Package org.apache.hadoop.mapred.lib.aggregate

Interface ValueAggregator<E>

All Superinterfaces:

ValueAggregator<E>

All Known Implementing Classes:

DoubleValueSum, LongValueMax, LongValueMin, LongValueSum, StringValueMax, StringValueMin, UniqValueCount, ValueHistogram

@Public
@Stable
public interface ValueAggregator<E>
extends ValueAggregator<E>

This interface defines the minimal protocol for value aggregators.

Method Summary

Methods inherited from interface org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator

addNextValue, getCombinerOutput, getReport, reset