## Uses of Class
org.apache.hadoop.mapreduce.Mapper.Context

Packages that use Mapper.Context
org.apache.hadoop.examples: Hadoop example code.
org.apache.hadoop.mapreduce
org.apache.hadoop.mapreduce.lib.fieldsel
org.apache.hadoop.mapreduce.lib.input
org.apache.hadoop.mapreduce.lib.map

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

Methods in org.apache.hadoop.examples with parameters of type Mapper.Context
`void` `SecondarySort.MapClass.map(LongWritable inKey, Text inValue, Mapper.Context context)`
`void` `WordCount.TokenizerMapper.map(Object key, Text value, Mapper.Context context)`

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

Methods in org.apache.hadoop.mapreduce with parameters of type Mapper.Context
`protected void` `Mapper.cleanup(Mapper.Context context)` Called once at the end of the task.
`protected void` `Mapper.map(KEYIN key, VALUEIN value, Mapper.Context context)` Called once for each key/value pair in the input split.
`void` `Mapper.run(Mapper.Context context)` Expert users can override this method for more complete control over the execution of the Mapper.
`protected void` `Mapper.setup(Mapper.Context context)` Called once at the beginning of the task.

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

Methods in org.apache.hadoop.mapreduce.lib.fieldsel with parameters of type Mapper.Context
`void` `FieldSelectionMapper.map(K key, V val, Mapper.Context context)` The identify function.
`void` `FieldSelectionMapper.setup(Mapper.Context context)`

Uses of Mapper.Context in org.apache.hadoop.mapreduce.lib.input

Methods in org.apache.hadoop.mapreduce.lib.input with parameters of type Mapper.Context
`void` `DelegatingMapper.run(Mapper.Context context)`
`protected void` `DelegatingMapper.setup(Mapper.Context context)`

Uses of Mapper.Context in org.apache.hadoop.mapreduce.lib.map

Methods in org.apache.hadoop.mapreduce.lib.map with parameters of type Mapper.Context
`void` `InverseMapper.map(K key, V value, Mapper.Context context)` The inverse function.
`void` `TokenCounterMapper.map(Object key, Text value, Mapper.Context context)`
`void` `MultithreadedMapper.run(Mapper.Context context)` Run the application's maps using a thread pool.

Copyright © 2009 The Apache Software Foundation