Package alluxio.underfs

Interface Summary

Interface	Description
AtomicFileOutputStreamCallback	A AtomicFileOutputStreamCallback is the callback interface used when using a AtomicFileOutputStream.
ObjectUnderFileSystem.ObjectListingChunk	A chunk of listing results.
UfsManager	A class that manages the UFS used by different services.
UnderFileSystem	Alluxio stores data into an under layer file system.
UnderFileSystemFactory	Interface for under file system factories.
UnderFileSystemWithLogging.UfsCallable<T>	Interface representing a callable to the under storage system which throws an IOException if an error occurs during the external communication.

Class Summary

Class	Description
AbstractUfsManager	Basic implementation of UfsManager.
AbstractUfsManager.Key	The key of the UFS cache.
AtomicFileOutputStream	A AtomicFileOutputStream writes to a temporary file and renames on close.
BaseUnderFileSystem	A base abstract UnderFileSystem.
Fingerprint	Fingerprint for a UFS file or directory.
MasterUfsManager	A class that manages the UFS for master servers.
MasterUfsManager.UfsState	UnderFileSystem.UfsMode and mount ids corresponding to a physical ufs.
MultiRangeObjectInputStream	A stream for reading data using range queries.
ObjectUnderFileSystem	An object based abstract UnderFileSystem.
SeekableUnderFileInputStream	A seekable under file input stream wrapper that encapsulates the under file input stream.
UfsDirectoryStatus	Information about a directory in the under file system.
UfsFileStatus	Information about a file in UnderFileSystem.
UfsManager.UfsClient	Container for a UFS and the URI for that UFS.
UfsStatus	Information about a file or a directory in the under file system.
UnderFileSystem.Factory	The factory for the UnderFileSystem.
UnderFileSystemConfiguration	A class that gets the value of the given key in the given UFS configuration or the global configuration (in case the key is not found in the UFS configuration), throw RuntimeException if the key is not found in both configurations..
UnderFileSystemFactoryRegistry	Central registry of available UnderFileSystemFactory instances that uses the ServiceLoader mechanism to automatically discover available factories and provides a central place for obtaining actual UnderFileSystem instances.
UnderFileSystemWithLogging	This class forwards all calls to the UnderFileSystem interface to an internal implementation.
WorkerUfsManager	The default implementation of UfsManager to manage the ufs used by different worker services.

Enum Summary

Enum	Description
Fingerprint.Tag	The possible tags within the fingerprint.
Fingerprint.Type	The possible types of the fingerprint.
UnderFileSystem.SpaceType	The different types of space indicate the total space, the free space and the space used in the under file system.
UnderFileSystem.UfsMode	Operation mode for under storage.