Interface | Description |
---|---|
ByteBufferReadable |
Implementers of this interface provide a read API that writes to a
ByteBuffer, not a byte[].
|
CanSetDropBehind | |
CanSetReadahead | |
DelegationTokenRenewer.Renewable |
The renewable interface used by the renewer.
|
FsConstants |
FileSystem related constants.
|
HasFileDescriptor |
Having a FileDescriptor
|
PathFilter | |
PositionedReadable |
Stream that permits positional reading.
|
RemoteIterator<E> |
An iterator over a collection whose elements need to be fetched remotely
|
Seekable |
Stream that permits seeking.
|
Syncable |
This interface for flush/sync operation.
|
VolumeId |
Opaque interface that identifies a disk location.
|
Class | Description |
---|---|
AbstractFileSystem |
This class provides an interface for implementors of a Hadoop file system
(analogous to the VFS of Unix).
|
AvroFSInput |
Adapts an
FSDataInputStream to Avro's SeekableInput interface. |
BlockLocation |
Represents the network location of a block, information about the hosts
that contain block replicas, and other block metadata (E.g.
|
BlockStorageLocation |
Wrapper for
BlockLocation that also adds VolumeId volume
location information for each replica. |
BufferedFSInputStream |
A class optimizes reading from FSInputStream by bufferring
|
ChecksumFileSystem |
Abstract Checksumed FileSystem.
|
ChecksumFs |
Abstract Checksumed Fs.
|
CommonConfigurationKeys |
This class contains constants for configuration keys used
in the common code.
|
CommonConfigurationKeysPublic |
This class contains constants for configuration keys used
in the common code.
|
ContentSummary |
Store the summary of a content (a directory or a file).
|
DelegateToFileSystem |
Implementation of AbstractFileSystem based on the existing implementation of
FileSystem . |
DelegationTokenRenewer |
A daemon thread that waits for the next file system to renew.
|
DelegationTokenRenewer.RenewAction<T extends FileSystem & DelegationTokenRenewer.Renewable> |
An action that will renew and replace the file system's delegation
tokens automatically.
|
DF |
Filesystem disk space usage statistics.
|
DU |
Filesystem disk space usage statistics.
|
DUHelper | |
FileChecksum |
An abstract class representing file checksums for files.
|
FileContext |
The FileContext class provides an interface to the application writer for
using the Hadoop file system.
|
FileStatus |
Interface that represents the client side information for a file.
|
FileSystem |
An abstract base class for a fairly generic filesystem.
|
FileSystem.Statistics | |
FileSystemLinkResolver<T> |
FileSystem-specific class used to operate on and resolve symlinks in a path.
|
FileUtil |
A collection of file-processing util methods
|
FileUtil.HardLink | Deprecated
Use
HardLink |
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. |
FilterFs |
A
FilterFs 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.
|
FSLinkResolver<T> |
Used primarily by
FileContext to operate on and resolve
symlinks in a path. |
FSOutputSummer |
This is a generic output stream for generating checksums for
data before it is written to the underlying stream
|
FsServerDefaults |
Provides server default configuration values to clients.
|
FsShell |
Provide command line access to a FileSystem.
|
FsShellPermissions |
This class is the home for file permissions related commands.
|
FsShellPermissions.Chgrp |
Used to change group of files
|
FsShellPermissions.Chmod |
The pattern is almost as flexible as mode allowed by chmod shell command.
|
FsShellPermissions.Chown |
Used to change owner and/or group of files
|
FsStatus |
This class is used to represent the capacity, free and used space on a
FileSystem . |
FsUrlStreamHandlerFactory |
Factory for URL stream handlers.
|
GlobFilter |
A filter for POSIX glob pattern with brace expansions.
|
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.
|
Hdfs | |
HdfsBlockLocation |
Wrapper for
BlockLocation that also includes a LocatedBlock ,
allowing more detailed queries to the datanode about a block. |
HdfsVolumeId |
HDFS-specific volume identifier which implements
VolumeId . |
LocalDirAllocator |
An implementation of a round-robin scheme for disk allocation for creating
files.
|
LocalFileSystem |
Implement the FileSystem API for the checksumed local filesystem.
|
LocalFileSystemConfigKeys |
This class contains constants for configuration keys used
in the local file system, raw local fs and checksum fs.
|
LocatedFileStatus |
This class defines a FileStatus that includes a file's block locations.
|
MD5MD5CRC32CastagnoliFileChecksum |
For CRC32 with the Castagnoli polynomial
|
MD5MD5CRC32FileChecksum |
MD5 of MD5 of CRC32.
|
MD5MD5CRC32GzipFileChecksum |
For CRC32 with the Gzip polynomial
|
Options |
This class contains options related to file system operations.
|
Options.ChecksumOpt |
This is used in FileSystem and FileContext to specify checksum options.
|
Options.CreateOpts |
Class to support the varargs for create() options.
|
Options.CreateOpts.BlockSize | |
Options.CreateOpts.BufferSize | |
Options.CreateOpts.BytesPerChecksum |
This is not needed if ChecksumParam is specified.
|
Options.CreateOpts.ChecksumParam | |
Options.CreateOpts.CreateParent | |
Options.CreateOpts.Perms | |
Options.CreateOpts.Progress | |
Options.CreateOpts.ReplicationFactor | |
Path |
Names a file or directory in a
FileSystem . |
RawLocalFileSystem |
Implement the FileSystem API for the raw local filesystem.
|
Trash |
Provides a trash facility which supports pluggable Trash policies.
|
TrashPolicy |
This interface is used for implementing different Trash policies.
|
TrashPolicyDefault |
Provides a trash feature.
|
Enum | Description |
---|---|
CreateFlag |
CreateFlag specifies the file create semantic.
|
HardLink.OSType | |
Options.Rename |
Enum to support the varargs for rename() options
|
Exception | Description |
---|---|
ChecksumException |
Thrown for checksum errors.
|
FileAlreadyExistsException |
Used when target file already exists for any operation and
is not configured to be overwritten.
|
InvalidPathException |
Path string is invalid either because it has invalid characters or due to
other file system specific reasons.
|
ParentNotDirectoryException |
Indicates that the parent of specified Path is not a directory
as expected.
|
PathAccessDeniedException |
EACCES
|
PathExistsException |
Exception corresponding to File Exists - EEXISTS
|
PathIOException |
Exceptions based on standard posix/linux style exceptions for path related
errors.
|
PathIsDirectoryException |
EISDIR
|
PathIsNotDirectoryException |
ENOTDIR
|
PathIsNotEmptyDirectoryException |
Generated by rm commands
|
PathNotFoundException |
Exception corresponding to Permission denied - ENOENT
|
PathOperationException |
ENOTSUP
|
PathPermissionException |
Exception corresponding to Operation Not Permitted - EPERM
|
UnresolvedLinkException |
Thrown when a symbolic link is encountered in a path.
|
UnsupportedFileSystemException |
File system for a given file system name/scheme is not supported
|
Error | Description |
---|---|
FSError |
Thrown for unexpected filesystem errors, presumed to reflect disk errors
in the native filesystem.
|
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