Uses of Interface
org.apache.hadoop.mapred.Mapper

Packages that use Mapper
org.apache.hadoop.abacus Hadoop based Abacus is a specialization of map/reduce framework, specilizing for performing various counting and aggregations. 
org.apache.hadoop.examples Hadoop example code. 
org.apache.hadoop.mapred.lib Library of generally useful mappers, reducers, and partitioners. 
org.apache.hadoop.streaming   
org.apache.hadoop.tools   
org.apache.hadoop.util Common utilities. 
 

Uses of Mapper in org.apache.hadoop.abacus
 

Classes in org.apache.hadoop.abacus that implement Mapper
 class JobBase
          A common base implementing some statics collecting mechanisms that are commonly used in a typical map/reduce job.
 class ValueAggregatorCombiner
          This class implements the generic combiner of Abacus.
 class ValueAggregatorJobBase
          This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Abacus.
 class ValueAggregatorMapper
          This class implements the generic mapper of Abacus.
 class ValueAggregatorReducer
          This class implements the generic reducer of Abacus.
 

Uses of Mapper in org.apache.hadoop.examples
 

Classes in org.apache.hadoop.examples that implement Mapper
static class PiEstimator.PiMapper
          Mappper class for Pi estimation.
static class WordCount.MapClass
          Counts the words in each line.
 

Uses of Mapper in org.apache.hadoop.mapred.lib
 

Classes in org.apache.hadoop.mapred.lib that implement Mapper
 class IdentityMapper
          Implements the identity function, mapping inputs directly to outputs.
 class InverseMapper
          A Mapper that swaps keys and values.
 class RegexMapper
          A Mapper that extracts text matching a regular expression.
 class TokenCountMapper
          A Mapper that maps text values into pairs.
 

Uses of Mapper in org.apache.hadoop.streaming
 

Classes in org.apache.hadoop.streaming that implement Mapper
 class PipeMapper
          A generic Mapper bridge.
 

Uses of Mapper in org.apache.hadoop.tools
 

Classes in org.apache.hadoop.tools that implement Mapper
static class Logalyzer.LogRegexMapper
          A Mapper that extracts text matching a regular expression.
 

Uses of Mapper in org.apache.hadoop.util
 

Classes in org.apache.hadoop.util that implement Mapper
static class CopyFiles.FSCopyFilesMapper
          DFSCopyFilesMapper: The mapper for copying files from the DFS.
static class CopyFiles.HTTPCopyFilesMapper
           
 



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