Uses of Package
org.apache.hadoop.mapred

Packages that use org.apache.hadoop.mapred
org.apache.hadoop.mapred   
org.apache.hadoop.mapred.jobcontrol   
org.apache.hadoop.mapred.join   
org.apache.hadoop.mapred.lib   
org.apache.hadoop.mapred.lib.aggregate   
org.apache.hadoop.mapred.lib.db   
org.apache.hadoop.mapred.pipes   
org.apache.hadoop.mapreduce   
org.apache.hadoop.mapreduce.security   
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred
ClusterStatus
          Status information on the current state of the Map-Reduce cluster.
Counters
          A set of named counters.
Counters.Counter
          A counter record, comprising its name and value.
Counters.Group
          Group of counters, comprising of counters from a particular counter Enum class.
FileAlreadyExistsException
          Used when target file already exists for any operation and is not configured to be overwritten.
FileInputFormat
          A base class for file-based InputFormat.
FileOutputFormat
          A base class for OutputFormat.
FileSplit
          A section of an input file.
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
InvalidJobConfException
          This exception is thrown when jobconf misses some mendatory attributes or value of some attributes is invalid.
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
JobContext
           
JobID
          JobID represents the immutable and unique identifier for the job.
JobPriority
          Used to describe the priority of the running job.
JobQueueInfo
          Class that contains the information regarding the Job Queues which are maintained by the Hadoop Map/Reduce framework.
JobStatus
          Describes the current status of a job.
Mapper
          Maps input key/value pairs to a set of intermediate key/value pairs.
MapRunnable
          Expert: Generic interface for Mappers.
OutputCollector
          Collects the <key, value> pairs output by Mappers and Reducers.
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.
RecordReader
          RecordReader reads <key, value> pairs from an InputSplit.
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.
Reporter
          A facility for Map-Reduce applications to report progress and update counters, status information etc.
RunningJob
          RunningJob is the user-interface to query for details on a running Map-Reduce job.
SequenceFileInputFormat
          An InputFormat for SequenceFiles.
SequenceFileOutputFormat
          An OutputFormat that writes SequenceFiles.
TaskAttemptContext
           
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
           
TaskID
          TaskID represents the immutable and unique identifier for a Map or Reduce Task.
TaskReport
          A report on the state of a task.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.jobcontrol
JobClient
          JobClient is the primary interface for the user-job to interact with the cluster.
JobConf
          A map/reduce job configuration.
JobID
          JobID represents the immutable and unique identifier for the job.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.join
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
JobConf
          A map/reduce job configuration.
RecordReader
          RecordReader reads <key, value> pairs from an InputSplit.
Reporter
          A facility for Map-Reduce applications to report progress and update counters, status information etc.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.lib
FileInputFormat
          A base class for file-based InputFormat.
FileOutputFormat
          A base class for OutputFormat.
FileSplit
          A section of an input file.
InputFormat
          InputFormat describes the input-specification for a Map-Reduce job.
InputSplit
          InputSplit represents the data to be processed by an individual Mapper.
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.
MapRunnable
          Expert: Generic interface for Mappers.
OutputCollector
          Collects the <key, value> pairs output by Mappers and Reducers.
OutputFormat
          OutputFormat describes the output-specification for a Map-Reduce job.
Partitioner
          Partitions the key space.
RecordReader
          RecordReader reads <key, value> pairs from an InputSplit.
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.
Reporter
          A facility for Map-Reduce applications to report progress and update counters, status information etc.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.lib.aggregate
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.
OutputCollector
          Collects the <key, value> pairs output by Mappers and Reducers.
Reducer
          Reduces a set of intermediate values which share a key to a smaller set of values.
Reporter
          A facility for Map-Reduce applications to report progress and update counters, status information etc.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.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.
JobConf
          A map/reduce job configuration.
JobConfigurable
          That what may be configured.
OutputFormat
          OutputFormat describes the output-specification for a Map-Reduce job.
RecordReader
          RecordReader reads <key, value> pairs from an InputSplit.
RecordWriter
          RecordWriter writes the output <key, value> pairs to an output file.
Reporter
          A facility for Map-Reduce applications to report progress and update counters, status information etc.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.pipes
JobConf
          A map/reduce job configuration.
RunningJob
          RunningJob is the user-interface to query for details on a running Map-Reduce job.
 

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapreduce
ID
          A general identifier, which internally stores the id as an integer.
TaskCompletionEvent
          This is used to track task completion events on job tracker.
 

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



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