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## Hierarchy For Package org.apache.hadoop.mapred

Package Hierarchies:
  All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.log4j.AppenderSkeleton (implements org.apache.log4j.Appender, org.apache.log4j.spi.OptionHandler)
    - org.apache.log4j.WriterAppender
      - org.apache.log4j.FileAppender
        - org.apache.hadoop.mapred.TaskLogAppender
  - org.apache.hadoop.mapred.ClusterStatus (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.lib.CombineFileSplit (implements org.apache.hadoop.mapred.InputSplit)
    - org.apache.hadoop.mapred.MultiFileSplit
  - org.apache.hadoop.conf.Configuration (implements java.lang.Iterable<T>, org.apache.hadoop.io.Writable)
    - org.apache.hadoop.mapred.JobConf
  - org.apache.hadoop.conf.Configured (implements org.apache.hadoop.conf.Configurable)
    - org.apache.hadoop.mapred.JobClient (implements org.apache.hadoop.util.Tool)
  - org.apache.hadoop.mapreduce.Counter (implements org.apache.hadoop.io.Writable)
    - org.apache.hadoop.mapred.Counters.Counter
  - org.apache.hadoop.mapred.Counters (implements java.lang.Iterable<T>, org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.Counters.Group (implements java.lang.Iterable<T>, org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.DefaultJobHistoryParser
  - org.apache.hadoop.mapred.FileInputFormat<K,V> (implements org.apache.hadoop.mapred.InputFormat<K,V>)
    - org.apache.hadoop.mapred.KeyValueTextInputFormat (implements org.apache.hadoop.mapred.JobConfigurable)
    - org.apache.hadoop.mapred.MultiFileInputFormat<K,V>
    - org.apache.hadoop.mapred.SequenceFileInputFormat<K,V>
      - org.apache.hadoop.mapred.SequenceFileAsBinaryInputFormat
      - org.apache.hadoop.mapred.SequenceFileAsTextInputFormat
      - org.apache.hadoop.mapred.SequenceFileInputFilter<K,V>
    - org.apache.hadoop.mapred.TextInputFormat (implements org.apache.hadoop.mapred.JobConfigurable)
  - org.apache.hadoop.mapred.FileOutputFormat<K,V> (implements org.apache.hadoop.mapred.OutputFormat<K,V>)
    - org.apache.hadoop.mapred.MapFileOutputFormat
    - org.apache.hadoop.mapred.SequenceFileOutputFormat<K,V>
      - org.apache.hadoop.mapred.SequenceFileAsBinaryOutputFormat
    - org.apache.hadoop.mapred.TextOutputFormat<K,V>
  - javax.servlet.GenericServlet (implements java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig)
    - javax.servlet.http.HttpServlet (implements java.io.Serializable)
      - org.apache.hadoop.mapred.RawHistoryFileServlet
      - org.apache.hadoop.mapred.TaskGraphServlet
      - org.apache.hadoop.mapred.TaskLogServlet
      - org.apache.hadoop.mapred.TaskTracker.MapOutputServlet
  - org.apache.hadoop.mapreduce.ID (implements org.apache.hadoop.io.WritableComparable<T>)
    - org.apache.hadoop.mapred.ID
      - org.apache.hadoop.mapreduce.JobID (implements java.lang.Comparable<T>)
        - org.apache.hadoop.mapred.JobID
      - org.apache.hadoop.mapreduce.TaskAttemptID
        - org.apache.hadoop.mapred.TaskAttemptID
      - org.apache.hadoop.mapreduce.TaskID
        - org.apache.hadoop.mapred.TaskID
  - org.apache.hadoop.mapreduce.InputSplit
    - org.apache.hadoop.mapred.FileSplit (implements org.apache.hadoop.mapred.InputSplit)
  - org.apache.hadoop.mapred.IsolationRunner
  - org.apache.hadoop.mapreduce.JobContext
    - org.apache.hadoop.mapred.JobContext
    - org.apache.hadoop.mapreduce.TaskAttemptContext (implements org.apache.hadoop.util.Progressable)
      - org.apache.hadoop.mapred.TaskAttemptContext
  - org.apache.hadoop.mapred.JobEndNotifier
  - org.apache.hadoop.mapred.JobHistory
  - org.apache.hadoop.mapred.JobHistory.HistoryCleaner (implements java.lang.Runnable)
  - org.apache.hadoop.mapred.JobHistory.JobInfo
  - org.apache.hadoop.mapred.JobHistory.Task
    - org.apache.hadoop.mapred.JobHistory.TaskAttempt
      - org.apache.hadoop.mapred.JobHistory.MapAttempt
      - org.apache.hadoop.mapred.JobHistory.ReduceAttempt
  - org.apache.hadoop.mapred.JobHistoryServer
  - org.apache.hadoop.mapred.JobInProgress
  - org.apache.hadoop.mapred.JobLocalizer
  - org.apache.hadoop.mapred.JobProfile (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.JobQueueInfo (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.JobStatus (implements java.lang.Cloneable, org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.JobTracker (implements org.apache.hadoop.mapred.AdminOperationsProtocol, org.apache.hadoop.mapred.JobTrackerMXBean, org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol, org.apache.hadoop.security.RefreshUserMappingsProtocol)
  - org.apache.hadoop.mapred.JvmTask (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.KeyValueLineRecordReader (implements org.apache.hadoop.mapred.RecordReader<K,V>)
  - org.apache.hadoop.util.LineReader
    - org.apache.hadoop.mapred.LineRecordReader.LineReader
  - org.apache.hadoop.mapred.LineRecordReader (implements org.apache.hadoop.mapred.RecordReader<K,V>)
  - org.apache.hadoop.mapred.MapReduceBase (implements org.apache.hadoop.io.Closeable, org.apache.hadoop.mapred.JobConfigurable)
  - org.apache.hadoop.mapred.MapRunner<K1,V1,K2,V2> (implements org.apache.hadoop.mapred.MapRunnable<K1,V1,K2,V2>)
  - org.apache.hadoop.mapred.MapTaskCompletionEventsUpdate (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapreduce.OutputCommitter
    - org.apache.hadoop.mapred.OutputCommitter
      - org.apache.hadoop.mapred.FileOutputCommitter
  - org.apache.hadoop.mapred.OutputLogFilter (implements org.apache.hadoop.fs.PathFilter)
  - org.apache.hadoop.security.authorize.PolicyProvider
    - org.apache.hadoop.mapred.MapReducePolicyProvider
  - org.apache.hadoop.mapred.QueueAclsInfo (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader (implements org.apache.hadoop.mapred.RecordReader<K,V>)
  - org.apache.hadoop.mapred.SequenceFileAsBinaryOutputFormat.WritableValueBytes (implements org.apache.hadoop.io.SequenceFile.ValueBytes)
  - org.apache.hadoop.mapred.SequenceFileAsTextRecordReader (implements org.apache.hadoop.mapred.RecordReader<K,V>)
  - org.apache.hadoop.mapred.SequenceFileInputFilter.FilterBase (implements org.apache.hadoop.mapred.SequenceFileInputFilter.Filter)
    - org.apache.hadoop.mapred.SequenceFileInputFilter.MD5Filter
    - org.apache.hadoop.mapred.SequenceFileInputFilter.PercentFilter
    - org.apache.hadoop.mapred.SequenceFileInputFilter.RegexFilter
  - org.apache.hadoop.mapred.SequenceFileRecordReader<K,V> (implements org.apache.hadoop.mapred.RecordReader<K,V>)
  - org.apache.hadoop.mapred.SkipBadRecords
  - org.apache.hadoop.mapreduce.StatusReporter
    - org.apache.hadoop.mapred.Task.TaskReporter (implements org.apache.hadoop.mapred.Reporter, java.lang.Runnable)
  - org.apache.hadoop.mapred.Task (implements org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.Task.CombineOutputCollector<K,V> (implements org.apache.hadoop.mapred.OutputCollector<K,V>)
  - org.apache.hadoop.mapred.Task.CombinerRunner<K,V>
    - org.apache.hadoop.mapred.Task.NewCombinerRunner<K,V>
    - org.apache.hadoop.mapred.Task.OldCombinerRunner<K,V>
  - org.apache.hadoop.mapred.Task.CombineValuesIterator<KEY,VALUE>
  - org.apache.hadoop.mapred.TaskCompletionEvent (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.TaskController (implements org.apache.hadoop.conf.Configurable)
    - org.apache.hadoop.mapred.DefaultTaskController
  - org.apache.hadoop.mapred.TaskLog
  - org.apache.hadoop.mapred.TaskLogsTruncater
  - org.apache.hadoop.mapred.TaskReport (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.TaskStatus (implements java.lang.Cloneable, org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.TaskTracker (implements java.lang.Runnable, org.apache.hadoop.mapred.TaskTrackerMXBean, org.apache.hadoop.mapred.TaskUmbilicalProtocol)
  - org.apache.hadoop.mapred.TaskTrackerMetricsSource (implements org.apache.hadoop.metrics2.MetricsSource)
  - org.apache.hadoop.mapred.TaskTrackerStatus (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.mapred.TextOutputFormat.LineRecordWriter<K,V> (implements org.apache.hadoop.mapred.RecordWriter<K,V>)
  - java.lang.Thread (implements java.lang.Runnable)
    - org.apache.hadoop.mapred.UserLogCleaner
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.io.IOException
        - org.apache.hadoop.mapred.FileAlreadyExistsException
        - org.apache.hadoop.mapred.InvalidFileTypeException
        - org.apache.hadoop.mapred.InvalidInputException
        - org.apache.hadoop.mapred.InvalidJobConfException
        - org.apache.hadoop.mapred.JobTracker.IllegalStateException
      - java.lang.RuntimeException
        - org.apache.hadoop.mapred.Counters.CountersExceededException
  - org.apache.hadoop.security.token.TokenRenewer
    - org.apache.hadoop.mapred.JobClient.Renewer
  - org.apache.hadoop.mapred.Utils
  - org.apache.hadoop.mapred.Utils.OutputFileUtils
  - org.apache.hadoop.mapred.Utils.OutputFileUtils.OutputLogFilter (implements org.apache.hadoop.fs.PathFilter)
    - org.apache.hadoop.mapred.Utils.OutputFileUtils.OutputFilesFilter

## Interface Hierarchy

- java.io.Closeable
  - org.apache.hadoop.io.Closeable
    - org.apache.hadoop.mapred.Mapper<K1,V1,K2,V2> (also extends org.apache.hadoop.mapred.JobConfigurable)
    - org.apache.hadoop.mapred.Reducer<K2,V2,K3,V3> (also extends org.apache.hadoop.mapred.JobConfigurable)
- org.apache.hadoop.conf.Configurable
  - org.apache.hadoop.mapred.SequenceFileInputFilter.Filter
- org.apache.hadoop.mapred.InputFormat<K,V>
- org.apache.hadoop.mapred.JobConfigurable
  - org.apache.hadoop.mapred.Mapper<K1,V1,K2,V2> (also extends org.apache.hadoop.io.Closeable)
  - org.apache.hadoop.mapred.MapRunnable<K1,V1,K2,V2>
  - org.apache.hadoop.mapred.Partitioner<K2,V2>
  - org.apache.hadoop.mapred.Reducer<K2,V2,K3,V3> (also extends org.apache.hadoop.io.Closeable)
- org.apache.hadoop.mapred.JobHistory.Listener
- org.apache.hadoop.mapred.JobTrackerMXBean
- org.apache.hadoop.mapred.OutputCollector<K,V>
- org.apache.hadoop.mapred.OutputFormat<K,V>
- org.apache.hadoop.util.Progressable
  - org.apache.hadoop.mapred.Reporter
- org.apache.hadoop.mapred.RawKeyValueIterator
- org.apache.hadoop.mapred.RecordReader<K,V>
- org.apache.hadoop.mapred.RecordWriter<K,V>
- org.apache.hadoop.mapred.RunningJob
- org.apache.hadoop.mapred.TaskTrackerMXBean
- org.apache.hadoop.ipc.VersionedProtocol
  - org.apache.hadoop.mapred.AdminOperationsProtocol
  - org.apache.hadoop.mapred.TaskUmbilicalProtocol
- org.apache.hadoop.io.Writable
  - org.apache.hadoop.mapred.InputSplit

## Enum Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)
    - org.apache.hadoop.mapred.JobTracker.State
    - org.apache.hadoop.mapred.TaskStatus.Phase
    - org.apache.hadoop.mapred.TaskStatus.State
    - org.apache.hadoop.mapred.JobClient.TaskStatusFilter
    - org.apache.hadoop.mapred.FileOutputFormat.Counter
    - org.apache.hadoop.mapred.TIPStatus
    - org.apache.hadoop.mapred.FileInputFormat.Counter
    - org.apache.hadoop.mapred.JobPriority
    - org.apache.hadoop.mapred.JobHistory.RecordTypes
    - org.apache.hadoop.mapred.JobHistory.Keys
    - org.apache.hadoop.mapred.JobHistory.Values
    - org.apache.hadoop.mapred.TaskLog.LogName
    - org.apache.hadoop.mapred.Task.Counter
    - org.apache.hadoop.mapred.TaskCompletionEvent.Status
    - org.apache.hadoop.mapred.Operation
    - org.apache.hadoop.mapred.JobInProgress.Counter

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Copyright © 2009 The Apache Software Foundation