# Hierarchy For Package org.apache.hadoop.mapreduce.lib.aggregate

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.hadoop.mapreduce.lib.aggregate.DoubleValueSum (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.lib.aggregate.LongValueMax (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.lib.aggregate.LongValueMin (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.lib.aggregate.LongValueSum (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.Mapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
    - org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorMapper<K1,V1>
  - org.apache.hadoop.mapreduce.Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
    - org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorCombiner<K1,V1>
    - org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorReducer<K1,V1>
  - org.apache.hadoop.mapreduce.lib.aggregate.StringValueMax (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.lib.aggregate.StringValueMin (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.lib.aggregate.UniqValueCount (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)
  - org.apache.hadoop.mapreduce.lib.aggregate.UserDefinedValueAggregatorDescriptor (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorDescriptor)
  - org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorBaseDescriptor (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorDescriptor)
  - org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorJob
  - org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorJobBase<K1,V1>
  - org.apache.hadoop.mapreduce.lib.aggregate.ValueHistogram (implements org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>)

## Interface Hierarchy

- org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregator<E>
- org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorDescriptor

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