Uses of Package
org.apache.hadoop.mapreduce

Packages that use org.apache.hadoop.mapreduce
org.apache.hadoop.mapred   
org.apache.hadoop.mapred.lib   
org.apache.hadoop.mapreduce   
org.apache.hadoop.mapreduce.counters This package contains the implementations of different types of map-reduce counters. 
org.apache.hadoop.mapreduce.lib.aggregate   
org.apache.hadoop.mapreduce.lib.chain   
org.apache.hadoop.mapreduce.lib.db   
org.apache.hadoop.mapreduce.lib.fieldsel   
org.apache.hadoop.mapreduce.lib.input   
org.apache.hadoop.mapreduce.lib.jobcontrol   
org.apache.hadoop.mapreduce.lib.join   
org.apache.hadoop.mapreduce.lib.map   
org.apache.hadoop.mapreduce.lib.output   
org.apache.hadoop.mapreduce.lib.partition   
org.apache.hadoop.mapreduce.lib.reduce   
org.apache.hadoop.mapreduce.task   
org.apache.hadoop.mapreduce.tools   
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapred
Cluster
          Provides a way to access information about the map/reduce cluster.
Counter
          A named counter that tracks the progress of a map/reduce job.
Counters
          Counters holds per job/task counters, defined either by the Map-Reduce framework or applications.
ID
          A general identifier, which internally stores the id as an integer.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
JobID
          JobID represents the immutable and unique identifier for the job.
JobStatus
          Describes the current status of a job.
OutputCommitter
          OutputCommitter describes the commit of task output for a Map-Reduce job.
QueueInfo
          Class that contains the information regarding the Job Queues which are maintained by the Hadoop Map/Reduce framework.
TaskAttemptContext
          The context for task attempts.
TaskAttemptID
          TaskAttemptID represents the immutable and unique identifier for a task attempt.
TaskCompletionEvent
          This is used to track task completion events on job tracker.
TaskID
          TaskID represents the immutable and unique identifier for a Map or Reduce Task.
TaskType
          Enum for map, reduce, job-setup, job-cleanup, task-cleanup task types.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapred.lib
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
RecordReader
          The record reader breaks the data into key/value pairs for input to the Mapper.
TaskAttemptContext
          The context for task attempts.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce
Cluster
          Provides a way to access information about the map/reduce cluster.
ClusterMetrics
          Status information on the current state of the Map-Reduce cluster.
Counter
          A named counter that tracks the progress of a map/reduce job.
Counters
          Counters holds per job/task counters, defined either by the Map-Reduce framework or applications.
ID
          A general identifier, which internally stores the id as an integer.
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
Job
          The job submitter's view of the Job.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
JobCounter
           
JobID
          JobID represents the immutable and unique identifier for the job.
JobPriority
          Used to describe the priority of the running job.
JobStatus
          Describes the current status of a job.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
OutputCommitter
          OutputCommitter describes the commit of task output for a Map-Reduce job.
OutputFormat
          OutputFormat describes the output-specification for a Map-Reduce job.
Partitioner
          Partitions the key space.
QueueAclsInfo
          Class to encapsulate Queue ACLs for a particular user.
QueueInfo
          Class that contains the information regarding the Job Queues which are maintained by the Hadoop Map/Reduce framework.
QueueState
          Enum representing queue state
RecordReader
          The record reader breaks the data into key/value pairs for input to the Mapper.
RecordWriter
          RecordWriter writes the output <key, value> pairs to an output file.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
TaskAttemptContext
          The context for task attempts.
TaskAttemptID
          TaskAttemptID represents the immutable and unique identifier for a task attempt.
TaskCompletionEvent
          This is used to track task completion events on job tracker.
TaskCompletionEvent.Status
           
TaskCounter
           
TaskID
          TaskID represents the immutable and unique identifier for a Map or Reduce Task.
TaskInputOutputContext
          A context object that allows input and output from the task.
TaskTrackerInfo
          Information about TaskTracker.
TaskType
          Enum for map, reduce, job-setup, job-cleanup, task-cleanup task types.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.counters
Counter
          A named counter that tracks the progress of a map/reduce job.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.aggregate
Job
          The job submitter's view of the Job.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.chain
Job
          The job submitter's view of the Job.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.db
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
Job
          The job submitter's view of the Job.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
OutputCommitter
          OutputCommitter describes the commit of task output for a Map-Reduce job.
OutputFormat
          OutputFormat describes the output-specification for a Map-Reduce job.
RecordReader
          The record reader breaks the data into key/value pairs for input to the Mapper.
RecordWriter
          RecordWriter writes the output <key, value> pairs to an output file.
TaskAttemptContext
          The context for task attempts.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.fieldsel
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.input
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
Job
          The job submitter's view of the Job.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
RecordReader
          The record reader breaks the data into key/value pairs for input to the Mapper.
TaskAttemptContext
          The context for task attempts.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.jobcontrol
Job
          The job submitter's view of the Job.
JobID
          JobID represents the immutable and unique identifier for the job.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.join
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
RecordReader
          The record reader breaks the data into key/value pairs for input to the Mapper.
TaskAttemptContext
          The context for task attempts.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.map
Job
          The job submitter's view of the Job.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
MapContext
          The context that is given to the Mapper.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.output
Job
          The job submitter's view of the Job.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
OutputCommitter
          OutputCommitter describes the commit of task output for a Map-Reduce job.
OutputFormat
          OutputFormat describes the output-specification for a Map-Reduce job.
Partitioner
          Partitions the key space.
RecordWriter
          RecordWriter writes the output <key, value> pairs to an output file.
TaskAttemptContext
          The context for task attempts.
TaskInputOutputContext
          A context object that allows input and output from the task.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.partition
Job
          The job submitter's view of the Job.
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
Partitioner
          Partitions the key space.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.lib.reduce
ReduceContext
          The context passed to the Reducer.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.task
JobContext
          A read-only view of the job that is provided to the tasks while they are running.
 

Classes in org.apache.hadoop.mapreduce used by org.apache.hadoop.mapreduce.tools
Cluster
          Provides a way to access information about the map/reduce cluster.
Counters
          Counters holds per job/task counters, defined either by the Map-Reduce framework or applications.
Job
          The job submitter's view of the Job.
JobStatus
          Describes the current status of a job.
TaskAttemptID
          TaskAttemptID represents the immutable and unique identifier for a task attempt.
 



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