Uses of Class
org.apache.hadoop.mapreduce.Reducer.Context

Packages that use Reducer.Context
org.apache.hadoop.examples Hadoop example code. 
org.apache.hadoop.examples.pi This package consists of a map/reduce application, distbbp, which computes exact binary digits of the mathematical constant π. 
org.apache.hadoop.mapreduce   
org.apache.hadoop.mapreduce.lib.aggregate Classes for performing various counting and aggregations. 
org.apache.hadoop.mapreduce.lib.chain   
org.apache.hadoop.mapreduce.lib.fieldsel   
org.apache.hadoop.mapreduce.lib.reduce   
 

Uses of Reducer.Context in org.apache.hadoop.examples
 

Methods in org.apache.hadoop.examples with parameters of type Reducer.Context
 void QuasiMonteCarlo.QmcReducer.cleanup(Reducer.Context context)
          Reduce task done, write output to a file.
protected  void BaileyBorweinPlouffe.BbpReducer.cleanup(Reducer.Context context)
          Write output to files.
 void QuasiMonteCarlo.QmcReducer.reduce(org.apache.hadoop.io.BooleanWritable isInside, Iterable<org.apache.hadoop.io.LongWritable> values, Reducer.Context context)
          Accumulate number of points inside/outside results from the mappers.
protected  void BaileyBorweinPlouffe.BbpReducer.reduce(org.apache.hadoop.io.LongWritable offset, Iterable<org.apache.hadoop.io.BytesWritable> values, Reducer.Context context)
          Concatenate map outputs.
 void SecondarySort.Reduce.reduce(SecondarySort.IntPair key, Iterable<org.apache.hadoop.io.IntWritable> values, Reducer.Context context)
           
 void WordCount.IntSumReducer.reduce(org.apache.hadoop.io.Text key, Iterable<org.apache.hadoop.io.IntWritable> values, Reducer.Context context)
           
 

Uses of Reducer.Context in org.apache.hadoop.examples.pi
 

Methods in org.apache.hadoop.examples.pi with parameters of type Reducer.Context
protected  void DistSum.ReduceSide.SummingReducer.reduce(org.apache.hadoop.io.IntWritable index, Iterable<SummationWritable> sums, Reducer.Context context)
           
 

Uses of Reducer.Context in org.apache.hadoop.mapreduce
 

Methods in org.apache.hadoop.mapreduce with parameters of type Reducer.Context
protected  void Reducer.cleanup(Reducer.Context context)
          Called once at the end of the task.
protected  void Reducer.reduce(KEYIN key, Iterable<VALUEIN> values, Reducer.Context context)
          This method is called once for each key.
 void Reducer.run(Reducer.Context context)
          Advanced application writers can use the Reducer.run(org.apache.hadoop.mapreduce.Reducer.Context) method to control how the reduce task works.
protected  void Reducer.setup(Reducer.Context context)
          Called once at the start of the task.
 

Uses of Reducer.Context in org.apache.hadoop.mapreduce.lib.aggregate
 

Methods in org.apache.hadoop.mapreduce.lib.aggregate with parameters of type Reducer.Context
 void ValueAggregatorCombiner.reduce(org.apache.hadoop.io.Text key, Iterable<org.apache.hadoop.io.Text> values, Reducer.Context context)
          Combines values for a given key.
 void ValueAggregatorReducer.reduce(org.apache.hadoop.io.Text key, Iterable<org.apache.hadoop.io.Text> values, Reducer.Context context)
           
 void ValueAggregatorReducer.setup(Reducer.Context context)
           
 

Uses of Reducer.Context in org.apache.hadoop.mapreduce.lib.chain
 

Methods in org.apache.hadoop.mapreduce.lib.chain with parameters of type Reducer.Context
 void ChainReducer.run(Reducer.Context context)
           
protected  void ChainReducer.setup(Reducer.Context context)
           
 

Uses of Reducer.Context in org.apache.hadoop.mapreduce.lib.fieldsel
 

Methods in org.apache.hadoop.mapreduce.lib.fieldsel with parameters of type Reducer.Context
 void FieldSelectionReducer.reduce(org.apache.hadoop.io.Text key, Iterable<org.apache.hadoop.io.Text> values, Reducer.Context context)
           
 void FieldSelectionReducer.setup(Reducer.Context context)
           
 

Uses of Reducer.Context in org.apache.hadoop.mapreduce.lib.reduce
 

Subclasses of Reducer.Context in org.apache.hadoop.mapreduce.lib.reduce
 class WrappedReducer.Context
           
 

Methods in org.apache.hadoop.mapreduce.lib.reduce that return Reducer.Context
 Reducer.Context WrappedReducer.getReducerContext(ReduceContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> reduceContext)
          A a wrapped WrappedReducer.Context for custom implementations.
 

Methods in org.apache.hadoop.mapreduce.lib.reduce with parameters of type Reducer.Context
 void IntSumReducer.reduce(Key key, Iterable<org.apache.hadoop.io.IntWritable> values, Reducer.Context context)
           
 void LongSumReducer.reduce(KEY key, Iterable<org.apache.hadoop.io.LongWritable> values, Reducer.Context context)
           
 



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