Package org.apache.hadoop.fs

An abstract file system API.

See:
Description

Interface Summary

PathFilter
PositionedReadable	Stream that permits positional reading.
Seekable	Stream that permits seeking.
Syncable	This interface declare the sync() operation.

Class Summary

BlockLocation
BufferedFSInputStream	A class optimizes reading from FSInputStream by bufferring
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).
DF	Filesystem disk space usage statistics.
DU	Filesystem disk space usage statistics.
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
FileUtil	A collection of file-processing util methods
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.
FSOutputSummer	This is a generic output stream for generating checksums for data before it is written to the underlying stream
FsShell	Provide command line access to a FileSystem.
FsUrlStreamHandlerFactory	Factory for URL stream handlers.
GlobPattern	A class for POSIX glob pattern with brace expansions.
HardLink	Class for creating hardlinks.
HardLink.LinkStats	HardLink statistics counters and methods.
HarFileSystem	This is an implementation of the Hadoop Archive Filesystem.
InMemoryFileSystem	Deprecated.
LocalDirAllocator	An implementation of a round-robin scheme for disk allocation for creating files.
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.
RawLocalFileSystem	Implement the FileSystem API for the raw local filesystem.
Trash	Provides a trash feature.

Enum Summary

HardLink.OSType

Exception Summary

ChecksumException	Thrown for checksum errors.
FileAlreadyExistsException	Used when target file already exists for any operation and is not configured to be overwritten.

Error Summary

FSError

Thrown for unexpected filesystem errors, presumed to reflect disk errors in the native filesystem.

Package org.apache.hadoop.fs Description

An abstract file system API.