# Uses of Package
org.apache.hadoop.mapreduce.lib.aggregate

- Packages that use org.apache.hadoop.mapreduce.lib.aggregate
  Package | Description
  --- | ---
  org.apache.hadoop.mapred.lib.aggregate |
  org.apache.hadoop.mapreduce.lib.aggregate |

- Classes in org.apache.hadoop.mapreduce.lib.aggregate used by org.apache.hadoop.mapred.lib.aggregate
  Class and Description
  DoubleValueSum This class implements a value aggregator that sums up a sequence of double values.
  LongValueMax This class implements a value aggregator that maintain the maximum of a sequence of long values.
  LongValueMin This class implements a value aggregator that maintain the minimum of a sequence of long values.
  LongValueSum This class implements a value aggregator that sums up a sequence of long values.
  StringValueMax This class implements a value aggregator that maintain the biggest of a sequence of strings.
  StringValueMin This class implements a value aggregator that maintain the smallest of a sequence of strings.
  UniqValueCount This class implements a value aggregator that dedupes a sequence of objects.
  UserDefinedValueAggregatorDescriptor This class implements a wrapper for a user defined value aggregator descriptor.
  ValueAggregator This interface defines the minimal protocol for value aggregators.
  ValueAggregatorBaseDescriptor This class implements the common functionalities of the subclasses of ValueAggregatorDescriptor class.
  ValueAggregatorDescriptor This interface defines the contract a value aggregator descriptor must support.
  ValueHistogram This class implements a value aggregator that computes the histogram of a sequence of strings.

- Classes in org.apache.hadoop.mapreduce.lib.aggregate used by org.apache.hadoop.mapreduce.lib.aggregate
  Class and Description
  ValueAggregator This interface defines the minimal protocol for value aggregators.
  ValueAggregatorDescriptor This interface defines the contract a value aggregator descriptor must support.

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