Uses of Package
org.apache.hadoop.mapred

Packages that use org.apache.hadoop.mapred
org.apache.hadoop.examples Hadoop example code. 
org.apache.hadoop.io Generic i/o code for use when reading and writing data to the network, to databases, and to files. 
org.apache.hadoop.mapred A system for scalable, fault-tolerant, distributed computation over large data collections. 
org.apache.hadoop.mapred.lib Library of generally useful mappers, reducers, and partitioners. 
org.apache.hadoop.tools   
org.apache.hadoop.util Common utilities. 
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.examples
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
MapReduceBase
          Base class for Mapper and Reducer implementations.
OutputCollector
          Passed to Mapper and Reducer implementations to collect output data.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
Reporter
          Passed to application code to permit alteration of status.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.io
JobConf
          A map/reduce job configuration.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred
ClusterStatus
          Summarizes the size and current state of the cluster.
FileSplit
          A section of an input file.
InputFormat
          An input data format.
InputFormatBase
          A base class for InputFormat.
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
JobStatus
          Describes the current status of a job.
JobTracker
          JobTracker is the central location for submitting and tracking MR jobs in a network environment.
MapRunnable
          Expert: Permits greater control of map processing.
OutputCollector
          Passed to Mapper and Reducer implementations to collect output data.
OutputFormat
          An output data format.
OutputFormatBase
          A base class for OutputFormat.
Partitioner
          Partitions the key space.
RecordReader
          Reads key/value pairs from an input file FileSplit.
RecordWriter
          Writes key/value pairs to an output file.
Reporter
          Passed to application code to permit alteration of status.
RunningJob
          Includes details on a running MapReduce job.
SequenceFileInputFilter.Filter
          filter interface
SequenceFileInputFilter.FilterBase
          base calss for Filters
SequenceFileInputFormat
          An InputFormat for SequenceFiles.
TaskReport
          A report on the state of a task.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.lib
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
MapReduceBase
          Base class for Mapper and Reducer implementations.
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.
Reporter
          Passed to application code to permit alteration of status.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.tools
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
MapReduceBase
          Base class for Mapper and Reducer implementations.
OutputCollector
          Passed to Mapper and Reducer implementations to collect output data.
Reporter
          Passed to application code to permit alteration of status.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.util
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
MapReduceBase
          Base class for Mapper and Reducer implementations.
OutputCollector
          Passed to Mapper and Reducer implementations to collect output data.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
Reporter
          Passed to application code to permit alteration of status.
 



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