Uses of Package
org.apache.hadoop.mapred

Packages that use org.apache.hadoop.mapred

org.apache.hadoop.contrib.index.example
org.apache.hadoop.contrib.index.mapred
org.apache.hadoop.contrib.utils.join
org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.examples.dancing	This package is a distributed implementation of Knuth's dancing links algorithm that can run under Hadoop.
org.apache.hadoop.examples.terasort	This package consists of 3 map/reduce applications for Hadoop to compete in the annual terabyte sort competition.
org.apache.hadoop.mapred	A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.
org.apache.hadoop.mapred.jobcontrol	Utilities for managing dependent jobs.
org.apache.hadoop.mapred.join	Given a set of sorted datasets keyed with the same class and yielding equal partitions, it is possible to effect a join of those datasets prior to the map.
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.
org.apache.hadoop.mapred.lib.aggregate	Classes for performing various counting and aggregations.
org.apache.hadoop.mapred.lib.db	org.apache.hadoop.mapred.lib.db Package
org.apache.hadoop.mapred.pipes	Hadoop Pipes allows C++ code to use Hadoop DFS and map/reduce.
org.apache.hadoop.mapreduce
org.apache.hadoop.streaming	Hadoop Streaming is a utility which allows users to create and run Map-Reduce jobs with any executables (e.g.

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.contrib.index.example

FileInputFormat
Deprecated. Use FileInputFormat instead.

FileSplit
Deprecated. Use FileSplit instead.

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

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.contrib.index.mapred

FileOutputFormat
A base class for OutputFormat.

InputFormat
Deprecated. Use InputFormat instead.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

MapReduceBase
Deprecated.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

OutputFormat
Deprecated. Use OutputFormat instead.

Partitioner
Deprecated. Use Partitioner instead.

RecordWriter
RecordWriter writes the output <key, value> pairs to an output file.

Reducer
Deprecated. Use Reducer instead.

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.contrib.utils.join

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

Reducer
Deprecated. Use Reducer instead.

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.examples

FileInputFormat
Deprecated. Use FileInputFormat instead.

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

MapReduceBase
Deprecated.

MultiFileInputFormat
Deprecated. Use CombineFileInputFormat instead

MultiFileSplit
Deprecated. Use CombineFileSplit instead

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

Partitioner
Deprecated. Use Partitioner instead.

RecordReader
RecordReader reads <key, value> pairs from an InputSplit.

Reducer
Deprecated. Use Reducer instead.

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.

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.examples.dancing

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

MapReduceBase
Deprecated.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

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.examples.terasort

FileInputFormat
Deprecated. Use FileInputFormat instead.

FileOutputFormat
A base class for OutputFormat.

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

MapReduceBase
Deprecated.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

OutputFormat
Deprecated. Use OutputFormat instead.

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.

TextOutputFormat
Deprecated. Use TextOutputFormat instead.

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
Deprecated. Use Counters instead.

Counters.Counter
Deprecated. A counter record, comprising its name and value.

Counters.Group
Deprecated. 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
Deprecated. Use FileInputFormat instead.

FileOutputFormat
A base class for OutputFormat.

FileSplit
Deprecated. Use FileSplit instead.

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

InvalidJobConfException
This exception is thrown when jobconf misses some mendatory attributes or value of some attributes is invalid.

JobClient.TaskStatusFilter

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

JobContext
Deprecated. Use JobContext instead.

JobHistory.JobInfo
Helper class for logging or reading back events related to job start, finish or failure.

JobHistory.Keys
Job history files contain key="value" pairs, where keys belong to this enum.

JobHistory.Listener
Callback interface for reading back log events from JobHistory.

JobHistory.RecordTypes
Record types are identifiers for each line of log in history files.

JobHistory.Task
Helper class for logging or reading back events related to Task's start, finish or failure.

JobHistory.TaskAttempt
Base class for Map and Reduce TaskAttempts.

JobHistory.Values
This enum contains some of the values commonly used by history log events.

JobID
Deprecated.

JobPriority
Used to describe the priority of the running job.

JobProfile
A JobProfile is a MapReduce primitive.

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.

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

JobTracker.State

Mapper
Deprecated. Use Mapper instead.

MapRunnable
Deprecated. Use Mapper instead.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

OutputCommitter
Deprecated. Use OutputCommitter instead.

OutputFormat
Deprecated. Use OutputFormat instead.

Partitioner
Deprecated. Use Partitioner instead.

RecordReader
RecordReader reads <key, value> pairs from an InputSplit.

RecordWriter
RecordWriter writes the output <key, value> pairs to an output file.

Reducer
Deprecated. Use Reducer instead.

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.

SequenceFileInputFilter.Filter
filter interface

SequenceFileInputFilter.FilterBase
base class for Filters

SequenceFileInputFormat
Deprecated. Use SequenceFileInputFormat instead.

SequenceFileOutputFormat
Deprecated. Use SequenceFileOutputFormat instead.

TaskAttemptContext
Deprecated. Use TaskAttemptContext instead.

TaskAttemptID
Deprecated.

TaskCompletionEvent
This is used to track task completion events on job tracker.

TaskCompletionEvent.Status

TaskID
Deprecated.

TaskLog.LogName
The filter for userlogs.

TaskReport
A report on the state of a task.

TIPStatus
The states of a TaskInProgress as seen by the JobTracker.

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 JobTracker.

JobConf
Deprecated. Use Configuration instead

JobID
Deprecated.

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.join

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobConf
Deprecated. Use Configuration instead

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
Deprecated. Use FileInputFormat instead.

FileOutputFormat
A base class for OutputFormat.

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

MapReduceBase
Deprecated.

MapRunnable
Deprecated. Use Mapper instead.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

OutputFormat
Deprecated. Use OutputFormat instead.

Partitioner
Deprecated. Use Partitioner instead.

RecordReader
RecordReader reads <key, value> pairs from an InputSplit.

RecordWriter
RecordWriter writes the output <key, value> pairs to an output file.

Reducer
Deprecated. Use Reducer instead.

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
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

Mapper
Deprecated. Use Mapper instead.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

Reducer
Deprecated. Use Reducer instead.

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
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

OutputFormat
Deprecated. Use OutputFormat instead.

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
Deprecated. Use Configuration instead

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
Deprecated.

RawKeyValueIterator
RawKeyValueIterator is an iterator used to iterate over the raw keys and values during sort/merge of intermediate data.

TaskCompletionEvent
This is used to track task completion events on job tracker.

Classes in org.apache.hadoop.mapred used by org.apache.hadoop.streaming

FileInputFormat
Deprecated. Use FileInputFormat instead.

FileSplit
Deprecated. Use FileSplit instead.

InputFormat
Deprecated. Use InputFormat instead.

InputSplit
Deprecated. Use InputSplit instead.

JobClient
JobClient is the primary interface for the user-job to interact with the JobTracker.

JobConf
Deprecated. Use Configuration instead

JobConfigurable
Deprecated.

JobID
Deprecated.

KeyValueTextInputFormat
An InputFormat for plain text files.

Mapper
Deprecated. Use Mapper instead.

MapRunnable
Deprecated. Use Mapper instead.

MapRunner
Default MapRunnable implementation.

OutputCollector
Collects the <key, value> pairs output by Mappers and Reducers.

RecordReader
RecordReader reads <key, value> pairs from an InputSplit.

Reducer
Deprecated. Use Reducer instead.

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.