org.apache.hadoop.mapred.lib.aggregate

接口

• ValueAggregator
• ValueAggregatorDescriptor

类

• DoubleValueSum
• LongValueMax
• LongValueMin
• LongValueSum
• StringValueMax
• StringValueMin
• UniqValueCount
• UserDefinedValueAggregatorDescriptor
• ValueAggregatorBaseDescriptor
• ValueAggregatorCombiner
• ValueAggregatorJob
• ValueAggregatorJobBase
• ValueAggregatorMapper
• ValueAggregatorReducer
• ValueHistogram