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

Class PercentileEstValueAggregator

java.lang.Object

org.apache.pinot.segment.local.aggregator.PercentileEstValueAggregator

All Implemented Interfaces:

ValueAggregator<Object,QuantileDigest>

public class PercentileEstValueAggregator
extends Object
implements ValueAggregator<Object,QuantileDigest>

Field Summary

Fields

Modifier and Type	Field	Description
static FieldSpec.DataType	AGGREGATED_VALUE_TYPE
static double	DEFAULT_MAX_ERROR

Constructor Summary

Constructors

Constructor	Description
PercentileEstValueAggregator()

Method Summary

Modifier and Type	Method	Description
QuantileDigest	applyAggregatedValue(QuantileDigest value, QuantileDigest aggregatedValue)	Applies an aggregated value to the current aggregated value.
QuantileDigest	applyRawValue(QuantileDigest value, Object rawValue)	Applies a raw value to the current aggregated value.
QuantileDigest	cloneAggregatedValue(QuantileDigest value)	Clones an aggregated value.
QuantileDigest	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.
QuantileDigest	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(QuantileDigest 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_MAX_ERROR

public static final double DEFAULT_MAX_ERROR

See Also:

Constant Field Values

Constructor Detail

PercentileEstValueAggregator

public PercentileEstValueAggregator()

Method Detail

getAggregationType

public AggregationFunctionType getAggregationType()

Description copied from interface: ValueAggregator

Returns the type of the aggregation.

Specified by:

getAggregationType in interface ValueAggregator<Object,QuantileDigest>

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,QuantileDigest>

getInitialAggregatedValue

public QuantileDigest getInitialAggregatedValue(Object rawValue)

Description copied from interface: ValueAggregator

Returns the initial aggregated value.

Specified by:

getInitialAggregatedValue in interface ValueAggregator<Object,QuantileDigest>

applyRawValue

public QuantileDigest applyRawValue(QuantileDigest 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,QuantileDigest>

applyAggregatedValue

public QuantileDigest applyAggregatedValue(QuantileDigest value,
                                           QuantileDigest 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,QuantileDigest>

cloneAggregatedValue

public QuantileDigest cloneAggregatedValue(QuantileDigest value)

Description copied from interface: ValueAggregator

Clones an aggregated value.

Specified by:

cloneAggregatedValue in interface ValueAggregator<Object,QuantileDigest>

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,QuantileDigest>

serializeAggregatedValue

public byte[] serializeAggregatedValue(QuantileDigest value)

Description copied from interface: ValueAggregator

Serializes an aggregated value into a byte array.

Specified by:

serializeAggregatedValue in interface ValueAggregator<Object,QuantileDigest>

deserializeAggregatedValue

public QuantileDigest deserializeAggregatedValue(byte[] bytes)

Description copied from interface: ValueAggregator

De-serializes an aggregated value from a byte array.

Specified by:

deserializeAggregatedValue in interface ValueAggregator<Object,QuantileDigest>