Uses of Package org.apache.hadoop.fs (Apache Hadoop Common 3.5.0 API)
Description: use: package: org.apache.hadoop.fs

# 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.crypto
Crypto related classes.
org.apache.hadoop.crypto.key
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
org.apache.hadoop.fs
An abstract file system API.
org.apache.hadoop.fs.crypto
org.apache.hadoop.fs.ftp
org.apache.hadoop.fs.http
Filesystem implementations that allow Hadoop to read directly from HTTP / HTTPS endpoints.
org.apache.hadoop.fs.impl
This package contains implementation classes for use inside filesystems.
org.apache.hadoop.fs.impl.prefetch
block caching for use in object store clients.
org.apache.hadoop.fs.local
Filesystem implementations that allow Hadoop to read directly from the local file system.
org.apache.hadoop.fs.permission
This package provides support for HDFS permission and ACL.
org.apache.hadoop.fs.protocolPB
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
org.apache.hadoop.fs.sftp
SFTP FileSystem package.
org.apache.hadoop.fs.shell
Support for the execution of a file system command.
org.apache.hadoop.fs.shell.find
org.apache.hadoop.fs.statistics
This package contains support for statistic collection and reporting.
org.apache.hadoop.fs.statistics.impl
Implementation support for statistics.
org.apache.hadoop.fs.store
This package is for classes to be shared across object stores; for internal use within the hadoop-* modules only.
org.apache.hadoop.fs.viewfs
ViewFileSystem and ViewFileSystemOverloadScheme classes.
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.io.wrappedio
Support for dynamic access to filesystem operations which are not available in older hadoop releases.
org.apache.hadoop.io.wrappedio.impl
Implementation/testing support for wrapped IO.
org.apache.hadoop.metrics2.sink
Builtin metrics sinks
org.apache.hadoop.security
Classes for hadoop security.
org.apache.hadoop.security.alias
Provides the hadoop credential provider API.
org.apache.hadoop.util
Common utilities.
org.apache.hadoop.util.functional
Support for functional programming within the Hadoop APIs.

- Classes in org.apache.hadoop.fs used by org.apache.hadoop.conf
  Class
  Description
  Path
  Names a file or directory in a `FileSystem`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.crypto
  Class
  Description
  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.
  HasEnhancedByteBufferAccess
  FSDataInputStreams implement this interface to provide enhanced byte buffer access.
  HasFileDescriptor
  Having a FileDescriptor
  PositionedReadable
  Stream that permits positional reading.
  ReadOption
  Options that can be used when reading from a FileSystem.
  Seekable
  Stream that permits seeking.
  StreamCapabilities
  Interface to query streams for supported capabilities.
  Syncable
  This is the interface for flush/sync operations.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.crypto.key
  Class
  Description
  Path
  Names a file or directory in a `FileSystem`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs
  Class
  Description
  Abortable
  Abort data being written to a stream, so that close() does not write the data.
  Abortable.AbortableResult
  Interface for the result of aborts; allows subclasses to extend (IOStatistics etc) or for future enhancements if ever needed.
  AbstractFileSystem
  This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
  BatchedRemoteIterator.BatchedEntries
  BlockLocation
  Represents the network location of a block, information about the hosts that contain block replicas, and other block metadata (E.g. the file offset associated with the block, length, whether it is corrupt, etc).
  BlockStoragePolicySpi
  A storage policy specifies the placement of block replicas on specific storage types.
  BulkDelete
  API for bulk deletion of objects/files, but not directories.
  BulkDeleteSource
  Interface for bulk deletion.
  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[].
  CachingGetSpaceUsed
  Interface for class that can tell estimate much space is used in a directory.
  CanSetDropBehind
  CanSetReadahead
  CanUnbuffer
  FSDataInputStreams implement this interface to indicate that they can clear their buffers on request.
  ChecksumFileSystem
  Abstract Checksumed FileSystem.
  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).
  ContentSummary.Builder
  We don't use generics.
  CreateFlag
  CreateFlag specifies the file create semantic.
  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.Renewable
  The renewable interface used by the renewer.
  DelegationTokenRenewer.RenewAction
  An action that will renew and replace the file system's delegation tokens automatically.
  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.
  FileContext.Util
  Utility/library methods built over the basic FileContext methods.
  FileRange
  A byte range of a file.
  FileStatus
  Interface that represents the client side information for a file.
  FileStatus.AttrFlags
  Flags for entity attributes.
  FileSystem
  An abstract base class for a fairly generic filesystem.
  FileSystem.DirectoryEntries
  Represents a batch of directory entries when iteratively listing a directory.
  FileSystem.Statistics
  Tracks statistics about how many reads, writes, and so forth have been done in a FileSystem.
  FileSystem.Statistics.StatisticsData
  Statistics data.
  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.
  FSBuilder
  The base interface which various FileSystem FileContext Builder interfaces can extend, and which underlying implementations will then implement.
  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.
  FSInputStream
  FSInputStream is a generic old InputStream with a little bit of RAF-style seek ability.
  FsServerDefaults
  Provides server default configuration values to clients.
  FsShell
  Provide command line access to a FileSystem.
  FsShell.Help
  Displays short usage of commands sans the long description
  FsShellPermissions
  This class is the home for file permissions related commands.
  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`.
  FutureDataInputStreamBuilder
  Builder for input streams and subclasses whose return value is actually a completable future: this allows for better asynchronous operation.
  GetSpaceUsed
  GetSpaceUsed.Builder
  The builder class
  GlobalStorageStatistics
  Stores global storage statistics objects.
  GlobalStorageStatistics.StorageStatisticsProvider
  A callback API for creating new StorageStatistics instances.
  Globber
  Implementation of `FileSystem.globStatus(Path, PathFilter)`.
  Globber.GlobBuilder
  Builder for Globber instances.
  HardLink
  Class for creating hardlinks.
  HardLink.LinkStats
  HardLink statistics counters and methods.
  HasEnhancedByteBufferAccess
  FSDataInputStreams implement this interface to provide enhanced byte buffer access.
  HasFileDescriptor
  Having a FileDescriptor
  InvalidPathHandleException
  Thrown when the constraints enoded in a `PathHandle` do not hold.
  LocalFileSystem
  Implement the FileSystem API for the checksumed local filesystem.
  LocatedFileStatus
  This class defines a FileStatus that includes a file's block locations.
  MD5MD5CRC32FileChecksum
  MD5 of MD5 of CRC32.
  MultipartUploader
  MultipartUploader is an interface for copying files multipart and across multiple nodes.
  MultipartUploaderBuilder
  Builder interface for Multipart readers.
  Options.ChecksumCombineMode
  Enum for indicating what mode to use when combining chunk and block checksums to define an aggregate FileChecksum.
  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
  Options.HandleOpt
  Options for creating `PathHandle` references.
  Options.HandleOpt.Data
  Option storing standard constraints on data.
  Options.HandleOpt.Location
  Option storing standard constraints on location.
  Options.Rename
  Enum to support the varargs for rename() options
  ParentNotDirectoryException
  Indicates that the parent of specified Path is not a directory as expected.
  PartHandle
  Opaque, serializable reference to a part id for multipart uploads.
  PartialListing
  A partial listing of the children of a parent directory.
  Path
  Names a file or directory in a `FileSystem`.
  PathCapabilities
  The Path counterpoint to `StreamCapabilities`; a query to see if, a FileSystem/FileContext instance has a specific capability under the given path.
  PathExistsException
  Exception corresponding to File Exists - EEXISTS
  PathFilter
  PathHandle
  Opaque, serializable reference to an entity in the FileSystem.
  PathIOException
  Exceptions based on standard posix/linux style exceptions for path related errors.
  PositionedReadable
  Stream that permits positional reading.
  QuotaUsage
  Store the quota usage of a directory.
  QuotaUsage.Builder
  Builder class for QuotaUsage.
  ReadOption
  Options that can be used when reading from a FileSystem.
  RemoteIterator
  An iterator over a collection whose elements need to be fetched remotely
  SafeModeAction
  An identical copy from org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction, that helps the other file system implementation to define `SafeMode`.
  Seekable
  Stream that permits seeking.
  StorageStatistics
  StorageStatistics contains statistics data for a FileSystem or FileContext instance.
  StorageStatistics.LongStatistic
  A 64-bit storage statistic.
  StorageType
  Defines the types of supported storage media.
  StreamCapabilities
  Interface to query streams for supported capabilities.
  StreamCapabilities.StreamCapability
  Deprecated.
  Syncable
  This is the interface for flush/sync operations.
  Trash
  Provides a trash facility which supports pluggable Trash policies.
  TrashPolicy
  This interface is used for implementing different Trash policies.
  UnresolvedLinkException
  Thrown when a symbolic link is encountered in a path.
  UnsupportedFileSystemException
  File system for a given file system name/scheme is not supported
  UploadHandle
  Opaque, serializable reference to an uploadId for multipart uploads.
  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.crypto
  Class
  Description
  Abortable
  Abort data being written to a stream, so that close() does not write the data.
  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.
  FSDataInputStream
  Utility that wraps a `FSInputStream` in a `DataInputStream` and buffers input through a `BufferedInputStream`.
  FSDataOutputStream
  Utility that wraps a `OutputStream` in a `DataOutputStream`.
  HasEnhancedByteBufferAccess
  FSDataInputStreams implement this interface to provide enhanced byte buffer access.
  HasFileDescriptor
  Having a FileDescriptor
  PositionedReadable
  Stream that permits positional reading.
  Seekable
  Stream that permits seeking.
  StreamCapabilities
  Interface to query streams for supported capabilities.
  Syncable
  This is the interface for flush/sync operations.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.ftp
  Class
  Description
  AbstractFileSystem
  This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
  BulkDeleteSource
  Interface for bulk deletion.
  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.
  DelegateToFileSystem
  Implementation of AbstractFileSystem based on the existing implementation of `FileSystem`.
  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.
  FSDataInputStream
  Utility that wraps a `FSInputStream` in a `DataInputStream` and buffers input through a `BufferedInputStream`.
  FSDataOutputStream
  Utility that wraps a `OutputStream` in a `DataOutputStream`.
  FSInputStream
  FSInputStream is a generic old InputStream with a little bit of RAF-style seek ability.
  FsServerDefaults
  Provides server default configuration values to clients.
  Path
  Names a file or directory in a `FileSystem`.
  PathCapabilities
  The Path counterpoint to `StreamCapabilities`; a query to see if, a FileSystem/FileContext instance has a specific capability under the given path.
  PositionedReadable
  Stream that permits positional reading.
  Seekable
  Stream that permits seeking.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.http
  Class
  Description
  BulkDeleteSource
  Interface for bulk deletion.
  FileSystem
  An abstract base class for a fairly generic filesystem.
  PathCapabilities
  The Path counterpoint to `StreamCapabilities`; a query to see if, a FileSystem/FileContext instance has a specific capability under the given path.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.impl
  Class
  Description
  AbstractFileSystem
  This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
  BulkDelete
  API for bulk deletion of objects/files, but not directories.
  CreateFlag
  CreateFlag specifies the file create semantic.
  FileContext
  The FileContext class provides an interface for users of the Hadoop file system.
  FileRange
  A byte range of a file.
  FileStatus
  Interface that represents the client side information for a file.
  FileSystem
  An abstract base class for a fairly generic filesystem.
  FSBuilder
  The base interface which various FileSystem FileContext Builder interfaces can extend, and which underlying implementations will then implement.
  FSLinkResolver
  Used primarily by `FileContext` to operate on and resolve symlinks in a path.
  FutureDataInputStreamBuilder
  Builder for input streams and subclasses whose return value is actually a completable future: this allows for better asynchronous operation.
  MultipartUploader
  MultipartUploader is an interface for copying files multipart and across multiple nodes.
  MultipartUploaderBuilder
  Builder interface for Multipart readers.
  Options.ChecksumOpt
  This is used in FileSystem and FileContext to specify checksum options.
  PartHandle
  Opaque, serializable reference to a part id for multipart uploads.
  Path
  Names a file or directory in a `FileSystem`.
  PathHandle
  Opaque, serializable reference to an entity in the FileSystem.
  StreamCapabilities
  Interface to query streams for supported capabilities.
  UnresolvedLinkException
  Thrown when a symbolic link is encountered in a path.
  UploadHandle
  Opaque, serializable reference to an uploadId for multipart uploads.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.impl.prefetch
  Class
  Description
  LocalDirAllocator
  An implementation of a round-robin scheme for disk allocation for creating files.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.local
  Class
  Description
  AbstractFileSystem
  This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
  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.
  DelegateToFileSystem
  Implementation of AbstractFileSystem based on the existing implementation of `FileSystem`.
  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.
  FsServerDefaults
  Provides server default configuration values to clients.
  Path
  Names a file or directory in a `FileSystem`.
  PathCapabilities
  The Path counterpoint to `StreamCapabilities`; a query to see if, a FileSystem/FileContext instance has a specific capability under the given path.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.permission
  Class
  Description
  FileStatus
  Interface that represents the client side information for a file.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.protocolPB
  Class
  Description
  FileStatus
  Interface that represents the client side information for a file.
  FSProtos.FileStatusProto
  FileStatus encoding.
  FSProtos.FsPermissionProto
  Protobuf type `hadoop.fs.FsPermissionProto`
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.sftp
  Class
  Description
  BulkDeleteSource
  Interface for bulk deletion.
  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`.
  PathCapabilities
  The Path counterpoint to `StreamCapabilities`; a query to see if, a FileSystem/FileContext instance has a specific capability under the given path.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.shell
  Class
  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`.
  Path
  Names a file or directory in a `FileSystem`.
  RemoteIterator
  An iterator over a collection whose elements need to be fetched remotely
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.shell.find
  Class
  Description
  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`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.statistics
  Class
  Description
  StreamCapabilities
  Interface to query streams for supported capabilities.
  Syncable
  This is the interface for flush/sync operations.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.statistics.impl
  Class
  Description
  StorageStatistics
  StorageStatistics contains statistics data for a FileSystem or FileContext instance.
  StorageStatistics.LongStatistic
  A 64-bit storage statistic.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.store
  Class
  Description
  FileChecksum
  An abstract class representing file checksums for files.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.fs.viewfs
  Class
  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. the file offset associated with the block, length, whether it is corrupt, etc).
  BlockStoragePolicySpi
  A storage policy specifies the placement of block replicas on specific storage types.
  BulkDeleteSource
  Interface for bulk deletion.
  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.
  Options.ChecksumOpt
  This is used in FileSystem and FileContext to specify checksum options.
  ParentNotDirectoryException
  Indicates that the parent of specified Path is not a directory as expected.
  Path
  Names a file or directory in a `FileSystem`.
  PathCapabilities
  The Path counterpoint to `StreamCapabilities`; a query to see if, a FileSystem/FileContext instance has a specific capability under the given path.
  PathFilter
  QuotaUsage
  Store the quota usage of a directory.
  RemoteIterator
  An iterator over a collection whose elements need to be fetched remotely
  UnresolvedLinkException
  Thrown when a symbolic link is encountered in a path.
  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.io
  Class
  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.
  FSDataInputStream
  Utility that wraps a `FSInputStream` in a `DataInputStream` and buffers input through a `BufferedInputStream`.
  FSDataOutputStream
  Utility that wraps a `OutputStream` in a `DataOutputStream`.
  Options.CreateOpts
  Class to support the varargs for create() options.
  Path
  Names a file or directory in a `FileSystem`.
  StreamCapabilities
  Interface to query streams for supported capabilities.
  Syncable
  This is the interface for flush/sync operations.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.io.compress
  Class
  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.io.file.tfile
  Class
  Description
  FSDataInputStream
  Utility that wraps a `FSInputStream` in a `DataInputStream` and buffers input through a `BufferedInputStream`.
  FSDataOutputStream
  Utility that wraps a `OutputStream` in a `DataOutputStream`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.io.wrappedio
  Class
  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`.
  Path
  Names a file or directory in a `FileSystem`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.io.wrappedio.impl
  Class
  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`.
  Path
  Names a file or directory in a `FileSystem`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.metrics2.sink
  Class
  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.security
  Class
  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.security.alias
  Class
  Description
  Path
  Names a file or directory in a `FileSystem`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.util
  Class
  Description
  ChecksumException
  Thrown for checksum errors.
  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`.
  LocalFileSystem
  Implement the FileSystem API for the checksumed local filesystem.
  Path
  Names a file or directory in a `FileSystem`.
- Classes in org.apache.hadoop.fs used by org.apache.hadoop.util.functional
  Class
  Description
  FSBuilder
  The base interface which various FileSystem FileContext Builder interfaces can extend, and which underlying implementations will then implement.
  RemoteIterator
  An iterator over a collection whose elements need to be fetched remotely