| Class and Description |
|---|
| 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. |
| InputSplitWithLocationInfo |
| 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 |
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. |
| SplitLocationInfo |
| 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.
|
| Class and Description |
|---|
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.
|
| Class and Description |
|---|
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.
|
| Class and Description |
|---|
| 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 |
| MapRunnable
Expert: Generic interface for
Mappers. |
| OutputCollector |
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.
|
| Class and Description |
|---|
| 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 |
| 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.
|
| Class and Description |
|---|
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.
|
| Class and Description |
|---|
| JobConf
A map/reduce job configuration.
|
| Class and Description |
|---|
| JobConf
A map/reduce job configuration.
|
RunningJob
RunningJob is the user-interface to query for details on a
running Map-Reduce job. |
| Class and Description |
|---|
| ID
A general identifier, which internally stores the id
as an integer.
|
| SplitLocationInfo |
| TaskCompletionEvent
This is used to track task completion events on
job tracker.
|
Copyright © 2024 Apache Software Foundation. All rights reserved.