| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.namenode | |
| org.apache.hadoop.hdfs.server.namenode.snapshot | 
| Class and Description | 
|---|
| DirectoryWithSnapshotFeature.DirectoryDiffList A list of directory diffs. | 
| Class and Description | 
|---|
| DiffList This interface defines the methods used to store and manage InodeDiffs. | 
| DirectoryWithSnapshotFeature.DirectoryDiff The difference of an  INodeDirectorybetween two snapshots. | 
| FileDiffList A list of FileDiffs for storing snapshot data. | 
| SnapshotFSImageFormat.ReferenceMap A reference map for fsimage serialization. | 
| SnapshotStatsMXBean This is an interface used to retrieve statistic information related to
 snapshots | 
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