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

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

- Classes in org.apache.hadoop.mapred.lib.aggregate used by org.apache.hadoop.mapred.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.
  ValueAggregatorJobBase This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate.

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