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

Packages that use OutputCollector

Package	Description
org.apache.hadoop.mapred
org.apache.hadoop.mapred.lib
org.apache.hadoop.mapred.lib.aggregate

Uses of OutputCollector in org.apache.hadoop.mapred

Methods in org.apache.hadoop.mapred with parameters of type OutputCollector

Modifier and Type	Method and Description
void	Mapper.map(K1 key, V1 value, OutputCollector<K2,V2> output, Reporter reporter) Maps a single input key/value pair into an intermediate key/value pair.
void	Reducer.reduce(K2 key, Iterator<V2> values, OutputCollector<K3,V3> output, Reporter reporter) Reduces values for a given key.
void	MapRunner.run(RecordReader<K1,V1> input, OutputCollector<K2,V2> output, Reporter reporter)
void	MapRunnable.run(RecordReader<K1,V1> input, OutputCollector<K2,V2> output, Reporter reporter) Start mapping input <key, value> pairs.

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

Methods in org.apache.hadoop.mapred.lib that return OutputCollector

Modifier and Type	Method and Description
OutputCollector	MultipleOutputs.getCollector(String namedOutput, Reporter reporter) Gets the output collector for a named output.
OutputCollector	MultipleOutputs.getCollector(String namedOutput, String multiName, Reporter reporter) Gets the output collector for a multi named output.

Methods in org.apache.hadoop.mapred.lib with parameters of type OutputCollector

Modifier and Type	Method and Description
void	RegexMapper.map(K key, Text value, OutputCollector<Text,LongWritable> output, Reporter reporter)
void	TokenCountMapper.map(K key, Text value, OutputCollector<Text,LongWritable> output, Reporter reporter)
void	IdentityMapper.map(K key, V val, OutputCollector<K,V> output, Reporter reporter) The identity function.
void	FieldSelectionMapReduce.map(K key, V val, OutputCollector<Text,Text> output, Reporter reporter) The identify function.
void	InverseMapper.map(K key, V value, OutputCollector<V,K> output, Reporter reporter) The inverse function.
void	ChainMapper.map(Object key, Object value, OutputCollector output, Reporter reporter) Chains the map(...) methods of the Mappers in the chain.
void	LongSumReducer.reduce(K key, Iterator<LongWritable> values, OutputCollector<K,LongWritable> output, Reporter reporter)
void	IdentityReducer.reduce(K key, Iterator<V> values, OutputCollector<K,V> output, Reporter reporter) Writes all keys and values directly to output.
void	ChainReducer.reduce(Object key, Iterator values, OutputCollector output, Reporter reporter) Chains the reduce(...) method of the Reducer with the map(...) methods of the Mappers in the chain.
void	FieldSelectionMapReduce.reduce(Text key, Iterator<Text> values, OutputCollector<Text,Text> output, Reporter reporter)
void	MultithreadedMapRunner.run(RecordReader<K1,V1> input, OutputCollector<K2,V2> output, Reporter reporter)

Uses of OutputCollector in org.apache.hadoop.mapred.lib.aggregate

Methods in org.apache.hadoop.mapred.lib.aggregate with parameters of type OutputCollector

Modifier and Type	Method and Description
void	ValueAggregatorMapper.map(K1 key, V1 value, OutputCollector<Text,Text> output, Reporter reporter) the map function.
void	ValueAggregatorCombiner.map(K1 arg0, V1 arg1, OutputCollector<Text,Text> arg2, Reporter arg3) Do nothing.
void	ValueAggregatorReducer.map(K1 arg0, V1 arg1, OutputCollector<Text,Text> arg2, Reporter arg3) Do nothing.
void	ValueAggregatorMapper.reduce(Text arg0, Iterator<Text> arg1, OutputCollector<Text,Text> arg2, Reporter arg3) Do nothing.
void	ValueAggregatorCombiner.reduce(Text key, Iterator<Text> values, OutputCollector<Text,Text> output, Reporter reporter) Combines values for a given key.
void	ValueAggregatorReducer.reduce(Text key, Iterator<Text> values, OutputCollector<Text,Text> output, Reporter reporter)