Name | Description | Type | Package | Framework |
DoubleValueSum | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop | |
LongValueMax | This class implements a value aggregator that maintain the maximum of a sequence of long values. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
LongValueMin | This class implements a value aggregator that maintain the minimum of a sequence of long values. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
LongValueSum | This class implements a value aggregator that sums up a sequence of long values. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
StringValueMax | This class implements a value aggregator that maintain the biggest of a sequence of strings. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
StringValueMin | This class implements a value aggregator that maintain the smallest of a sequence of strings. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
UniqValueCount | This class implements a value aggregator that dedupes a sequence of objects. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
UserDefinedValueAggregatorDescriptor | This class implements a wrapper for a user defined value aggregator It serves two functions: One is to create an object of | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregator | This interface defines the minimal protocol for value aggregators. | Interface | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorBaseDescriptor | This class implements the common functionalities of the subclasses of ValueAggregatorDescriptor class. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorCombiner | This class implements the generic combiner of Aggregate. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorDescriptor | This interface defines the contract a value aggregator descriptor must support. | Interface | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorJob | This is the main class for creating a map/reduce job using Aggregate framework. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorJobBase | This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorMapper | This class implements the generic mapper of Aggregate. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueAggregatorReducer | This class implements the generic reducer of Aggregate. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |
ValueHistogram | This class implements a value aggregator that computes the histogram of a sequence of strings. | Class | org.apache.hadoop.mapred.lib.aggregate | Apache Hadoop |