org.apache.cassandra.io.sstable.metadata

Class StatsMetadata

java.lang.Object

org.apache.cassandra.io.sstable.metadata.MetadataComponent

org.apache.cassandra.io.sstable.metadata.StatsMetadata

All Implemented Interfaces:

java.lang.Comparable<MetadataComponent>

public class StatsMetadata
extends MetadataComponent

SSTable metadata that always stay on heap.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StatsMetadata.StatsMetadataSerializer

Field Summary

Fields

Modifier and Type	Field and Description
double	compressionRatio
EstimatedHistogram	estimatedColumnCount
EstimatedHistogram	estimatedRowSize
StreamingHistogram	estimatedTombstoneDropTime
boolean	hasLegacyCounterShards
java.util.List<java.nio.ByteBuffer>	maxColumnNames
int	maxLocalDeletionTime
long	maxTimestamp
java.util.List<java.nio.ByteBuffer>	minColumnNames
long	minTimestamp
long	repairedAt
ReplayPosition	replayPosition
static IMetadataComponentSerializer	serializer
int	sstableLevel

Constructor Summary

Constructors

Constructor and Description

StatsMetadata(EstimatedHistogram estimatedRowSize, EstimatedHistogram estimatedColumnCount, ReplayPosition replayPosition, long minTimestamp, long maxTimestamp, int maxLocalDeletionTime, double compressionRatio, StreamingHistogram estimatedTombstoneDropTime, int sstableLevel, java.util.List<java.nio.ByteBuffer> minColumnNames, java.util.List<java.nio.ByteBuffer> maxColumnNames, boolean hasLegacyCounterShards, long repairedAt)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
double	getDroppableTombstonesBefore(int gcBefore)
double	getEstimatedDroppableTombstoneRatio(int gcBefore)
MetadataType	getType()
int	hashCode()
StatsMetadata	mutateLevel(int newLevel)
StatsMetadata	mutateRepairedAt(long newRepairedAt)

Methods inherited from class org.apache.cassandra.io.sstable.metadata.MetadataComponent

compareTo

Methods inherited from class java.lang.Object

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

Field Detail

serializer

public static final IMetadataComponentSerializer serializer

estimatedRowSize

public final EstimatedHistogram estimatedRowSize

estimatedColumnCount

public final EstimatedHistogram estimatedColumnCount

replayPosition

public final ReplayPosition replayPosition

minTimestamp

public final long minTimestamp

maxTimestamp

public final long maxTimestamp

maxLocalDeletionTime

public final int maxLocalDeletionTime

compressionRatio

public final double compressionRatio

estimatedTombstoneDropTime

public final StreamingHistogram estimatedTombstoneDropTime

sstableLevel

public final int sstableLevel

maxColumnNames

public final java.util.List<java.nio.ByteBuffer> maxColumnNames

minColumnNames

public final java.util.List<java.nio.ByteBuffer> minColumnNames

hasLegacyCounterShards

public final boolean hasLegacyCounterShards

repairedAt

public final long repairedAt

Constructor Detail

StatsMetadata

public StatsMetadata(EstimatedHistogram estimatedRowSize,
             EstimatedHistogram estimatedColumnCount,
             ReplayPosition replayPosition,
             long minTimestamp,
             long maxTimestamp,
             int maxLocalDeletionTime,
             double compressionRatio,
             StreamingHistogram estimatedTombstoneDropTime,
             int sstableLevel,
             java.util.List<java.nio.ByteBuffer> minColumnNames,
             java.util.List<java.nio.ByteBuffer> maxColumnNames,
             boolean hasLegacyCounterShards,
             long repairedAt)

Method Detail

getType

public MetadataType getType()

Specified by:

getType in class MetadataComponent

Returns:

Metadata component type

getEstimatedDroppableTombstoneRatio

public double getEstimatedDroppableTombstoneRatio(int gcBefore)

Parameters:

gcBefore - gc time in seconds

Returns:

estimated droppable tombstone ratio at given gcBefore time.

getDroppableTombstonesBefore

public double getDroppableTombstonesBefore(int gcBefore)

Parameters:

gcBefore - gc time in seconds

Returns:

amount of droppable tombstones

mutateLevel

public StatsMetadata mutateLevel(int newLevel)

mutateRepairedAt

public StatsMetadata mutateRepairedAt(long newRepairedAt)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object