Uses of Class
org.apache.hadoop.mapred.MapReduceBase

Packages that use MapReduceBase
org.apache.hadoop.contrib.index.mapred   
org.apache.hadoop.mapred.lib Library of generally useful mappers, reducers, and partitioners. 
 

Uses of MapReduceBase in org.apache.hadoop.contrib.index.mapred
 

Subclasses of MapReduceBase in org.apache.hadoop.contrib.index.mapred
 class IndexUpdateCombiner
          This combiner combines multiple intermediate forms into one intermediate form.
 class IndexUpdateMapper<K extends WritableComparable,V extends Writable>
          This class applies local analysis on a key-value pair and then convert the result docid-operation pair to a shard-and-intermediate form pair.
 class IndexUpdateReducer
          This reducer applies to a shard the changes for it.
 

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

Subclasses of MapReduceBase in org.apache.hadoop.mapred.lib
 class IdentityMapper<K,V>
          Implements the identity function, mapping inputs directly to outputs.
 class IdentityReducer<K,V>
          Performs no reduction, writing all input values directly to the output.
 class InverseMapper<K,V>
          A Mapper that swaps keys and values.
 class LongSumReducer<K>
          A Reducer that sums long values.
 class RegexMapper<K>
          A Mapper that extracts text matching a regular expression.
 class TokenCountMapper<K>
          A Mapper that maps text values into pairs.
 



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