Uses of Package org.apache.hadoop.mapred (Hadoop 0.20.2+320 API)
Date: 2010-06-28

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## 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.mapreduce.server.jobtracker |
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 `Mapper`s and `Reducer`s.
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 `Mapper`s and `Reducer`s.
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 `Mapper`s and `Reducer`s.
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
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 `Mapper`s and `Reducer`s.
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 `Mapper`s and `Reducer`s.
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 `Mapper`s and `Reducer`s.
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.
JobInProgress JobInProgress maintains all the info for keeping a Job on the straight and narrow.
JobInProgress.Counter
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 `Mapper`s and `Reducer`s.
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.
TaskInProgress TaskInProgress maintains all the info needed for a Task in the lifetime of its owning Job.
TaskLog.LogName The filter for userlogs.
TaskReport A report on the state of a task.
TaskStatus Describes the current status of a task.
TaskStatus.Phase
TaskStatus.State
TaskTrackerStatus A TaskTrackerStatus is a MapReduce primitive.
TaskTrackerStatus.ResourceStatus Class representing a collection of resources on this tasktracker.
TIPStatus The states of a `TaskInProgress` as seen by the JobTracker.
Utils.OutputFileUtils.OutputLogFilter This class filters log files from directory given It doesnt accept paths having _logs.

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 `Mapper`s and `Reducer`s.
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 `Mapper`s and `Reducer`s.
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.mapreduce.server.jobtracker
JobInProgress JobInProgress maintains all the info for keeping a Job on the straight and narrow.
JobTracker JobTracker is the central location for submitting and tracking MR jobs in a network environment.

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 `Mapper`s and `Reducer`s.
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.

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