程序包org.apache.hadoop.io的分层结构

程序包分层结构:

• 所有程序包

类分层结构

• 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.ReadaheadPool
  • 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

接口分层结构

• java.lang.AutoCloseable
  • java.io.Closeable
    • org.apache.hadoop.io.Closeable
    • org.apache.hadoop.io.Stringifier<T>
• java.lang.Comparable<T>
  • org.apache.hadoop.io.WritableComparable<T> (并 extends org.apache.hadoop.io.Writable)
• java.util.Comparator<T>
  • org.apache.hadoop.io.RawComparator<T>
• org.apache.hadoop.io.ReadaheadPool.ReadaheadRequest
• org.apache.hadoop.io.SequenceFile.Sorter.RawKeyValueIterator
• org.apache.hadoop.io.SequenceFile.ValueBytes
• org.apache.hadoop.io.Writable
  • org.apache.hadoop.io.WritableComparable<T> (并 extends java.lang.Comparable<T>)
• org.apache.hadoop.io.WritableFactory

枚举分层结构

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