| Interface | Description |
|---|---|
| BatchedRemoteIterator.BatchedEntries<E> | |
| BlockStoragePolicySpi |
A storage policy specifies the placement of block replicas on specific
storage types.
|
| ByteBufferPositionedReadable |
Implementers of this interface provide a positioned read API that writes to a
ByteBuffer rather than a byte[]. |
| ByteBufferReadable |
Implementers of this interface provide a read API that writes to a
ByteBuffer, not a byte[].
|
| CanSetDropBehind | |
| CanSetReadahead | |
| CanUnbuffer |
FSDataInputStreams implement this interface to indicate that they can clear
their buffers on request.
|
| DelegationTokenRenewer.Renewable |
The renewable interface used by the renewer.
|
| FsConstants |
FileSystem related constants.
|
| GetSpaceUsed | |
| GlobalStorageStatistics.StorageStatisticsProvider |
A callback API for creating new StorageStatistics instances.
|
| 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.
|
| StorageStatistics.CommonStatisticNames |
These are common statistic names.
|
| StreamCapabilities |
Interface to query streams for supported capabilities.
|
| Syncable |
This interface for flush/sync operation.
|
| 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. |
| BatchedRemoteIterator<K,E> |
A RemoteIterator that fetches elements in batches.
|
| BatchedRemoteIterator.BatchedListEntries<E> | |
| BlockLocation |
Represents the network location of a block, information about the hosts
that contain block replicas, and other block metadata (E.g.
|
| ChecksumFileSystem |
Abstract Checksumed FileSystem.
|
| 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).
|
| ContentSummary.Builder |
We don't use generics.
|
| DelegationTokenRenewer.RenewAction<T extends FileSystem & DelegationTokenRenewer.Renewable> |
An action that will renew and replace the file system's delegation
tokens automatically.
|
| 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 |
Tracks statistics about how many reads, writes, and so forth have been
done in a FileSystem.
|
| FileSystem.Statistics.StatisticsData |
Statistics data.
|
| 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. |
| FSDataInputStream |
Utility that wraps a
FSInputStream in a DataInputStream
and buffers input through a BufferedInputStream. |
| FSDataOutputStream |
Utility that wraps a
OutputStream in a DataOutputStream. |
| FSDataOutputStreamBuilder<S extends FSDataOutputStream,B extends FSDataOutputStreamBuilder<S,B>> |
Builder for
FSDataOutputStream and its subclasses. |
| FSExceptionMessages |
Standard strings to use in exception messages in filesystems
HDFS is used as the reference source of the strings
|
| FSInputStream |
FSInputStream is a generic old InputStream with a little bit
of RAF-style seek ability.
|
| FsServerDefaults |
Provides server default configuration values to clients.
|
| 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. |
| GetSpaceUsed.Builder |
The builder class
|
| GlobFilter |
A filter 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.
|
| HarFs | |
| LocalFileSystem |
Implement the FileSystem API for the checksumed local filesystem.
|
| LocatedFileStatus |
This class defines a FileStatus that includes a file's block locations.
|
| MD5MD5CRC32CastagnoliFileChecksum |
For CRC32 with the Castagnoli polynomial
|
| 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. |
| QuotaUsage |
Store the quota usage of a directory.
|
| QuotaUsage.Builder |
Builder class for QuotaUsage.
|
| RawLocalFileSystem |
Implement the FileSystem API for the raw local filesystem.
|
| StorageStatistics |
StorageStatistics contains statistics data for a FileSystem or FileContext
instance.
|
| StorageStatistics.LongStatistic |
A 64-bit storage statistic.
|
| StreamCapabilitiesPolicy |
Static methods to implement policies for
StreamCapabilities. |
| Trash |
Provides a trash facility which supports pluggable Trash policies.
|
| TrashPolicy |
This interface is used for implementing different Trash policies.
|
| Enum | Description |
|---|---|
| CreateFlag |
CreateFlag specifies the file create semantic.
|
| GlobalStorageStatistics |
Stores global storage statistics objects.
|
| Options.Rename |
Enum to support the varargs for rename() options
|
| ReadOption |
Options that can be used when reading from a FileSystem.
|
| StorageType |
Defines the types of supported storage media.
|
| StreamCapabilities.StreamCapability | Deprecated |
| XAttrCodec |
The value of
XAttr is byte[], this class is to
covert byte[] to some kind of string representation or convert back. |
| XAttrSetFlag |
| 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.
|
| InvalidRequestException |
Thrown when the user makes a malformed request, for example missing required
parameters or parameters that are not valid.
|
| 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 path not found: ENOENT/ENOFILE
|
| PathOperationException |
ENOTSUP
|
| PathPermissionException |
Exception corresponding to Operation Not Permitted - EPERM
|
| UnsupportedFileSystemException |
File system for a given file system name/scheme is not supported
|
| ZeroCopyUnavailableException |
| Error | Description |
|---|---|
| FSError |
Thrown for unexpected filesystem errors, presumed to reflect disk errors
in the native filesystem.
|
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