org.apache.flink.contrib.operatorstatistics

Class OperatorStatisticsAccumulator

java.lang.Object

org.apache.flink.contrib.operatorstatistics.OperatorStatisticsAccumulator

All Implemented Interfaces:

Serializable, Cloneable, org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

public class OperatorStatisticsAccumulator
extends Object
implements org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

This accumulator wraps the class OperatorStatistics to track estimated values for count distinct and heavy hitters.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
OperatorStatisticsAccumulator()
OperatorStatisticsAccumulator(OperatorStatisticsConfig config)

Method Summary

Modifier and Type	Method and Description
void	add(Object value)
org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>	clone()
OperatorStatistics	getLocalValue()
void	merge(org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics> other)
void	resetLocal()

Methods inherited from class java.lang.Object

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

Constructor Detail

OperatorStatisticsAccumulator

public OperatorStatisticsAccumulator()

OperatorStatisticsAccumulator

public OperatorStatisticsAccumulator(OperatorStatisticsConfig config)

Method Detail

add

public void add(Object value)

Specified by:

add in interface org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

getLocalValue

public OperatorStatistics getLocalValue()

Specified by:

getLocalValue in interface org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

resetLocal

public void resetLocal()

Specified by:

resetLocal in interface org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

merge

public void merge(org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics> other)

Specified by:

merge in interface org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

clone

public org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics> clone()

Specified by:

clone in interface org.apache.flink.api.common.accumulators.Accumulator<Object,OperatorStatistics>

Overrides:

clone in class Object