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

Packages that use ValueAggregator
org.apache.hadoop.mapred.lib.aggregate Classes for performing various counting and aggregations. 
org.apache.hadoop.mapreduce.lib.aggregate Classes for performing various counting and aggregations. 
 

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)
           
 



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