| 程序包 | 说明 |
|---|---|
| org.apache.hadoop.conf |
Configuration of system parameters.
|
| org.apache.hadoop.contrib.index.lucene | |
| org.apache.hadoop.contrib.index.mapred | |
| org.apache.hadoop.examples.terasort |
This package consists of 3 map/reduce applications for Hadoop to
compete in the annual terabyte sort
competition.
|
| org.apache.hadoop.filecache | |
| org.apache.hadoop.fs |
An abstract file system API.
|
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.kfs |
A client for the Kosmos filesystem (KFS)
Introduction
This pages describes how to use Kosmos Filesystem
( KFS ) as a backing
store with Hadoop.
|
| org.apache.hadoop.fs.permission | |
| org.apache.hadoop.fs.s3 |
A distributed, block-based implementation of
FileSystem that uses Amazon S3
as a backing store. |
| org.apache.hadoop.fs.s3native |
A distributed implementation of
FileSystem for reading and writing files on
Amazon S3. |
| org.apache.hadoop.fs.shell | |
| org.apache.hadoop.hdfs |
A distributed implementation of
FileSystem. |
| org.apache.hadoop.hdfs.protocol | |
| org.apache.hadoop.hdfs.security.token.delegation | |
| org.apache.hadoop.hdfs.server.namenode | |
| org.apache.hadoop.hdfs.tools | |
| org.apache.hadoop.hdfs.web | |
| org.apache.hadoop.hdfs.web.resources | |
| 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.compress | |
| org.apache.hadoop.io.file.tfile | |
| org.apache.hadoop.mapred |
A software framework for easily writing applications which process vast
amounts of data (multi-terabyte data-sets) parallelly on large clusters
(thousands of nodes) built of commodity hardware in a reliable, fault-tolerant
manner.
|
| org.apache.hadoop.mapred.join |
Given a set of sorted datasets keyed with the same class and yielding equal
partitions, it is possible to effect a join of those datasets prior to the map.
|
| org.apache.hadoop.mapred.lib |
Library of generally useful mappers, reducers, and partitioners.
|
| org.apache.hadoop.mapred.lib.db |
org.apache.hadoop.mapred.lib.db Package
This package contains a library to read records from a database as an
input to a mapreduce job, and write the output records to the database.
|
| org.apache.hadoop.mapreduce | |
| org.apache.hadoop.mapreduce.lib.input | |
| org.apache.hadoop.mapreduce.lib.output | |
| org.apache.hadoop.mapreduce.security | |
| org.apache.hadoop.mapreduce.server.tasktracker | |
| org.apache.hadoop.mapreduce.split | |
| org.apache.hadoop.security | |
| org.apache.hadoop.streaming |
Hadoop Streaming is a utility which allows users to create and run
Map-Reduce jobs with any executables (e.g.
|
| org.apache.hadoop.tools | |
| org.apache.hadoop.tools.distcp2 | |
| org.apache.hadoop.tools.distcp2.mapred | |
| org.apache.hadoop.tools.distcp2.util | |
| org.apache.hadoop.tools.rumen |
Rumen is a data extraction and analysis tool built for
Apache Hadoop.
|
| org.apache.hadoop.util |
Common utilities.
|
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| BlockLocation |
| ChecksumFileSystem
Abstract Checksumed FileSystem.
|
| ContentSummary
Store the summary of a content (a directory or a file).
|
| FileChecksum
An abstract class representing file checksums for files.
|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FileSystem.Statistics |
| FilterFileSystem
A
FilterFileSystem contains
some other file system, which it uses as
its basic file system, possibly transforming
the data along the way or providing additional
functionality. |
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| FSInputStream
FSInputStream is a generic old InputStream with a little bit
of RAF-style seek ability.
|
| HardLink.LinkStats
HardLink statistics counters and methods.
|
| HardLink.OSType |
| HasFileDescriptor
Having a FileDescriptor
|
| LocalFileSystem
Implement the FileSystem API for the checksumed local filesystem.
|
| MD5MD5CRC32FileChecksum
MD5 of MD5 of CRC32.
|
| Path
Names a file or directory in a
FileSystem. |
| PathFilter |
| PositionedReadable
Stream that permits positional reading.
|
| Seekable
Stream that permits seeking.
|
| Syncable
This interface declare the sync() operation.
|
| Trash
Provides a trash feature.
|
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FileSystem.Statistics |
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| FSInputStream
FSInputStream is a generic old InputStream with a little bit
of RAF-style seek ability.
|
| Path
Names a file or directory in a
FileSystem. |
| PositionedReadable
Stream that permits positional reading.
|
| Seekable
Stream that permits seeking.
|
| 类和说明 |
|---|
| BlockLocation |
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| BlockLocation |
| ChecksumFileSystem
Abstract Checksumed FileSystem.
|
| CommonConfigurationKeys
This class contains constants for configuration keys used
in the common code.
|
| ContentSummary
Store the summary of a content (a directory or a file).
|
| FileChecksum
An abstract class representing file checksums for files.
|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FileSystem.Statistics |
| FilterFileSystem
A
FilterFileSystem contains
some other file system, which it uses as
its basic file system, possibly transforming
the data along the way or providing additional
functionality. |
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| FSInputChecker
This is a generic input stream for verifying checksums for
data before it is read by a user.
|
| FSInputStream
FSInputStream is a generic old InputStream with a little bit
of RAF-style seek ability.
|
| HasFileDescriptor
Having a FileDescriptor
|
| MD5MD5CRC32FileChecksum
MD5 of MD5 of CRC32.
|
| Path
Names a file or directory in a
FileSystem. |
| PositionedReadable
Stream that permits positional reading.
|
| Seekable
Stream that permits seeking.
|
| 类和说明 |
|---|
| ContentSummary
Store the summary of a content (a directory or a file).
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| 类和说明 |
|---|
| ContentSummary
Store the summary of a content (a directory or a file).
|
| 类和说明 |
|---|
| FsShell
Provide command line access to a FileSystem.
|
| 类和说明 |
|---|
| BlockLocation |
| ContentSummary
Store the summary of a content (a directory or a file).
|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| MD5MD5CRC32FileChecksum
MD5 of MD5 of CRC32.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| Seekable
Stream that permits seeking.
|
| 类和说明 |
|---|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream
Utility that wraps a
OutputStream in a DataOutputStream,
buffers output through a BufferedOutputStream and creates a checksum
file. |
| 类和说明 |
|---|
| BlockLocation |
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FileSystem.Statistics |
| LocalDirAllocator
An implementation of a round-robin scheme for disk allocation for creating
files.
|
| Path
Names a file or directory in a
FileSystem. |
| PathFilter |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| PathFilter |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| BlockLocation |
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| FSDataInputStream
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| FileStatus
Interface that represents the client side information for a file.
|
| FileSystem
An abstract base class for a fairly generic filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| Path
Names a file or directory in a
FileSystem. |
| 类和说明 |
|---|
| LocalFileSystem
Implement the FileSystem API for the checksumed local filesystem.
|
| Path
Names a file or directory in a
FileSystem. |
Copyright © 2009 The Apache Software Foundation