namespace HadoopPipes

This interface defines the interface between application code and the foreign code interface to Hadoop Map/Reduce

class JobConf

A JobConf defines the properties for a job

class TaskContext

Task context provides the information about the task and job

class MapContext: public TaskContext

class ReduceContext: public TaskContext

class Closable

class Mapper: public Closable

The application's mapper class to do map

class Reducer: public Closable

The application's reducer class to do reduce

class Partitioner

User code to decide where each key should be sent

class RecordReader: public Closable

For applications that want to read the input directly for the map function they can define RecordReaders in C++

class RecordWriter: public Closable

An object to write key/value pairs as they are emited from the reduce

class Factory

A factory to create the necessary application objects

bool runTask(const Factory& factory)

Run the assigned task in the framework.

template<class mapper, class reducer> class TemplateFactory2: public Factory

template<class mapper, class reducer, class partitioner> class TemplateFactory3: public TemplateFactory2<mapper, reducer>

template<class mapper, class reducer> class TemplateFactory3<mapper, reducer, void>: public TemplateFactory2<mapper, reducer>

template<class mapper, class reducer, class partitioner, class combiner> class TemplateFactory4: public TemplateFactory3<mapper, reducer, partitioner>

template<class mapper, class reducer, class partitioner> class TemplateFactory4<mapper,reducer,partitioner,void>: public TemplateFactory3<mapper, reducer, partitioner>

template<class mapper, class reducer, class partitioner, class combiner, class recordReader> class TemplateFactory5: public TemplateFactory4<mapper, reducer, partitioner, combiner>

template<class mapper, class reducer, class partitioner,class combiner> class TemplateFactory5<mapper,reducer,partitioner,combiner,void>: public TemplateFactory4<mapper, reducer, partitioner, combiner>

template<class mapper, class reducer, class partitioner=void, class combiner=void, class recordReader=void, class recordWriter=void> class TemplateFactory: public TemplateFactory5<mapper, reducer, partitioner, combiner, recordReader>

template<class mapper, class reducer, class partitioner, class combiner, class recordReader> class TemplateFactory mapper reducer partitioner combiner recordReader void: public TemplateFactory5<mapper, reducer, partitioner, combiner, recordReader>

Documentation

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