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Packages that use org.apache.hadoop.mapred | |
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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.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.pipes | Hadoop Pipes allows C++ code to use Hadoop DFS and map/reduce. |
org.apache.hadoop.streaming | Hadoop Streaming is a utility which allows users to create and run Map-Reduce jobs with any executables (e.g. |
org.apache.hadoop.util | Common utilities. |
Classes in org.apache.hadoop.mapred used by org.apache.hadoop.contrib.index.example | |
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FileInputFormat
A base class for file-based InputFormat . |
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FileSplit
A section of an input file. |
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InputFormat
InputFormat describes the input-specification for a
Map-Reduce job. |
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InputSplit
InputSplit represents the data to be processed by an
individual Mapper . |
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JobConf
A map/reduce job configuration. |
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JobConfigurable
That what may be configured. |
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Mapper
Maps input key/value pairs to a set of intermediate key/value pairs. |
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OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
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RecordReader
RecordReader reads <key, value> pairs from an
InputSplit . |
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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 | |
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FileOutputFormat
A base class for OutputFormat . |
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InputFormat
InputFormat describes the input-specification for a
Map-Reduce job. |
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JobConf
A map/reduce job configuration. |
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JobConfigurable
That what may be configured. |
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Mapper
Maps input key/value pairs to a set of intermediate key/value pairs. |
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MapReduceBase
Base class for Mapper and Reducer implementations. |
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OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
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OutputFormat
OutputFormat describes the output-specification for a
Map-Reduce job. |
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Partitioner
Partitions the key space. |
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RecordWriter
RecordWriter writes the output <key, value> pairs
to an output file. |
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Reducer
Reduces a set of intermediate values which share a key to a smaller set of values. |
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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 | |
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JobConf
A map/reduce job configuration. |
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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 Mapper s
and Reducer s. |
|
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.examples | |
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FileInputFormat
A base class for file-based InputFormat . |
|
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. |
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MapReduceBase
Base class for Mapper and Reducer implementations. |
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MultiFileInputFormat
An abstract InputFormat that returns MultiFileSplit 's
in MultiFileInputFormat.getSplits(JobConf, int) method. |
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MultiFileSplit
A sub-collection of input files. |
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OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
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Partitioner
Partitions the key space. |
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RecordReader
RecordReader reads <key, value> pairs from an
InputSplit . |
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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.examples.dancing | |
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JobConf
A map/reduce job configuration. |
|
JobConfigurable
That what may be configured. |
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Mapper
Maps input key/value pairs to a set of intermediate key/value pairs. |
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MapReduceBase
Base class for Mapper and Reducer implementations. |
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OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
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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 | |
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ClusterStatus
Status information on the current state of the Map-Reduce cluster. |
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Counters
A set of named counters. |
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Counters.Counter
A counter record, comprising its name and value. |
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Counters.Group
Group of counters, comprising of counters from a particular
counter Enum class. |
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FileAlreadyExistsException
Used when target file already exists for any operation and is not configured to be overwritten. |
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FileInputFormat
A base class for file-based InputFormat . |
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FileOutputFormat
A base class for OutputFormat . |
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FileSplit
A section of an input file. |
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ID
A general identifier, which internally stores the id as an integer. |
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InputFormat
InputFormat describes the input-specification for a
Map-Reduce job. |
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InputSplit
InputSplit represents the data to be processed by an
individual Mapper . |
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InvalidJobConfException
This exception is thrown when jobconf misses some mendatory attributes or value of some attributes is invalid. |
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JobClient.TaskStatusFilter
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JobConf
A map/reduce job configuration. |
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JobConfigurable
That what may be configured. |
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JobHistory.JobInfo
Helper class for logging or reading back events related to job start, finish or failure. |
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JobHistory.Keys
Job history files contain key="value" pairs, where keys belong to this enum. |
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JobHistory.Listener
Callback interface for reading back log events from JobHistory. |
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JobHistory.RecordTypes
Record types are identifiers for each line of log in history files. |
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JobHistory.Task
Helper class for logging or reading back events related to Task's start, finish or failure. |
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JobHistory.TaskAttempt
Base class for Map and Reduce TaskAttempts. |
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JobHistory.Values
This enum contains some of the values commonly used by history log events. |
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JobID
JobID represents the immutable and unique identifier for the job. |
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JobPriority
Used to describe the priority of the running job. |
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JobProfile
A JobProfile is a MapReduce primitive. |
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JobStatus
Describes the current status of a job. |
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JobTracker
JobTracker is the central location for submitting and tracking MR jobs in a network environment. |
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JobTracker.State
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Mapper
Maps input key/value pairs to a set of intermediate key/value pairs. |
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MapRunnable
Expert: Generic interface for Mapper s. |
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OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
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OutputFormat
OutputFormat describes the output-specification for a
Map-Reduce job. |
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Partitioner
Partitions the key space. |
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RecordReader
RecordReader reads <key, value> pairs from an
InputSplit . |
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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. |
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RunningJob
RunningJob is the user-interface to query for details on a
running Map-Reduce job. |
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SequenceFileInputFilter.Filter
filter interface |
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SequenceFileInputFilter.FilterBase
base class for Filters |
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SequenceFileInputFormat
An InputFormat for SequenceFile s. |
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SequenceFileOutputFormat
An OutputFormat that writes SequenceFile s. |
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TaskAttemptID
TaskAttemptID represents the immutable and unique identifier for a task attempt. |
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TaskCompletionEvent
This is used to track task completion events on job tracker. |
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TaskCompletionEvent.Status
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TaskID
TaskID represents the immutable and unique identifier for a Map or Reduce Task. |
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TaskLog.LogName
The filter for userlogs. |
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TaskReport
A report on the state of a task. |
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TaskTracker.TaskTrackerMetrics
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Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.jobcontrol | |
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JobConf
A map/reduce job configuration. |
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JobID
JobID represents the immutable and unique identifier for the job. |
Classes in org.apache.hadoop.mapred used by org.apache.hadoop.mapred.join | |
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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 | |
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FileInputFormat
A base class for file-based InputFormat . |
|
FileOutputFormat
A base class for OutputFormat . |
|
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. |
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MapRunnable
Expert: Generic interface for Mapper s. |
|
OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
|
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 | |
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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 Mapper s
and Reducer s. |
|
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.pipes | |
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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.streaming | |
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FileInputFormat
A base class for file-based InputFormat . |
|
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 . |
|
JobClient
JobClient is the primary interface for the user-job to interact
with the JobTracker . |
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JobConf
A map/reduce job configuration. |
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JobConfigurable
That what may be configured. |
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JobID
JobID represents the immutable and unique identifier for the job. |
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KeyValueTextInputFormat
An InputFormat for plain text files. |
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LineRecordReader.LineReader
A class that provides a line reader from an input stream. |
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Mapper
Maps input key/value pairs to a set of intermediate key/value pairs. |
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OutputCollector
Collects the <key, value> pairs output by Mapper s
and Reducer s. |
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RecordReader
RecordReader reads <key, value> pairs from an
InputSplit . |
|
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. |
Classes in org.apache.hadoop.mapred used by org.apache.hadoop.util | |
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JobConf
A map/reduce job configuration. |
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