Uses of Package
org.apache.nutch.mapReduce

Packages that use org.apache.nutch.mapReduce

org.apache.nutch.mapReduce	A system for scalable, fault-tolerant, distributed computation over large data collections.
org.apache.nutch.mapReduce.lib	Library of generally useful mappers, reducers, and partitioners.

Classes in org.apache.nutch.mapReduce used by org.apache.nutch.mapReduce

Configurable
That what may be configured.

FileSplit
A section of an input file.

InputFormat
An input data format.

InputFormatBase
A base class for InputFormat.

InterTrackerProtocol
Protocol that a TaskTracker and the central JobTracker use to communicate.

JobConf
A map/reduce job configuration.

JobProfile
A JobProfile is a MapReduce primitive.

JobStatus
Describes the current status of a job.

JobSubmissionProtocol
Protocol that a JobClient and the central JobTracker use to communicate.

JobTracker
JobTracker is the central location for submitting and tracking MR jobs in a network environment.

JobTracker.JobInProgress

MapOutputFile
A local file to be transferred via the MapOutputProtocol.

MapOutputLocation
The location of a map output file, as passed to a reduce task via the InterTrackerProtocol.

MapOutputProtocol
Protocol that a reduce task uses to retrieve output data from a map task's tracker.

MRConstants
Some handy constants

OutputCollector
Passed to Mapper and Reducer implementations to collect output data.

OutputFormat
An output data format.

RecordReader
Reads key/value pairs from an input file FileSplit.

RecordWriter
Writes key/value pairs to an output file.

RunningJob
Includes details on a running MapReduce job.

Task
Base class for tasks.

TaskStatus
Describes the current status of a task.

TaskTracker
TaskTracker is a process that starts and tracks MR Tasks in a networked environment.

TaskTrackerStatus
A TaskTrackerStatus is a MapReduce primitive.

TaskUmbilicalProtocol
Protocol that task child process uses to contact its parent process.

Classes in org.apache.nutch.mapReduce used by org.apache.nutch.mapReduce.lib

Configurable
That what may be configured.

JobConf
A map/reduce job configuration.

Mapper
Maps input key/value pairs to a set of intermediate key/value pairs.

OutputCollector
Passed to Mapper and Reducer implementations to collect output data.

Partitioner
Partitions the key space.

Reducer
Reduces a set of intermediate values which share a key to a smaller set of values.