Uses of Package
org.apache.hadoop.fs

Packages that use org.apache.hadoop.fs

Package	Description
org.apache.hadoop.conf	Configuration of system parameters.
org.apache.hadoop.filecache
org.apache.hadoop.fs	Implementations of AbstractFileSystem for hdfs over rpc and hdfs over web.
org.apache.hadoop.fs.adl	Supporting classes for metrics instrumentation.
org.apache.hadoop.fs.azure	A distributed implementation of FileSystem for reading and writing files on Azure Block Storage.
org.apache.hadoop.fs.ftp
org.apache.hadoop.fs.s3a	S3A Filesystem.
org.apache.hadoop.fs.s3native	A distributed implementation of FileSystem for reading and writing files on Amazon S3.
org.apache.hadoop.fs.viewfs
org.apache.hadoop.hdfs.client	This package provides the administrative APIs for HDFS.
org.apache.hadoop.hdfs.protocol
org.apache.hadoop.hdfs.server.namenode
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.mapred
org.apache.hadoop.mapred.lib
org.apache.hadoop.mapred.lib.db
org.apache.hadoop.mapreduce
org.apache.hadoop.mapreduce.lib.input
org.apache.hadoop.mapreduce.lib.join
org.apache.hadoop.mapreduce.lib.output
org.apache.hadoop.mapreduce.lib.partition
org.apache.hadoop.mapreduce.security
org.apache.hadoop.mapreduce.v2.hs
org.apache.hadoop.metrics2.sink	Builtin metrics sinks
org.apache.hadoop.registry.client.api	YARN Registry Client API.
org.apache.hadoop.security
org.apache.hadoop.tools	Command-line tools for MapReduce.
org.apache.hadoop.yarn.api.records
org.apache.hadoop.yarn.client.api
org.apache.hadoop.yarn.logaggregation
org.apache.hadoop.yarn.util

Classes in org.apache.hadoop.fs used by org.apache.hadoop.conf

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.filecache

Class and Description
FileStatus Interface that represents the client side information for a file.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs

Class and Description
AbstractFileSystem This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
BlockLocation Represents the network location of a block, information about the hosts that contain block replicas, and other block metadata (E.g.
BlockStoragePolicySpi A storage policy specifies the placement of block replicas on specific storage types.
ByteBufferReadable Implementers of this interface provide a read API that writes to a ByteBuffer, not a byte[].
CacheFlag Specifies semantics for CacheDirective operations.
CanSetDropBehind
CanSetReadahead
CanUnbuffer FSDataInputStreams implement this interface to indicate that they can clear their buffers on request.
ChecksumFileSystem Abstract Checksumed FileSystem.
ContentSummary Store the summary of a content (a directory or a file).
CreateFlag CreateFlag specifies the file create semantic.
FileAlreadyExistsException Used when target file already exists for any operation and is not configured to be overwritten.
FileChecksum An abstract class representing file checksums for files.
FileContext The FileContext class provides an interface for users of 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.
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 Builder for FSDataOutputStream and its subclasses.
FsServerDefaults Provides server default configuration values to clients.
FsStatus This class is used to represent the capacity, free and used space on a FileSystem.
GlobalStorageStatistics Stores global storage statistics objects.
LocalFileSystem Implement the FileSystem API for the checksumed local filesystem.
LocatedFileStatus This class defines a FileStatus that includes a file's block locations.
ParentNotDirectoryException Indicates that the parent of specified Path is not a directory as expected.
Path Names a file or directory in a FileSystem.
PathFilter
PositionedReadable Stream that permits positional reading.
QuotaUsage Store the quota usage of a directory.
ReadOption Options that can be used when reading from a FileSystem.
Seekable Stream that permits seeking.
StorageStatistics StorageStatistics contains statistics data for a FileSystem or FileContext instance.
StorageType Defines the types of supported storage media.
StreamCapabilities Interface to query streams for supported capabilities.
Syncable This interface for flush/sync operation.
TrashPolicy This interface is used for implementing different Trash policies.
UnsupportedFileSystemException File system for a given file system name/scheme is not supported
XAttrCodec The value of XAttr is byte[], this class is to covert byte[] to some kind of string representation or convert back.
XAttrSetFlag

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.adl

Class and Description
AbstractFileSystem This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
BlockLocation Represents the network location of a block, information about the hosts that contain block replicas, and other block metadata (E.g.
ContentSummary Store the summary of a content (a directory or a file).
CreateFlag CreateFlag specifies the file create semantic.
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.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.azure

Class and Description
AbstractFileSystem This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
BlockLocation Represents the network location of a block, information about the hosts that contain block replicas, and other block metadata (E.g.
CreateFlag CreateFlag specifies the file create semantic.
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.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.ftp

Class and Description
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.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.s3a

Class and Description
AbstractFileSystem This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.s3native

Class and Description
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.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.viewfs

Class and Description
AbstractFileSystem This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
BlockLocation Represents the network location of a block, information about the hosts that contain block replicas, and other block metadata (E.g.
BlockStoragePolicySpi A storage policy specifies the placement of block replicas on specific storage types.
ContentSummary Store the summary of a content (a directory or a file).
CreateFlag CreateFlag specifies the file create semantic.
FileAlreadyExistsException Used when target file already exists for any operation and is not configured to be overwritten.
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.
FSDataInputStream Utility that wraps a FSInputStream in a DataInputStream and buffers input through a BufferedInputStream.
FSDataOutputStream Utility that wraps a OutputStream in a DataOutputStream.
FsServerDefaults Provides server default configuration values to clients.
FsStatus This class is used to represent the capacity, free and used space on a FileSystem.
LocatedFileStatus This class defines a FileStatus that includes a file's block locations.
ParentNotDirectoryException Indicates that the parent of specified Path is not a directory as expected.
Path Names a file or directory in a FileSystem.
PathFilter
QuotaUsage Store the quota usage of a directory.
UnsupportedFileSystemException File system for a given file system name/scheme is not supported
XAttrSetFlag

Classes in org.apache.hadoop.fs used by org.apache.hadoop.hdfs.client

Class and Description
BlockStoragePolicySpi A storage policy specifies the placement of block replicas on specific storage types.
ByteBufferReadable Implementers of this interface provide a read API that writes to a ByteBuffer, not a byte[].
CacheFlag Specifies semantics for CacheDirective operations.
CanSetDropBehind
CanSetReadahead
CanUnbuffer FSDataInputStreams implement this interface to indicate that they can clear their buffers on request.
FSDataInputStream Utility that wraps a FSInputStream in a DataInputStream and buffers input through a BufferedInputStream.
FSDataOutputStream Utility that wraps a OutputStream in a DataOutputStream.
Path Names a file or directory in a FileSystem.
PositionedReadable Stream that permits positional reading.
Seekable Stream that permits seeking.
StorageType Defines the types of supported storage media.
StreamCapabilities Interface to query streams for supported capabilities.
Syncable This interface for flush/sync operation.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.hdfs.protocol

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.hdfs.server.namenode

Class and Description
FileStatus Interface that represents the client side information for a file.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.io

Class and Description
CreateFlag CreateFlag specifies the file create semantic.
FileContext The FileContext class provides an interface for users of the Hadoop file system.
FileSystem An abstract base class for a fairly generic filesystem.
FSDataOutputStream Utility that wraps a OutputStream in a DataOutputStream.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.io.compress

Class and Description
Path Names a file or directory in a FileSystem.
Seekable Stream that permits seeking.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapred

Class and Description
FileSystem An abstract base class for a fairly generic filesystem.
Path Names a file or directory in a FileSystem.
PathFilter

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapred.lib

Class and Description
FileSystem An abstract base class for a fairly generic filesystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapred.lib.db

Class and Description
FileSystem An abstract base class for a fairly generic filesystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce

Class and Description
FileSystem An abstract base class for a fairly generic filesystem.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce.lib.input

Class and Description
BlockLocation Represents the network location of a block, information about the hosts that contain block replicas, and other block metadata (E.g.
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.
PathFilter

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce.lib.join

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce.lib.output

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce.lib.partition

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce.security

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.mapreduce.v2.hs

Class and Description
FileContext The FileContext class provides an interface for users of the Hadoop file system.
FileStatus Interface that represents the client side information for a file.
Path Names a file or directory in a FileSystem.
PathFilter
UnsupportedFileSystemException File system for a given file system name/scheme is not supported

Classes in org.apache.hadoop.fs used by org.apache.hadoop.metrics2.sink

Class and Description
FileSystem An abstract base class for a fairly generic filesystem.
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.registry.client.api

Class and Description
FileAlreadyExistsException Used when target file already exists for any operation and is not configured to be overwritten.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.security

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.tools

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.yarn.api.records

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.yarn.client.api

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.yarn.logaggregation

Class and Description
Path Names a file or directory in a FileSystem.

Classes in org.apache.hadoop.fs used by org.apache.hadoop.yarn.util

Class and Description
Path Names a file or directory in a FileSystem.