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Provide command line parsing for JobSubmission job submission looks like hadoop jar -libjars |
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A mapred http server. |
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The servlet that outputs svg graphics for map / reduce task statuses |
Added Classes and Interfaces | |
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Protocol for admin operations. |
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The default implementation for controlling tasks. |
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JobInProgress maintains all the info for keeping a Job on the straight and narrow. |
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JobTrackerPlugins are found in mapred.jobtracker.plugins and are started and stopped by a PluginDispatcher during JobTracker start-up. |
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PolicyProvider for Map-Reduce protocols. |
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A class that represents the communication between the tasktracker and child tasks w.r.t the map task completion events. |
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Generic operation that maps to the dependent set of ACLs that drive the authorization of the operation. |
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RawKeyValueIterator is an iterator used to iterate over the raw keys and values during sort/merge of intermediate data. |
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The states of a TaskInProgress as seen by the JobTracker. |
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Base class for tasks. |
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OutputCollector for the combiner. |
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Controls initialization finalization and clean up of tasks and also the launching and killing of task JVMs. |
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This is used for initializing the private localized files in distributed cache. |
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NOTE: This class is internal only class and not intended for users |
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The servlet that outputs svg graphics for map / reduce task statuses |
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TaskInProgress maintains all the info needed for a Task in the lifetime of its owning Job. |
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The class for truncating the user logs. |
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Describes the current status of a task. |
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A TaskTrackerStatus is a MapReduce primitive. |
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Class representing a collection of resources on this tasktracker. |
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Protocol that task child process uses to contact its parent process. |
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This is used only in UserLogManager to manage cleanup of user logs. |
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A utility class. |
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OutputFilesFilter |
This class filters output(part) files from the given directory It does not accept files with filenames _logs and _SUCCESS. |
OutputLogFilter |
This class filters log files from directory given It doesnt accept paths having _logs. |
Changed Classes and Interfaces | |
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Status information on the current state of the Map-Reduce cluster. |
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A set of named counters. |
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A counter record comprising its name and value. |
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Group of counters comprising of counters from a particular counter Enum class. |
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A base class for file-based InputFormat |
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An OutputCommitter that commits files specified in job output directory i.e. |
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A base class for OutputFormat |
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A section of an input file. |
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A general identifier which internally stores the id as an integer. |
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InputFormat describes the input-specification for a Map-Reduce job. |
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InputSplit represents the data to be processed by an individual Mapper |
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This class wraps a list of problems with the input so that the user can get a list of problems together instead of finding and fixing them one by one. |
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This exception is thrown when jobconf misses some mendatory attributes or value of some attributes is invalid. |
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IsolationRunner is intended to facilitate debugging by re-running a specific task given left-over task files for a (typically failed) past job. |
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JobClient is the primary interface for the user-job to interact with the JobTracker JobClient provides facilities to submit jobs track their progress access component-tasks' reports/logs get the Map-Reduce cluster status information etc. |
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A map/reduce job configuration. |
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@deprecated Use org.apache.hadoop.mapreduce.JobContext instead. |
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Provides methods for writing to and reading from job history. |
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Helper class for logging or reading back events related to job start finish or failure. |
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Job history files contain key="value" pairs where keys belong to this enum. |
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Callback interface for reading back log events from JobHistory. |
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Record types are identifiers for each line of log in history files. |
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Helper class for logging or reading back events related to Task's start finish or failure. |
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This enum contains some of the values commonly used by history log events. |
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JobID represents the immutable and unique identifier for the job. |
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Used to describe the priority of the running job. |
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A JobProfile is a MapReduce primitive. |
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Describes the current status of a job. |
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JobTracker is the central location for submitting and tracking MR jobs in a network environment. |
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This class treats a line in the input as a key/value pair separated by a separator character. |
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An InputFormat for plain text files. |
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Treats keys as offset in file and value as line. |
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An OutputFormat that writes MapFile}s |
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Expert: Generic interface for |
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Default MapRunnable implementation. |
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Maps input key/value pairs to a set of intermediate key/value pairs. |
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An abstract InputFormat that returns i int) method. |
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A sub-collection of input files. |
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Collects the <key value> pairs output by an |
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OutputCommitter describes the commit of task output for a Map-Reduce job. |
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OutputFormat describes the output-specification for a Map-Reduce job. |
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This class filters log files from directory given It doesnt accept paths having _logs. |
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Partitions the key space. |
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RecordReader reads <key value> pairs from an InputSplit |
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RecordWriter writes the output <key value> pairs to an output file. |
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Reduces a set of intermediate values which share a key to a smaller set of values. |
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A facility for Map-Reduce applications to report progress and update counters status information etc. |
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RunningJob is the user-interface to query for details on a running Map-Reduce job. |
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InputFormat reading keys values from SequenceFiles in binary (raw) format. |
SequenceFileAsBinaryRecordReader |
Read records from a SequenceFile as binary (raw) bytes. |
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An OutputFormat that writes keys values to i binary(raw) format |
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This class is similar to SequenceFileInputFormat except it generates SequenceFileAsTextRecordReader which converts the input keys and values to their String forms by calling toString() method. |
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This class converts the input keys and values to their String forms by calling toString() method. |
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A class that allows a map/red job to work on a sample of sequence files. |
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An InputFormat for |
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An OutputFormat that writes |
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An RecordReader for SequenceFile}s |
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@deprecated Use org.apache.hadoop.mapreduce.TaskAttemptContext instead. |
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TaskAttemptID represents the immutable and unique identifier for a task attempt. |
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TaskID represents the immutable and unique identifier for a Map or Reduce Task. |
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A simple logger to handle the task-specific user logs. |
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The filter for userlogs. |
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A simple log4j-appender for the task child's map-reduce system logs. |
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A report on the state of a task. |
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TaskTracker is a process that starts and tracks MR Tasks in a networked environment. |
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An InputFormat for plain text files. |
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An OutputFormat that writes plain text files. |
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