| Package | Description |
|---|---|
| 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 | |
| org.apache.hadoop.tools |
Command-line tools for MapReduce.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
InputSplit
InputSplit represents the data to be processed by an
individual Mapper. |
| RecordReader
The record reader breaks the data into key/value pairs for input to the
Mapper. |
| TaskAttemptContext
The context for task attempts.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
| Counter
A named counter that tracks the progress of a map/reduce job.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
| 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.
|
| 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. |
| 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.
|
| Class and Description |
|---|
| 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.
|
| 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. |
| 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.
|
| Class and Description |
|---|
| Job
The job submitter's view of the Job.
|
| 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. |
| 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.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
| ReduceContext
The context passed to the
Reducer. |
| Reducer
Reduces a set of intermediate values which share a key to a smaller set of
values.
|
| Class and Description |
|---|
| JobContext
A read-only view of the job that is provided to the tasks while they
are running.
|
| Class and Description |
|---|
| 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.
|
| Class and Description |
|---|
| Job
The job submitter's view of the Job.
|
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