| Package | Description |
|---|---|
| org.apache.hadoop.conf |
Configuration of system parameters.
|
| org.apache.hadoop.crypto.key.kms | |
| 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.security | |
| org.apache.hadoop.security.authorize | |
| org.apache.hadoop.security.token | |
| org.apache.hadoop.security.token.delegation | |
| org.apache.hadoop.security.token.delegation.web | |
| org.apache.hadoop.util |
Common utilities.
|
| org.apache.hadoop.util.bloom |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Text
This class stores text using standard UTF8 encoding.
|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| ByteBufferPool |
| MD5Hash
A Writable for MD5 hash values.
|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| 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.
|
| ByteBufferPool |
| 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.
|
| Class and Description |
|---|
| BytesWritable
A byte sequence that is usable as a key or value.
|
| Class and Description |
|---|
| RawComparator
A
Comparator that operates directly on byte representations of
objects. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| 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. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| WritableComparable
A
Writable which is also Comparable. |
| Class and Description |
|---|
| Text
This class stores text using standard UTF8 encoding.
|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Text
This class stores text using standard UTF8 encoding.
|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Text
This class stores text using standard UTF8 encoding.
|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
| Class and Description |
|---|
| Writable
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput. |
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