Uses of Interface
alluxio.underfs.UnderFileSystem

Packages that use UnderFileSystem

Package	Description
alluxio.concurrent
alluxio.examples
alluxio.master.file.meta
alluxio.master.journalv0.ufs
alluxio.underfs
alluxio.underfs.cos
alluxio.underfs.gcs
alluxio.underfs.hdfs
alluxio.underfs.kodo
alluxio.underfs.local
alluxio.underfs.oss
alluxio.underfs.s3a
alluxio.underfs.swift
alluxio.underfs.wasb
alluxio.underfs.web
alluxio.util
alluxio.worker.block
alluxio.worker.file
alluxio.worker.grpc

Uses of UnderFileSystem in alluxio.concurrent

Classes in alluxio.concurrent that implement UnderFileSystem

Modifier and Type	Class and Description
class	ManagedBlockingUfsForwarder Forwarder for UnderFileSystem objects that works through with ForkJoinPool's managed blocking.

Constructors in alluxio.concurrent with parameters of type UnderFileSystem

Constructor and Description
ManagedBlockingUfsForwarder(UnderFileSystem ufs) Creates ManagedBlockingUfsForwarder instance.

Uses of UnderFileSystem in alluxio.examples

Constructors in alluxio.examples with parameters of type UnderFileSystem

Constructor and Description
S3ASpecificOperations(String testDirectory, UnderFileSystem ufs, InstancedConfiguration configuration)
UnderFileSystemCommonOperations(String ufsPath, String topLevelTestDirectory, UnderFileSystem ufs, InstancedConfiguration configuration)

Uses of UnderFileSystem in alluxio.master.file.meta

Methods in alluxio.master.file.meta that return types with arguments of type UnderFileSystem

Modifier and Type	Method and Description
CloseableResource<UnderFileSystem>	MountTable.Resolution.acquireUfsResource()

Uses of UnderFileSystem in alluxio.master.journalv0.ufs

Constructors in alluxio.master.journalv0.ufs with parameters of type UnderFileSystem

Constructor and Description
EntryOutputStream(UnderFileSystem ufs, URI log, JournalFormatter journalFormatter, UfsJournalWriter journalWriter)
UfsCheckpointManager(UnderFileSystem ufs, URI checkpoint, UfsJournalWriter writer) Creates a new instance of UfsCheckpointManager.

Uses of UnderFileSystem in alluxio.underfs

Subinterfaces of UnderFileSystem in alluxio.underfs

Modifier and Type	Interface and Description
interface	AtomicFileOutputStreamCallback A AtomicFileOutputStreamCallback is the callback interface used when using a AtomicFileOutputStream.

Classes in alluxio.underfs that implement UnderFileSystem

Modifier and Type	Class and Description
class	BaseUnderFileSystem A base abstract UnderFileSystem.
class	ConsistentUnderFileSystem Represents a consistent under filesystem which does not have eventual consistency issues.
class	ObjectUnderFileSystem An object based abstract UnderFileSystem.
class	UnderFileSystemWithLogging This class forwards all calls to the UnderFileSystem interface to an internal implementation.

Fields in alluxio.underfs with type parameters of type UnderFileSystem

Modifier and Type	Field and Description
protected ConcurrentHashMap<AbstractUfsManager.Key,UnderFileSystem>	AbstractUfsManager.mUnderFileSystemMap Maps from key to UnderFileSystem instances.

Methods in alluxio.underfs that return UnderFileSystem

Modifier and Type	Method and Description
static UnderFileSystem	UnderFileSystem.Factory.create(String path, AlluxioConfiguration conf) Creates the UnderFileSystem instance according to its UFS path.
UnderFileSystem	UnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf) Creates a new client for accessing the given path.
static UnderFileSystem	UnderFileSystem.Factory.create(String path, UnderFileSystemConfiguration ufsConf) Creates a client for operations involved with the under file system.
static UnderFileSystem	UnderFileSystem.Factory.createForRoot(AlluxioConfiguration conf)
UnderFileSystem	UnderFileSystemWithLogging.getUnderFileSystem() This is only used in the test.

Methods in alluxio.underfs that return types with arguments of type UnderFileSystem

Modifier and Type	Method and Description
CloseableResource<UnderFileSystem>	UfsManager.UfsClient.acquireUfsResource()

Methods in alluxio.underfs with parameters of type UnderFileSystem

Modifier and Type	Method and Description
protected void	JobUfsManager.connectUfs(UnderFileSystem fs)
protected void	WorkerUfsManager.connectUfs(UnderFileSystem fs)
protected void	MasterUfsManager.connectUfs(UnderFileSystem fs)
protected abstract void	AbstractUfsManager.connectUfs(UnderFileSystem fs) Takes any necessary actions required to establish a connection to the under file system.

Constructor parameters in alluxio.underfs with type arguments of type UnderFileSystem

Constructor and Description
UfsClient(java.util.function.Supplier<UnderFileSystem> ufsSupplier, AlluxioURI ufsMountPointUri)

Uses of UnderFileSystem in alluxio.underfs.cos

Classes in alluxio.underfs.cos that implement UnderFileSystem

Modifier and Type	Class and Description
class	COSUnderFileSystem Tencent Cloud COS UnderFileSystem implementation.

Methods in alluxio.underfs.cos that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	COSUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.gcs

Classes in alluxio.underfs.gcs that implement UnderFileSystem

Modifier and Type	Class and Description
class	GCSUnderFileSystem GCS FS UnderFileSystem implementation based on the jets3t library.

Methods in alluxio.underfs.gcs that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	GCSUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.hdfs

Classes in alluxio.underfs.hdfs that implement UnderFileSystem

Modifier and Type	Class and Description
class	HdfsUnderFileSystem HDFS UnderFileSystem implementation.

Methods in alluxio.underfs.hdfs that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	HdfsUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.kodo

Classes in alluxio.underfs.kodo that implement UnderFileSystem

Modifier and Type	Class and Description
class	KodoUnderFileSystem Qiniu Kodo UnderFileSystem implementation.

Methods in alluxio.underfs.kodo that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	KodoUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.local

Classes in alluxio.underfs.local that implement UnderFileSystem

Modifier and Type	Class and Description
class	LocalUnderFileSystem Local FS UnderFileSystem implementation.

Methods in alluxio.underfs.local that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	LocalUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.oss

Classes in alluxio.underfs.oss that implement UnderFileSystem

Modifier and Type	Class and Description
class	OSSUnderFileSystem Aliyun OSS UnderFileSystem implementation.

Methods in alluxio.underfs.oss that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	OSSUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.s3a

Classes in alluxio.underfs.s3a that implement UnderFileSystem

Modifier and Type	Class and Description
class	S3AUnderFileSystem S3 UnderFileSystem implementation based on the aws-java-sdk-s3 library.

Methods in alluxio.underfs.s3a that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	S3AUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.swift

Classes in alluxio.underfs.swift that implement UnderFileSystem

Modifier and Type	Class and Description
class	SwiftUnderFileSystem OpenStack Swift UnderFileSystem implementation based on the JOSS library.

Methods in alluxio.underfs.swift that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	SwiftUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.wasb

Classes in alluxio.underfs.wasb that implement UnderFileSystem

Modifier and Type	Class and Description
class	WasbUnderFileSystem An UnderFileSystem uses the Microsoft Azure Blob Storage.

Methods in alluxio.underfs.wasb that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	WasbUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.underfs.web

Classes in alluxio.underfs.web that implement UnderFileSystem

Modifier and Type	Class and Description
class	WebUnderFileSystem Web UnderFileSystem implementation.

Methods in alluxio.underfs.web that return UnderFileSystem

Modifier and Type	Method and Description
UnderFileSystem	WebUnderFileSystemFactory.create(String path, UnderFileSystemConfiguration conf)

Uses of UnderFileSystem in alluxio.util

Methods in alluxio.util with parameters of type UnderFileSystem

Modifier and Type	Method and Description
static void	UnderFileSystemUtils.deleteDirIfExists(UnderFileSystem ufs, String path) Deletes the directory at the given path if it exists.
static void	UnderFileSystemUtils.deleteFileIfExists(UnderFileSystem ufs, String path) Deletes the specified path from the specified under file system if it is a file and exists.
static boolean	UnderFileSystemUtils.isGcs(UnderFileSystem ufs)
static boolean	UnderFileSystemUtils.isHdfs(UnderFileSystem ufs)
static boolean	UnderFileSystemUtils.isLocal(UnderFileSystem ufs)
static boolean	UnderFileSystemUtils.isOss(UnderFileSystem ufs)
static boolean	UnderFileSystemUtils.isS3(UnderFileSystem ufs)
static boolean	UnderFileSystemUtils.isSwift(UnderFileSystem ufs)
static boolean	UnderFileSystemUtils.isWeb(UnderFileSystem ufs)
static void	UnderFileSystemUtils.mkdirIfNotExists(UnderFileSystem ufs, String path) Attempts to create the directory if it does not already exist.
static void	UnderFileSystemUtils.touch(UnderFileSystem ufs, String path) Creates an empty file.

Uses of UnderFileSystem in alluxio.worker.block

Methods in alluxio.worker.block with parameters of type UnderFileSystem

Modifier and Type	Method and Description
InputStream	UfsInputStreamManager.acquire(UnderFileSystem ufs, String path, long fileId, OpenOptions openOptions) Acquires an input stream.
InputStream	UfsInputStreamManager.acquire(UnderFileSystem ufs, String path, long fileId, OpenOptions openOptions, boolean reuse) Acquires an input stream.

Uses of UnderFileSystem in alluxio.worker.file

Methods in alluxio.worker.file with parameters of type UnderFileSystem

Modifier and Type	Method and Description
static void	UnderFileSystemUtils.prepareFilePath(AlluxioURI alluxioPath, String ufsPath, FileSystem fs, UnderFileSystem ufs) Creates parent directories for path with correct permissions if required.

Uses of UnderFileSystem in alluxio.worker.grpc

Methods in alluxio.worker.grpc that return types with arguments of type UnderFileSystem

Modifier and Type	Method and Description
CloseableResource<UnderFileSystem>	BlockWriteRequestContext.getUfsResource()
CloseableResource<UnderFileSystem>	UfsFileWriteRequestContext.getUfsResource()

Method parameters in alluxio.worker.grpc with type arguments of type UnderFileSystem

Modifier and Type	Method and Description
void	BlockWriteRequestContext.setUfsResource(CloseableResource<UnderFileSystem> ufsResource)
void	UfsFileWriteRequestContext.setUfsResource(CloseableResource<UnderFileSystem> ufsResource)