency

public final Sampler<java.nio.ByteBuffer> topReadPartitionFrequency

When sampler activated, will track the most frequently read partitions

topWritePartitionFrequency

public final Sampler<java.nio.ByteBuffer> topWritePartitionFrequency

When sampler activated, will track the most frequently written to partitions

topWritePartitionSize

public final Sampler<java.nio.ByteBuffer> topWritePartitionSize

When sampler activated, will track the largest mutations

topCasPartitionContention

public final Sampler<java.nio.ByteBuffer> topCasPartitionContention

When sampler activated, will track the most frequent partitions with cas contention

topLocalReadQueryTime

public final Sampler<java.lang.String> topLocalReadQueryTime

When sampler activated, will track the slowest local reads

globalPercentRepaired

public static final com.codahale.metrics.Gauge<java.lang.Double> globalPercentRepaired

globalBytesRepaired

public static final com.codahale.metrics.Gauge<java.lang.Long> globalBytesRepaired

globalBytesUnrepaired

public static final com.codahale.metrics.Gauge<java.lang.Long> globalBytesUnrepaired

globalBytesPendingRepair

public static final com.codahale.metrics.Gauge<java.lang.Long> globalBytesPendingRepair

readRepairRequests

public final com.codahale.metrics.Meter readRepairRequests

shortReadProtectionRequests

public final com.codahale.metrics.Meter shortReadProtectionRequests

replicaFilteringProtectionRequests

public final com.codahale.metrics.Meter replicaFilteringProtectionRequests

rfpRowsCachedPerQuery

public final com.codahale.metrics.Histogram rfpRowsCachedPerQuery

This histogram records the maximum number of rows ReplicaFilteringProtection caches at a point in time per query. With no replica divergence, this is equivalent to the maximum number of cached rows in a single partition during a query. It can be helpful when choosing appropriate values for the replica_filtering_protection thresholds in cassandra.yaml.

samplers

public final java.util.EnumMap<Sampler.SamplerType,Sampler<?>> samplers

Constructor Detail

TableMetrics

public TableMetrics(ColumnFamilyStore cfs)

Creates metrics for given ColumnFamilyStore.

Parameters:

cfs - ColumnFamilyStore to measure metrics

Method Detail

addHistogram

public static long[] addHistogram(long[] sums,
                                  long[] buckets)

updateSSTableIterated

public void updateSSTableIterated(int count)

release

public void release()

Release all associated metrics.

createTableGauge

protected <T extends java.lang.Number> com.codahale.metrics.Gauge<T> createTableGauge(java.lang.String name,
                                                                                      com.codahale.metrics.Gauge<T> gauge)

Create a gauge that will be part of a merged version of all column families. The global gauge will merge each CF gauge by adding their values

createTableGauge

protected <G,T> com.codahale.metrics.Gauge<T> createTableGauge(java.lang.String name,
                                                               com.codahale.metrics.Gauge<T> gauge,
                                                               com.codahale.metrics.Gauge<G> globalGauge)

Create a gauge that will be part of a merged version of all column families. The global gauge is defined as the globalGauge parameter

createTableGauge

protected <G,T> com.codahale.metrics.Gauge<T> createTableGauge(java.lang.String name,
                                                               java.lang.String alias,
                                                               com.codahale.metrics.Gauge<T> gauge,
                                                               com.codahale.metrics.Gauge<G> globalGauge)

createTableGaugeWithDeprecation

protected <G,T> com.codahale.metrics.Gauge<T> createTableGaugeWithDeprecation(java.lang.String name,
                                                                              java.lang.String deprecated,
                                                                              com.codahale.metrics.Gauge<T> gauge,
                                                                              com.codahale.metrics.Gauge<G> globalGauge)

Same as createTableGauge(String, Gauge, Gauge) but accepts a deprecated name for a table Gauge. Prefer that method when deprecation is not necessary.

Parameters:

name - the name of the metric registered with the "Table" type

deprecated - the deprecated name for the metric registered with the "Table" type

createTableCounter

protected com.codahale.metrics.Counter createTableCounter(java.lang.String name)

Creates a counter that will also have a global counter thats the sum of all counters across different column families

createTableCounter

protected com.codahale.metrics.Counter createTableCounter(java.lang.String name,
                                                          java.lang.String alias)

createTableHistogram

protected TableMetrics.TableHistogram createTableHistogram(java.lang.String name,
                                                           com.codahale.metrics.Histogram keyspaceHistogram,
                                                           boolean considerZeroes)

Create a histogram-like interface that will register both a CF, keyspace and global level histogram and forward any updates to both

createTableHistogram

protected TableMetrics.TableHistogram createTableHistogram(java.lang.String name,
                                                           java.lang.String alias,
                                                           com.codahale.metrics.Histogram keyspaceHistogram,
                                                           boolean considerZeroes)

createTableHistogram

protected com.codahale.metrics.Histogram createTableHistogram(java.lang.String name,
                                                              boolean considerZeroes)

createTableHistogram

protected com.codahale.metrics.Histogram createTableHistogram(java.lang.String name,
                                                              java.lang.String alias,
                                                              boolean considerZeroes)

createTableTimer

protected TableMetrics.TableTimer createTableTimer(java.lang.String name,
                                                   com.codahale.metrics.Timer keyspaceTimer)

createTableTimer

protected com.codahale.metrics.Timer createTableTimer(java.lang.String name)

createTableMeter

protected TableMetrics.TableMeter createTableMeter(java.lang.String name,
                                                   com.codahale.metrics.Meter keyspaceMeter)

createTableMeter

protected TableMetrics.TableMeter createTableMeter(java.lang.String name,
                                                   java.lang.String alias,
                                                   com.codahale.metrics.Meter keyspaceMeter)