| Class and Description | 
|---|
| FsImageProto.SecretManagerSection Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection | 
| FsImageProto.SecretManagerSection.DelegationKey Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection.DelegationKey | 
| FsImageProto.SecretManagerSection.PersistToken Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection.PersistToken | 
| Class and Description | 
|---|
| AclEntryStatusFormat Class to pack an AclEntry into an integer. | 
| AuditLogger Interface defining an audit logger. | 
| CheckpointFaultInjector Utility class to faciliate some fault injection tests for the checkpointing
 process. | 
| Content The content types such as file, directory and symlink to be computed. | 
| ContentCounts The counter to be computed for content types such as file, directory and symlink,
 and the storage type usage such as SSD, DISK, ARCHIVE. | 
| ContentCounts.Builder | 
| DirectoryWithQuotaFeature Quota feature for  INodeDirectory. | 
| DirectoryWithQuotaFeature.Builder | 
| EncryptionFaultInjector Used to inject certain faults for testing. | 
| FSDirectory.DirOp | 
| FSEditLogOp.OpInstanceCache | 
| FSEditLogOp.Reader Class for reading editlog ops from a stream | 
| FSImageFormatProtobuf.LoaderContext | 
| FSImageFormatProtobuf.SaverContext | 
| FSImageFormatProtobuf.SectionName Supported section name. | 
| FsImageProto.CacheManagerSection Protobuf type  hadoop.hdfs.fsimage.CacheManagerSection | 
| FsImageProto.CacheManagerSection.Builder Protobuf type  hadoop.hdfs.fsimage.CacheManagerSection | 
| FsImageProto.CacheManagerSectionOrBuilder | 
| FsImageProto.ErasureCodingSection Protobuf type  hadoop.hdfs.fsimage.ErasureCodingSection | 
| FsImageProto.ErasureCodingSection.Builder Protobuf type  hadoop.hdfs.fsimage.ErasureCodingSection | 
| FsImageProto.ErasureCodingSectionOrBuilder | 
| FsImageProto.FileSummary Protobuf type  hadoop.hdfs.fsimage.FileSummary | 
| FsImageProto.FileSummary.Builder Protobuf type  hadoop.hdfs.fsimage.FileSummary | 
| FsImageProto.FileSummary.Section 
 index for each section | 
| FsImageProto.FileSummary.Section.Builder 
 index for each section | 
| FsImageProto.FileSummary.SectionOrBuilder | 
| FsImageProto.FileSummaryOrBuilder | 
| FsImageProto.FilesUnderConstructionSection 
 This section records information about under-construction files for
 reconstructing the lease map. | 
| FsImageProto.FilesUnderConstructionSection.Builder 
 This section records information about under-construction files for
 reconstructing the lease map. | 
| FsImageProto.FilesUnderConstructionSection.FileUnderConstructionEntry Protobuf type  hadoop.hdfs.fsimage.FilesUnderConstructionSection.FileUnderConstructionEntry | 
| FsImageProto.FilesUnderConstructionSection.FileUnderConstructionEntry.Builder Protobuf type  hadoop.hdfs.fsimage.FilesUnderConstructionSection.FileUnderConstructionEntry | 
| FsImageProto.FilesUnderConstructionSection.FileUnderConstructionEntryOrBuilder | 
| FsImageProto.FilesUnderConstructionSectionOrBuilder | 
| FsImageProto.INodeDirectorySection 
 This section records the children of each directories
 NAME: INODE_DIR | 
| FsImageProto.INodeDirectorySection.Builder 
 This section records the children of each directories
 NAME: INODE_DIR | 
| FsImageProto.INodeDirectorySection.DirEntry 
 A single DirEntry needs to fit in the default PB max message size of
 64MB. | 
| FsImageProto.INodeDirectorySection.DirEntry.Builder 
 A single DirEntry needs to fit in the default PB max message size of
 64MB. | 
| FsImageProto.INodeDirectorySection.DirEntryOrBuilder | 
| FsImageProto.INodeDirectorySectionOrBuilder | 
| FsImageProto.INodeReferenceSection Protobuf type  hadoop.hdfs.fsimage.INodeReferenceSection | 
| FsImageProto.INodeReferenceSection.Builder Protobuf type  hadoop.hdfs.fsimage.INodeReferenceSection | 
| FsImageProto.INodeReferenceSection.INodeReference Protobuf type  hadoop.hdfs.fsimage.INodeReferenceSection.INodeReference | 
| FsImageProto.INodeReferenceSection.INodeReference.Builder Protobuf type  hadoop.hdfs.fsimage.INodeReferenceSection.INodeReference | 
| FsImageProto.INodeReferenceSection.INodeReferenceOrBuilder | 
| FsImageProto.INodeReferenceSectionOrBuilder | 
| FsImageProto.INodeSection 
 Permission is serialized as a 64-bit long. | 
| FsImageProto.INodeSection.AclFeatureProto Protobuf type  hadoop.hdfs.fsimage.INodeSection.AclFeatureProto | 
| FsImageProto.INodeSection.AclFeatureProto.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.AclFeatureProto | 
| FsImageProto.INodeSection.AclFeatureProtoOrBuilder | 
| FsImageProto.INodeSection.Builder 
 Permission is serialized as a 64-bit long. | 
| FsImageProto.INodeSection.FileUnderConstructionFeature 
 under-construction feature for INodeFile | 
| FsImageProto.INodeSection.FileUnderConstructionFeature.Builder 
 under-construction feature for INodeFile | 
| FsImageProto.INodeSection.FileUnderConstructionFeatureOrBuilder | 
| FsImageProto.INodeSection.INode Protobuf type  hadoop.hdfs.fsimage.INodeSection.INode | 
| FsImageProto.INodeSection.INode.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.INode | 
| FsImageProto.INodeSection.INode.Type Protobuf enum  hadoop.hdfs.fsimage.INodeSection.INode.Type | 
| FsImageProto.INodeSection.INodeDirectory Protobuf type  hadoop.hdfs.fsimage.INodeSection.INodeDirectory | 
| FsImageProto.INodeSection.INodeDirectory.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.INodeDirectory | 
| FsImageProto.INodeSection.INodeDirectoryOrBuilder | 
| FsImageProto.INodeSection.INodeFile Protobuf type  hadoop.hdfs.fsimage.INodeSection.INodeFile | 
| FsImageProto.INodeSection.INodeFile.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.INodeFile | 
| FsImageProto.INodeSection.INodeFileOrBuilder | 
| FsImageProto.INodeSection.INodeOrBuilder | 
| FsImageProto.INodeSection.INodeSymlink Protobuf type  hadoop.hdfs.fsimage.INodeSection.INodeSymlink | 
| FsImageProto.INodeSection.INodeSymlink.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.INodeSymlink | 
| FsImageProto.INodeSection.INodeSymlinkOrBuilder | 
| FsImageProto.INodeSection.QuotaByStorageTypeEntryProto Protobuf type  hadoop.hdfs.fsimage.INodeSection.QuotaByStorageTypeEntryProto | 
| FsImageProto.INodeSection.QuotaByStorageTypeEntryProto.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.QuotaByStorageTypeEntryProto | 
| FsImageProto.INodeSection.QuotaByStorageTypeEntryProtoOrBuilder | 
| FsImageProto.INodeSection.QuotaByStorageTypeFeatureProto Protobuf type  hadoop.hdfs.fsimage.INodeSection.QuotaByStorageTypeFeatureProto | 
| FsImageProto.INodeSection.QuotaByStorageTypeFeatureProto.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.QuotaByStorageTypeFeatureProto | 
| FsImageProto.INodeSection.QuotaByStorageTypeFeatureProtoOrBuilder | 
| FsImageProto.INodeSection.XAttrCompactProto Protobuf type  hadoop.hdfs.fsimage.INodeSection.XAttrCompactProto | 
| FsImageProto.INodeSection.XAttrCompactProto.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.XAttrCompactProto | 
| FsImageProto.INodeSection.XAttrCompactProtoOrBuilder | 
| FsImageProto.INodeSection.XAttrFeatureProto Protobuf type  hadoop.hdfs.fsimage.INodeSection.XAttrFeatureProto | 
| FsImageProto.INodeSection.XAttrFeatureProto.Builder Protobuf type  hadoop.hdfs.fsimage.INodeSection.XAttrFeatureProto | 
| FsImageProto.INodeSection.XAttrFeatureProtoOrBuilder | 
| FsImageProto.INodeSectionOrBuilder | 
| FsImageProto.NameSystemSection 
 Name: NS_INFO | 
| FsImageProto.NameSystemSection.Builder 
 Name: NS_INFO | 
| FsImageProto.NameSystemSectionOrBuilder | 
| FsImageProto.SecretManagerSection Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection | 
| FsImageProto.SecretManagerSection.Builder Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection | 
| FsImageProto.SecretManagerSection.DelegationKey Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection.DelegationKey | 
| FsImageProto.SecretManagerSection.DelegationKey.Builder Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection.DelegationKey | 
| FsImageProto.SecretManagerSection.DelegationKeyOrBuilder | 
| FsImageProto.SecretManagerSection.PersistToken Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection.PersistToken | 
| FsImageProto.SecretManagerSection.PersistToken.Builder Protobuf type  hadoop.hdfs.fsimage.SecretManagerSection.PersistToken | 
| FsImageProto.SecretManagerSection.PersistTokenOrBuilder | 
| FsImageProto.SecretManagerSectionOrBuilder | 
| FsImageProto.SnapshotDiffSection 
 This section records information about snapshot diffs
 NAME: SNAPSHOT_DIFF | 
| FsImageProto.SnapshotDiffSection.Builder 
 This section records information about snapshot diffs
 NAME: SNAPSHOT_DIFF | 
| FsImageProto.SnapshotDiffSection.CreatedListEntry Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.CreatedListEntry | 
| FsImageProto.SnapshotDiffSection.CreatedListEntry.Builder Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.CreatedListEntry | 
| FsImageProto.SnapshotDiffSection.CreatedListEntryOrBuilder | 
| FsImageProto.SnapshotDiffSection.DiffEntry Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.DiffEntry | 
| FsImageProto.SnapshotDiffSection.DiffEntry.Builder Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.DiffEntry | 
| FsImageProto.SnapshotDiffSection.DiffEntry.Type Protobuf enum  hadoop.hdfs.fsimage.SnapshotDiffSection.DiffEntry.Type | 
| FsImageProto.SnapshotDiffSection.DiffEntryOrBuilder | 
| FsImageProto.SnapshotDiffSection.DirectoryDiff Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.DirectoryDiff | 
| FsImageProto.SnapshotDiffSection.DirectoryDiff.Builder Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.DirectoryDiff | 
| FsImageProto.SnapshotDiffSection.DirectoryDiffOrBuilder | 
| FsImageProto.SnapshotDiffSection.FileDiff Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.FileDiff | 
| FsImageProto.SnapshotDiffSection.FileDiff.Builder Protobuf type  hadoop.hdfs.fsimage.SnapshotDiffSection.FileDiff | 
| FsImageProto.SnapshotDiffSection.FileDiffOrBuilder | 
| FsImageProto.SnapshotDiffSectionOrBuilder | 
| FsImageProto.SnapshotSection 
 This section records the information about snapshot
 NAME: SNAPSHOT | 
| FsImageProto.SnapshotSection.Builder 
 This section records the information about snapshot
 NAME: SNAPSHOT | 
| FsImageProto.SnapshotSection.Snapshot Protobuf type  hadoop.hdfs.fsimage.SnapshotSection.Snapshot | 
| FsImageProto.SnapshotSection.Snapshot.Builder Protobuf type  hadoop.hdfs.fsimage.SnapshotSection.Snapshot | 
| FsImageProto.SnapshotSection.SnapshotOrBuilder | 
| FsImageProto.SnapshotSectionOrBuilder | 
| FsImageProto.StringTableSection 
 This section maps string to id
 NAME: STRING_TABLE | 
| FsImageProto.StringTableSection.Builder 
 This section maps string to id
 NAME: STRING_TABLE | 
| FsImageProto.StringTableSection.Entry Protobuf type  hadoop.hdfs.fsimage.StringTableSection.Entry | 
| FsImageProto.StringTableSection.Entry.Builder Protobuf type  hadoop.hdfs.fsimage.StringTableSection.Entry | 
| FsImageProto.StringTableSection.EntryOrBuilder | 
| FsImageProto.StringTableSectionOrBuilder | 
| HdfsAuditLogger Extension of  AuditLogger. | 
| INode.BlocksMapUpdateInfo Information used for updating the blocksMap when deleting files. | 
| INode.BlocksMapUpdateInfo.UpdatedReplicationInfo The blocks whose replication factor need to be updated. | 
| INode.Feature INode feature such as  FileUnderConstructionFeatureandDirectoryWithQuotaFeature. | 
| INode.QuotaDelta Information used to record quota usage delta. | 
| INode.ReclaimContext Context object to record blocks and inodes that need to be reclaimed | 
| INodeAttributeProvider | 
| INodeAttributeProvider.AccessControlEnforcer The AccessControlEnforcer allows implementations to override the
 default File System permission checking logic enforced on a file system
 object | 
| INodeAttributeProvider.AuthorizationContext | 
| INodeAttributeProvider.AuthorizationContext.Builder | 
| INodeAttributes.SnapshotCopy A read-only copy of the inode attributes. | 
| INodeDirectory Directory INode class. | 
| INodeDirectory.SnapshotAndINode A pair of Snapshot and INode objects. | 
| INodeDirectoryAttributes.SnapshotCopy A copy of the inode directory attributes | 
| INodeMap Storing all the  INodes and maintaining the mapping between INode ID
 and INode. | 
| INodeReference An anonymous reference to an inode. | 
| INodeReference.WithCount An anonymous reference with reference count. | 
| INodeReference.WithName A reference with a fixed name. | 
| INodesInPath Contains INodes information resolved from a given path. | 
| NameNode.OperationCategory Categories of operations supported by the namenode. | 
| NameNodeLayoutVersion.Feature Enums for features that change the layout version. | 
| NNStorage.NameNodeDirType Implementation of StorageDirType specific to namenode storage
 A Storage directory could be of type IMAGE which stores only fsimage,
 or of type EDITS which stores edits or of type IMAGE_AND_EDITS which
 stores both fsimage and edits. | 
| NNStorage.NameNodeFile The filenames used for storing the images. | 
| Quota Quota types. | 
| Quota.Counts Counters for quota counts. | 
| QuotaByStorageTypeEntry | 
| QuotaByStorageTypeEntry.Builder | 
| QuotaCounts Counters for namespace, storage space and storage type space quota and usage. | 
| QuotaCounts.Builder | 
| SerialNumberManager Manage name-to-serial-number maps for various string tables. | 
| SerialNumberManager.StringTable | 
| TransferFsImage.TransferResult | 
| XAttrFormat Class to pack XAttrs into byte[]. Note: this format is used both in-memory and on-disk. | 
| Class and Description | 
|---|
| FSImageFormat.Loader A one-shot class responsible for loading an image. | 
| FSImageFormatProtobuf.Loader | 
| FSImageFormatProtobuf.Saver | 
| FsImageProto.FileSummary.Builder Protobuf type  hadoop.hdfs.fsimage.FileSummary | 
| INode.BlocksMapUpdateInfo Information used for updating the blocksMap when deleting files. | 
| INode.ReclaimContext Context object to record blocks and inodes that need to be reclaimed | 
| INodeDirectory Directory INode class. | 
| INodeReference.WithCount An anonymous reference with reference count. | 
| INodesInPath Contains INodes information resolved from a given path. | 
| Class and Description | 
|---|
| FsImageProto.INodeSection.INode Protobuf type  hadoop.hdfs.fsimage.INodeSection.INode | 
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