Uses of Package
org.apache.hadoop.io

Packages that use org.apache.hadoop.io
org.apache.hadoop.examples Hadoop example code. 
org.apache.hadoop.io Generic i/o code for use when reading and writing data to the network, to databases, and to files. 
org.apache.hadoop.ipc Tools to help define network clients and servers. 
org.apache.hadoop.mapred A system for scalable, fault-tolerant, distributed computation over large data collections. 
org.apache.hadoop.mapred.lib Library of generally useful mappers, reducers, and partitioners. 
 

Classes in org.apache.hadoop.io used by org.apache.hadoop.examples
Closeable
          That which can be closed.
Writable
          A simple, efficient, serialization protocol, based on DataInput and DataOutput.
WritableComparable
          An interface which extends both Writable and Comparable.
 

Classes in org.apache.hadoop.io used by org.apache.hadoop.io
DataOutputBuffer
          A reusable DataOutput implementation that writes to an in-memory buffer.
LongWritable.Comparator
          A Comparator optimized for LongWritable.
MapFile
          A file-based map from keys to values.
MapFile.Reader
          Provide access to an existing map.
MapFile.Writer
          Writes a new map.
MD5Hash
          A Writable for MD5 hash values.
NullWritable
          Singleton Writable with no data.
ObjectWritable
          A polymorphic Writable that writes an instance with it's class name.
UTF8
          A WritableComparable for strings that uses the UTF8 encoding.
Writable
          A simple, efficient, serialization protocol, based on DataInput and DataOutput.
WritableComparable
          An interface which extends both Writable and Comparable.
WritableComparator
          A Comparator for WritableComparables.
WritableFactory
          A factory for a class of Writable.
 

Classes in org.apache.hadoop.io used by org.apache.hadoop.ipc
Writable
          A simple, efficient, serialization protocol, based on DataInput and DataOutput.
 

Classes in org.apache.hadoop.io used by org.apache.hadoop.mapred
Closeable
          That which can be closed.
IntWritable
          A WritableComparable for ints.
MapFile.Reader
          Provide access to an existing map.
SequenceFile.Reader
          Writes key/value pairs from a sequence-format file.
Writable
          A simple, efficient, serialization protocol, based on DataInput and DataOutput.
WritableComparable
          An interface which extends both Writable and Comparable.
WritableComparator
          A Comparator for WritableComparables.
 

Classes in org.apache.hadoop.io used by org.apache.hadoop.mapred.lib
Closeable
          That which can be closed.
Writable
          A simple, efficient, serialization protocol, based on DataInput and DataOutput.
WritableComparable
          An interface which extends both Writable and Comparable.
 



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