Package org.apache.hadoop.hdfs.server.namenode.snapshot

Interface Summary

Interface	Description
DiffList<T extends java.lang.Comparable<java.lang.Integer>>	This interface defines the methods used to store and manage InodeDiffs.
SnapshotStatsMXBean	This is an interface used to retrieve statistic information related to snapshots

Class Summary

Class	Description
DiffListByArrayList<T extends java.lang.Comparable<java.lang.Integer>>	Resizable-array implementation of the DiffList interface.
DiffListBySkipList	SkipList is an implementation of a data structure for storing a sorted list of Directory Diff elements, using a hierarchy of linked lists that connect increasingly sparse subsequences(defined by skip interval here) of the diffs.
DirectoryDiffListFactory	For creating DiffList for DirectoryWithSnapshotFeature.DirectoryDiff.
DirectorySnapshottableFeature	A directory with this feature is a snapshottable directory, where snapshots can be taken.
DirectoryWithSnapshotFeature	Feature used to store and process the snapshot diff information for a directory.
DirectoryWithSnapshotFeature.DirectoryDiff	The difference of an INodeDirectory between two snapshots.
DirectoryWithSnapshotFeature.DirectoryDiffList	A list of directory diffs.
FileDiff	The difference of an INodeFile between two snapshots.
FileDiffList	A list of FileDiffs for storing snapshot data.
FileWithSnapshotFeature	Feature for file with snapshot-related information.
FSImageFormatPBSnapshot
FSImageFormatPBSnapshot.Loader	Loading snapshot related information from protobuf based FSImage
FSImageFormatPBSnapshot.Saver	Saving snapshot related information to protobuf based FSImage
Snapshot	Snapshot of a sub-tree in the namesystem.
Snapshot.Root	The root directory of the snapshot.
SnapshotDeletionGc
SnapshotFSImageFormat	A helper class defining static methods for reading/writing snapshot related information from/to FSImage.
SnapshotFSImageFormat.ReferenceMap	A reference map for fsimage serialization.
SnapshotManager	Manage snapshottable directories and their snapshots.