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

Package Hierarchies:
  All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.hadoop.io.AbstractMapWritable (implements org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable)
    - org.apache.hadoop.io.MapWritable (implements java.util.Map<K,V>)
    - org.apache.hadoop.io.SortedMapWritable (implements java.util.SortedMap<K,V>)
  - org.apache.hadoop.io.ArrayWritable (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.io.BinaryComparable (implements java.lang.Comparable<T>)
    - org.apache.hadoop.io.BytesWritable (implements org.apache.hadoop.io.WritableComparable<T>)
    - org.apache.hadoop.io.Text (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.BloomMapFile
  - org.apache.hadoop.io.BooleanWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.ByteWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.CompressedWritable (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.io.DefaultStringifier<T> (implements org.apache.hadoop.io.Stringifier<T>)
  - org.apache.hadoop.io.DoubleWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.FloatWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.GenericWritable (implements org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable)
  - 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.io.InputBuffer
  - org.apache.hadoop.io.IntWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.IOUtils
  - org.apache.hadoop.io.LongWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.MapFile
    - org.apache.hadoop.io.ArrayFile
    - org.apache.hadoop.io.SetFile
  - org.apache.hadoop.io.MapFile.Reader (implements java.io.Closeable)
    - org.apache.hadoop.io.ArrayFile.Reader
    - org.apache.hadoop.io.BloomMapFile.Reader
    - org.apache.hadoop.io.SetFile.Reader
  - org.apache.hadoop.io.MapFile.Writer (implements java.io.Closeable)
    - org.apache.hadoop.io.ArrayFile.Writer
    - org.apache.hadoop.io.BloomMapFile.Writer
    - org.apache.hadoop.io.SetFile.Writer
  - org.apache.hadoop.io.MD5Hash (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.NullWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.ObjectWritable (implements org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable)
  - java.io.OutputStream (implements java.io.Closeable, java.io.Flushable)
    - java.io.FilterOutputStream
      - java.io.DataOutputStream (implements java.io.DataOutput)
        - org.apache.hadoop.io.DataOutputBuffer
      - org.apache.hadoop.io.OutputBuffer
    - org.apache.hadoop.io.IOUtils.NullOutputStream
  - org.apache.hadoop.io.SecureIOUtils
  - org.apache.hadoop.io.SequenceFile
  - org.apache.hadoop.io.SequenceFile.Metadata (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.io.SequenceFile.Reader (implements java.io.Closeable)
  - org.apache.hadoop.io.SequenceFile.Sorter
  - org.apache.hadoop.io.SequenceFile.Sorter.SegmentDescriptor (implements java.lang.Comparable<T>)
  - org.apache.hadoop.io.SequenceFile.Writer (implements java.io.Closeable)
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.io.IOException
        - org.apache.hadoop.io.MultipleIOException
        - org.apache.hadoop.io.SecureIOUtils.AlreadyExistsException
        - org.apache.hadoop.io.VersionMismatchException
  - org.apache.hadoop.io.TwoDArrayWritable (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.io.UTF8 (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.VersionedWritable (implements org.apache.hadoop.io.Writable)
  - org.apache.hadoop.io.VIntWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.VLongWritable (implements org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.hadoop.io.WritableComparator (implements org.apache.hadoop.io.RawComparator<T>)
    - org.apache.hadoop.io.BooleanWritable.Comparator
    - org.apache.hadoop.io.BytesWritable.Comparator
    - org.apache.hadoop.io.ByteWritable.Comparator
    - org.apache.hadoop.io.DoubleWritable.Comparator
    - org.apache.hadoop.io.FloatWritable.Comparator
    - org.apache.hadoop.io.IntWritable.Comparator
    - org.apache.hadoop.io.LongWritable.Comparator
      - org.apache.hadoop.io.LongWritable.DecreasingComparator
    - org.apache.hadoop.io.MD5Hash.Comparator
    - org.apache.hadoop.io.NullWritable.Comparator
    - org.apache.hadoop.io.Text.Comparator
    - org.apache.hadoop.io.UTF8.Comparator
  - org.apache.hadoop.io.WritableFactories
  - org.apache.hadoop.io.WritableName
  - org.apache.hadoop.io.WritableUtils

## Interface Hierarchy

- java.io.Closeable
  - org.apache.hadoop.io.Closeable
  - org.apache.hadoop.io.Stringifier<T>
- java.lang.Comparable<T>
  - org.apache.hadoop.io.WritableComparable<T> (also extends org.apache.hadoop.io.Writable)
- java.util.Comparator<T>
  - org.apache.hadoop.io.RawComparator<T>
- org.apache.hadoop.io.SequenceFile.Sorter.RawKeyValueIterator
- org.apache.hadoop.io.SequenceFile.ValueBytes
- org.apache.hadoop.io.Writable
  - org.apache.hadoop.io.WritableComparable<T> (also extends java.lang.Comparable<T>)
- org.apache.hadoop.io.WritableFactory

## Enum Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)
    - org.apache.hadoop.io.SequenceFile.CompressionType

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Copyright © 2009 The Apache Software Foundation