Hierarchy For All Packages

Package Hierarchies:

• org.apache.hadoop.mapred,
• org.apache.hadoop.mapreduce.task.reduce

Class Hierarchy

• java.lang.Object
  • org.apache.hadoop.service.AbstractService (implements org.apache.hadoop.service.Service)
    • org.apache.hadoop.yarn.server.api.AuxiliaryService
      • org.apache.hadoop.mapred.LocalVolumeAuxService
  • org.apache.hadoop.mapreduce.task.reduce.DirectShuffle<K,V> (implements org.apache.hadoop.mapreduce.task.reduce.ExceptionReporter, org.apache.hadoop.mapred.ShuffleConsumerPlugin<K,V>)
  • org.apache.hadoop.mapreduce.task.reduce.DirectShuffleMergeManagerImpl<K,V> (implements org.apache.hadoop.mapreduce.task.reduce.MergeManager<K,V>)
  • org.apache.hadoop.mapreduce.task.reduce.DirectShuffleSchedulerImpl<K,V> (implements org.apache.hadoop.mapreduce.task.reduce.ShuffleScheduler<K,V>)
  • org.apache.hadoop.mapred.IFile.Reader<K,V>
    • org.apache.hadoop.mapreduce.task.reduce.DirectInMemoryReader<K,V>
  • java.io.InputStream (implements java.io.Closeable)
    • java.io.FilterInputStream
      • java.io.DataInputStream (implements java.io.DataInput)
        • org.apache.hadoop.io.DataInputBuffer
          • org.apache.hadoop.mapred.MapRFsOutputBuffer.InMemValBytes
    • org.apache.hadoop.mapred.IFileInputStream
      • org.apache.hadoop.mapred.MapRIFileInputStream
  • org.apache.hadoop.mapreduce.task.reduce.MapOutput<K,V>
    • org.apache.hadoop.mapreduce.task.reduce.DirectInMemoryOutput<K,V>
    • org.apache.hadoop.mapreduce.task.reduce.DirectOnDiskMapOutput<K,V>
  • org.apache.hadoop.mapred.MapOutputFile (implements org.apache.hadoop.conf.Configurable)
    • org.apache.hadoop.mapred.MapRFsOutputFile
  • org.apache.hadoop.mapred.MapOutputFileInfo
  • org.apache.hadoop.mapreduce.task.reduce.MapOutputLocation
  • org.apache.hadoop.mapred.MapRDirectShuffleMetaData (implements org.apache.hadoop.mapred.DirectShuffleMetaData)
  • org.apache.hadoop.mapred.MapRFsOutputBuffer<K,V> (implements org.apache.hadoop.util.IndexedSortable, org.apache.hadoop.mapred.MapOutputCollector<K,V>)
  • java.io.OutputStream (implements java.io.Closeable, java.io.Flushable)
    • java.io.FilterOutputStream
      • java.io.DataOutputStream (implements java.io.DataOutput)
        • org.apache.hadoop.mapred.MapRFsOutputBuffer.BlockingBuffer
      • org.apache.hadoop.mapred.IFileOutputStream
        • org.apache.hadoop.mapred.MapRIFileOutputStream
    • org.apache.hadoop.mapred.MapRFsOutputBuffer.Buffer
  • java.lang.Thread (implements java.lang.Runnable)
    • org.apache.hadoop.mapreduce.task.reduce.DirectShuffleEventFetcher<K,V>
    • org.apache.hadoop.mapreduce.task.reduce.DirectShuffleFetcher<K,V>

Interface Hierarchy

• org.apache.hadoop.io.Writable
  • org.apache.hadoop.mapred.DirectShuffleMetaData