Package org.apache.pinot.segment.local.aggregator

Class PercentileTDigestValueAggregator

java.lang.Object

org.apache.pinot.segment.local.aggregator.PercentileTDigestValueAggregator

All Implemented Interfaces:

ValueAggregator<Object,com.tdunning.math.stats.TDigest>

public class PercentileTDigestValueAggregator
extends Object
implements ValueAggregator<Object,com.tdunning.math.stats.TDigest>

Field Summary

Fields

Modifier and Type	Field	Description
static FieldSpec.DataType	AGGREGATED_VALUE_TYPE
static int	DEFAULT_TDIGEST_COMPRESSION

Constructor Summary

Constructors

Constructor	Description
PercentileTDigestValueAggregator()

Method Summary

Modifier and Type	Method	Description
com.tdunning.math.stats.TDigest	applyAggregatedValue(com.tdunning.math.stats.TDigest value, com.tdunning.math.stats.TDigest aggregatedValue)	Applies an aggregated value to the current aggregated value.
com.tdunning.math.stats.TDigest	applyRawValue(com.tdunning.math.stats.TDigest value, Object rawValue)	Applies a raw value to the current aggregated value.
com.tdunning.math.stats.TDigest	cloneAggregatedValue(com.tdunning.math.stats.TDigest value)	Clones an aggregated value.
com.tdunning.math.stats.TDigest	deserializeAggregatedValue(byte[] bytes)	De-serializes an aggregated value from a byte array.
FieldSpec.DataType	getAggregatedValueType()	Returns the data type of the aggregated value.
AggregationFunctionType	getAggregationType()	Returns the type of the aggregation.
com.tdunning.math.stats.TDigest	getInitialAggregatedValue(Object rawValue)	Returns the initial aggregated value.
int	getMaxAggregatedValueByteSize()	Returns the maximum size in bytes of the aggregated values seen so far.
byte[]	serializeAggregatedValue(com.tdunning.math.stats.TDigest value)	Serializes an aggregated value into a byte array.

Methods inherited from class java.lang.Object

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

Field Detail

AGGREGATED_VALUE_TYPE

public static final FieldSpec.DataType AGGREGATED_VALUE_TYPE

DEFAULT_TDIGEST_COMPRESSION

public static final int DEFAULT_TDIGEST_COMPRESSION

See Also:

Constant Field Values

Constructor Detail

PercentileTDigestValueAggregator

public PercentileTDigestValueAggregator()

Method Detail

getAggregationType

public AggregationFunctionType getAggregationType()

Description copied from interface: ValueAggregator

Returns the type of the aggregation.

Specified by:

getAggregationType in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

getAggregatedValueType

public FieldSpec.DataType getAggregatedValueType()

Description copied from interface: ValueAggregator

Returns the data type of the aggregated value.

Specified by:

getAggregatedValueType in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

getInitialAggregatedValue

public com.tdunning.math.stats.TDigest getInitialAggregatedValue(Object rawValue)

Description copied from interface: ValueAggregator

Returns the initial aggregated value.

Specified by:

getInitialAggregatedValue in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

applyRawValue

public com.tdunning.math.stats.TDigest applyRawValue(com.tdunning.math.stats.TDigest value,
                                                     Object rawValue)

Description copied from interface: ValueAggregator

Applies a raw value to the current aggregated value.

NOTE: if value is mutable, will directly modify the value.

Specified by:

applyRawValue in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

applyAggregatedValue

public com.tdunning.math.stats.TDigest applyAggregatedValue(com.tdunning.math.stats.TDigest value,
                                                            com.tdunning.math.stats.TDigest aggregatedValue)

Description copied from interface: ValueAggregator

Applies an aggregated value to the current aggregated value.

NOTE: if value is mutable, will directly modify the value.

Specified by:

applyAggregatedValue in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

cloneAggregatedValue

public com.tdunning.math.stats.TDigest cloneAggregatedValue(com.tdunning.math.stats.TDigest value)

Description copied from interface: ValueAggregator

Clones an aggregated value.

Specified by:

cloneAggregatedValue in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

getMaxAggregatedValueByteSize

public int getMaxAggregatedValueByteSize()

Description copied from interface: ValueAggregator

Returns the maximum size in bytes of the aggregated values seen so far.

Specified by:

getMaxAggregatedValueByteSize in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

serializeAggregatedValue

public byte[] serializeAggregatedValue(com.tdunning.math.stats.TDigest value)

Description copied from interface: ValueAggregator

Serializes an aggregated value into a byte array.

Specified by:

serializeAggregatedValue in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>

deserializeAggregatedValue

public com.tdunning.math.stats.TDigest deserializeAggregatedValue(byte[] bytes)

Description copied from interface: ValueAggregator

De-serializes an aggregated value from a byte array.

Specified by:

deserializeAggregatedValue in interface ValueAggregator<Object,com.tdunning.math.stats.TDigest>