Uses of Interface
org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator

Packages that use ValueAggregator

org.apache.hadoop.mapred.lib.aggregate
org.apache.hadoop.mapreduce.lib.aggregate

Uses of ValueAggregator in org.apache.hadoop.mapred.lib.aggregate

Subinterfaces of ValueAggregator in org.apache.hadoop.mapred.lib.aggregate

interface

ValueAggregator<E> This interface defines the minimal protocol for value aggregators.

Uses of ValueAggregator in org.apache.hadoop.mapreduce.lib.aggregate

Classes in org.apache.hadoop.mapreduce.lib.aggregate that implement ValueAggregator

class	DoubleValueSum This class implements a value aggregator that sums up a sequence of double values.
class	LongValueMax This class implements a value aggregator that maintain the maximum of a sequence of long values.
class	LongValueMin This class implements a value aggregator that maintain the minimum of a sequence of long values.
class	LongValueSum This class implements a value aggregator that sums up a sequence of long values.
class	StringValueMax This class implements a value aggregator that maintain the biggest of a sequence of strings.
class	StringValueMin This class implements a value aggregator that maintain the smallest of a sequence of strings.
class	UniqValueCount This class implements a value aggregator that dedupes a sequence of objects.
class	ValueHistogram This class implements a value aggregator that computes the histogram of a sequence of strings.

Methods in org.apache.hadoop.mapreduce.lib.aggregate that return ValueAggregator

static ValueAggregator

ValueAggregatorBaseDescriptor.generateValueAggregator(String type, long uniqCount)