Uses of Package
org.apache.hadoop.io

Packages that use org.apache.hadoop.io

org.apache.hadoop.conf	Configuration of system parameters.
org.apache.hadoop.fs	An abstract file system API.
org.apache.hadoop.fs.permission
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.io.file.tfile
org.apache.hadoop.io.serializer	This package provides a mechanism for using different serialization frameworks in Hadoop.
org.apache.hadoop.ipc	Tools to help define network clients and servers.
org.apache.hadoop.record	(DEPRECATED) Hadoop record I/O contains classes and a record description language translator for simplifying serialization and deserialization of records in a language-neutral manner.
org.apache.hadoop.record.meta
org.apache.hadoop.util	Common utilities.
org.apache.hadoop.util.bloom

Classes in org.apache.hadoop.io used by org.apache.hadoop.conf

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

Classes in org.apache.hadoop.io used by org.apache.hadoop.fs

MD5Hash
A Writable for MD5 hash values.

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

Classes in org.apache.hadoop.io used by org.apache.hadoop.fs.permission

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

Classes in org.apache.hadoop.io used by org.apache.hadoop.io

AbstractMapWritable
Abstract base class for MapWritable and SortedMapWritable Unlike org.apache.nutch.crawl.MapWritable, this class allows creation of MapWritable<Writable, MapWritable> so the CLASS_TO_ID and ID_TO_CLASS maps travel with the class instead of being static.

BinaryComparable
Interface supported by WritableComparable types supporting ordering/permutation by a representative set of bytes.

BooleanWritable
A WritableComparable for booleans.

BytesWritable
A byte sequence that is usable as a key or value.

ByteWritable
A WritableComparable for a single byte.

DoubleWritable
Writable for Double values.

FloatWritable
A WritableComparable for floats.

IntWritable
A WritableComparable for ints.

LongWritable
A WritableComparable for longs.

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.Reader.Option

MapFile.Writer
Writes a new map.

MapFile.Writer.Option

MapWritable
A Writable 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.

RawComparator
A Comparator that operates directly on byte representations of objects.

SequenceFile.CompressionType
The compression type used to compress key/value pairs in the SequenceFile.

SequenceFile.Metadata
The class encapsulating with the metadata of a file.

SequenceFile.Reader
Reads key/value pairs from a sequence-format file.

SequenceFile.Reader.Option
A tag interface for all of the Reader options

SequenceFile.Sorter.RawKeyValueIterator
The interface to iterate over raw keys/values of SequenceFiles.

SequenceFile.Sorter.SegmentDescriptor
This class defines a merge segment.

SequenceFile.ValueBytes
The interface to 'raw' values of SequenceFiles.

SequenceFile.Writer
Write key/value pairs to a sequence-format file.

SequenceFile.Writer.Option

ShortWritable
A WritableComparable for shorts.

SortedMapWritable
A Writable SortedMap.

Stringifier
Stringifier interface offers two methods to convert an object to a string representation and restore the object given its string representation.

Text
This class stores text using standard UTF8 encoding.

VIntWritable
A WritableComparable for integer values stored in variable-length format.

VLongWritable
A WritableComparable for longs in a variable-length format.

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

WritableComparable
A Writable which is also 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.io.file.tfile

BytesWritable
A byte sequence that is usable as a key or value.

Classes in org.apache.hadoop.io used by org.apache.hadoop.io.serializer

RawComparator
A Comparator that operates directly on byte representations of objects.

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

Classes in org.apache.hadoop.io used by org.apache.hadoop.ipc

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

Classes in org.apache.hadoop.io used by org.apache.hadoop.record

RawComparator
A Comparator that operates directly on byte representations of objects.

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

WritableComparable
A Writable which is also Comparable.

WritableComparator
A Comparator for WritableComparables.

Classes in org.apache.hadoop.io used by org.apache.hadoop.record.meta

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

WritableComparable
A Writable which is also Comparable.

Classes in org.apache.hadoop.io used by org.apache.hadoop.util

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.

Classes in org.apache.hadoop.io used by org.apache.hadoop.util.bloom

Writable
A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.