KeyspaceMetrics (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.metrics.KeyspaceMetrics

public class KeyspaceMetrics
extends java.lang.Object

Metrics for ColumnFamilyStore.

Field Summary

Fields
Modifier and Type	Field and Description
`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.
`com.codahale.metrics.Gauge<java.lang.Long>`	`bloomFilterDiskSpaceUsed` Disk space used by bloom filter
`com.codahale.metrics.Gauge<java.lang.Long>`	`bloomFilterOffHeapMemoryUsed` Off heap memory used by bloom filter
`LatencyMetrics`	`casCommit` CAS Commit metrics
`LatencyMetrics`	`casPrepare` CAS Prepare metric
`LatencyMetrics`	`casPropose` CAS Propose metrics
`com.codahale.metrics.Histogram`	`colUpdateTimeDeltaHistogram` Column update time delta on this Keyspace
`com.codahale.metrics.Gauge<java.lang.Long>`	`compressionMetadataOffHeapMemoryUsed` Off heap memory used by compression meta data
`MetricNameFactory`	`factory`
`com.codahale.metrics.Gauge<java.lang.Long>`	`indexSummaryOffHeapMemoryUsed` Off heap memory used by index summary
`com.codahale.metrics.Gauge<java.lang.Long>`	`liveDiskSpaceUsed` Disk space used by SSTables belonging to this CF
`com.codahale.metrics.Histogram`	`liveScannedHistogram` Live cells scanned in queries on this Keyspace
`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.Gauge<java.lang.Long>`	`memtableSwitchCount` Number of times flush has resulted in the memtable being switched out.
`com.codahale.metrics.Gauge<java.lang.Long>`	`pendingCompactions` Estimate of number of pending compactios for this CF
`com.codahale.metrics.Gauge<java.lang.Long>`	`pendingFlushes` Estimated number of tasks pending for this column family
`LatencyMetrics`	`rangeLatency` (Local) range slice metrics
`LatencyMetrics`	`readLatency` (Local) read metrics
`com.codahale.metrics.Histogram`	`sstablesPerReadHistogram` Histogram of the number of sstable data files accessed per read
`com.codahale.metrics.Histogram`	`tombstoneScannedHistogram` Tombstones scanned in queries on this Keyspace
`com.codahale.metrics.Gauge<java.lang.Long>`	`totalDiskSpaceUsed` Total disk space used by SSTables belonging to this CF, including obsolete ones waiting to be GC'd
`com.codahale.metrics.Timer`	`viewLockAcquireTime` time taken acquiring the partition lock for materialized view updates on this keyspace
`com.codahale.metrics.Timer`	`viewReadTime` time taken during the local read of a materialized view update
`LatencyMetrics`	`writeLatency` (Local) write metrics

Constructor Summary

Constructors
Constructor and Description

KeyspaceMetrics(Keyspace ks)
Creates metrics for given ColumnFamilyStore.

Constructors
Constructor and Description
`KeyspaceMetrics(Keyspace ks)` Creates metrics for given `ColumnFamilyStore`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method and Description

void release()
Release all associated metrics.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`release()` Release all associated metrics.

- Field Detail
  - 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
  - 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.
  - 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
  - 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.
  - 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.Gauge<java.lang.Long> memtableSwitchCount
```
    Number of times flush has resulted in the memtable being switched out.
  - pendingFlushes
```
public final com.codahale.metrics.Gauge<java.lang.Long> pendingFlushes
```
    Estimated number of tasks pending for this column family
  - pendingCompactions
```
public final com.codahale.metrics.Gauge<java.lang.Long> pendingCompactions
```
    Estimate of number of pending compactios for this CF
  - liveDiskSpaceUsed
```
public final com.codahale.metrics.Gauge<java.lang.Long> liveDiskSpaceUsed
```
    Disk space used by SSTables belonging to this CF
  - totalDiskSpaceUsed
```
public final com.codahale.metrics.Gauge<java.lang.Long> totalDiskSpaceUsed
```
    Total disk space used by SSTables belonging to this CF, including obsolete ones waiting to be GC'd
  - 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
  - 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
  - sstablesPerReadHistogram
```
public final com.codahale.metrics.Histogram sstablesPerReadHistogram
```
    Histogram of the number of sstable data files accessed per read
  - tombstoneScannedHistogram
```
public final com.codahale.metrics.Histogram tombstoneScannedHistogram
```
    Tombstones scanned in queries on this Keyspace
  - liveScannedHistogram
```
public final com.codahale.metrics.Histogram liveScannedHistogram
```
    Live cells scanned in queries on this Keyspace
  - colUpdateTimeDeltaHistogram
```
public final com.codahale.metrics.Histogram colUpdateTimeDeltaHistogram
```
    Column update time delta on this Keyspace
  - viewLockAcquireTime
```
public final com.codahale.metrics.Timer viewLockAcquireTime
```
    time taken acquiring the partition lock for materialized view updates on this keyspace
  - viewReadTime
```
public final com.codahale.metrics.Timer viewReadTime
```
    time taken during the local read of a materialized view update
  - casPrepare
```
public final LatencyMetrics casPrepare
```
    CAS Prepare metric
  - casPropose
```
public final LatencyMetrics casPropose
```
    CAS Propose metrics
  - casCommit
```
public final LatencyMetrics casCommit
```
    CAS Commit metrics
  - factory
```
public final MetricNameFactory factory
```
- Constructor Detail
  - KeyspaceMetrics
```
public KeyspaceMetrics(Keyspace ks)
```
    Creates metrics for given ColumnFamilyStore.
    
    Parameters:
    
    ks - Keyspace to measure metrics
- Method Detail
  - release
```
public void release()
```
    Release all associated metrics.

Class KeyspaceMetrics

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

memtableLiveDataSize

memtableOnHeapDataSize

memtableOffHeapDataSize

allMemtablesLiveDataSize

allMemtablesOnHeapDataSize

allMemtablesOffHeapDataSize

memtableColumnsCount

memtableSwitchCount

pendingFlushes

pendingCompactions

liveDiskSpaceUsed

totalDiskSpaceUsed

bloomFilterDiskSpaceUsed

bloomFilterOffHeapMemoryUsed

indexSummaryOffHeapMemoryUsed

compressionMetadataOffHeapMemoryUsed

readLatency

rangeLatency

writeLatency

sstablesPerReadHistogram

tombstoneScannedHistogram

liveScannedHistogram

colUpdateTimeDeltaHistogram

viewLockAcquireTime

viewReadTime

casPrepare

casPropose

casCommit

factory

Constructor Detail

KeyspaceMetrics

Method Detail

release