Uses of Package
org.apache.hadoop.hdfs.server.namenode

Packages that use org.apache.hadoop.hdfs.server.namenode

Package	Description
org.apache.hadoop.hdfs	A distributed implementation of FileSystem.
org.apache.hadoop.hdfs.protocol
org.apache.hadoop.hdfs.protocolPB	Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
org.apache.hadoop.hdfs.qjournal.client
org.apache.hadoop.hdfs.qjournal.server
org.apache.hadoop.hdfs.security.token.delegation
org.apache.hadoop.hdfs.server.blockmanagement
org.apache.hadoop.hdfs.server.common
org.apache.hadoop.hdfs.server.namenode
org.apache.hadoop.hdfs.server.namenode.ha
org.apache.hadoop.hdfs.server.namenode.snapshot
org.apache.hadoop.hdfs.server.namenode.sps	This package provides a mechanism for satisfying the storage policy of a path.
org.apache.hadoop.hdfs.server.namenode.top
org.apache.hadoop.hdfs.server.namenode.visitor	Use the visitor pattern to visit namespace tree.
org.apache.hadoop.hdfs.server.protocol
org.apache.hadoop.hdfs.tools.offlineEditsViewer
org.apache.hadoop.hdfs.tools.offlineImageViewer
org.apache.hadoop.hdfs.web.resources

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs

Class	Description
FSDirectory	Both FSDirectory and FSNamesystem manage the state of the namespace.
INodesInPath	Contains INodes information resolved from a given path.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.protocol

Class	Description
CachePool	A CachePool describes a set of cache resources being managed by the NameNode.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.protocolPB

Class	Description
CheckpointSignature	A unique signature intended to identify checkpoint transactions.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.qjournal.client

Class	Description
EditLogInputStream	A generic abstract class to support reading edits log data from persistent storage.
EditLogOutputStream	A generic abstract class to support journaling of edits logs into a persistent storage.
JournalManager	A JournalManager is responsible for managing a single place of storing edit logs.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.qjournal.server

Class	Description
DfsServlet	A base class for the servlets in DFS.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.security.token.delegation

Class	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
FSNamesystem	FSNamesystem is a container of both transient and persisted name-space state, and does all the book-keeping work on a NameNode.
NameNode	NameNode serves as both directory namespace manager and "inode table" for the Hadoop DFS.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.blockmanagement

Class	Description
CacheManager	The Cache Manager handles caching on DataNodes.
FSNamesystem	FSNamesystem is a container of both transient and persisted name-space state, and does all the book-keeping work on a NameNode.
INode.BlocksMapUpdateInfo	Information used for updating the blocksMap when deleting files.
INodesInPath	Contains INodes information resolved from a given path.
Namesystem	Namesystem operations.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.common

Class	Description
MetaRecoveryContext	Context data for an ongoing NameNode metadata recovery process.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode

Class	Description
AclEntryStatusFormat	Class to pack an AclEntry into an integer.
AclFeature	Feature that represents the ACLs of the inode.
AuditLogger	Interface defining an audit logger.
CachedBlock	Represents a cached block.
CacheManager	The Cache Manager handles caching on DataNodes.
CacheManager.PersistState
CachePool	A CachePool describes a set of cache resources being managed by the NameNode.
CachePool.DirectiveList
CheckpointFaultInjector	Utility class to faciliate some fault injection tests for the checkpointing process.
CheckpointSignature	A unique signature intended to identify checkpoint transactions.
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
ContentSummaryComputationContext
DfsServlet	A base class for the servlets in DFS.
DirectoryWithQuotaFeature	Quota feature for INodeDirectory.
DirectoryWithQuotaFeature.Builder
EditLogInputStream	A generic abstract class to support reading edits log data from persistent storage.
EditLogOutputStream	A generic abstract class to support journaling of edits logs into a persistent storage.
EncryptionFaultInjector	Used to inject certain faults for testing.
EncryptionZoneManager	Manages the list of encryption zones in the filesystem.
ErasureCodingPolicyManager	This manages erasure coding policies predefined and activated in the system.
FileJournalManager.EditLogFile	Record of an edit log that has been located and had its filename parsed.
FileUnderConstructionFeature	Feature for under-construction file.
FSDirectory	Both FSDirectory and FSNamesystem manage the state of the namespace.
FSDirectory.DirOp
FSEditLog	FSEditLog maintains a log of the namespace modifications.
FSEditLogOp	Helper classes for reading the ops from an InputStream.
FSEditLogOp.OpInstanceCache
FSEditLogOp.Reader	Class for reading editlog ops from a stream
FSEditLogOpCodes	Op codes for edits file
FSImage	FSImage handles checkpointing and logging of the namespace edits.
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
FSNamesystem	FSNamesystem is a container of both transient and persisted name-space state, and does all the book-keeping work on a NameNode.
FSPermissionChecker	Class that helps in checking file system permission.
FSTreeTraverser.TraverseInfo	Class will represent the additional info required for traverse.
HdfsAuditLogger	Extension of AuditLogger.
INode	We keep an in-memory representation of the file/block hierarchy.
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 FileUnderConstructionFeature and DirectoryWithQuotaFeature.
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	The attributes of an inode.
INodeAttributes.SnapshotCopy	A read-only copy of the inode attributes.
INodeDirectory	Directory INode class.
INodeDirectory.SnapshotAndINode	A pair of Snapshot and INode objects.
INodeDirectoryAttributes	The attributes of an inode.
INodeDirectoryAttributes.SnapshotCopy	A copy of the inode directory attributes
INodeFile	I-node for closed file.
INodeFileAttributes	The attributes of a file.
INodeMap	Storing all the INodes and maintaining the mapping between INode ID and INode.
INodeReference	A 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.
INodeSymlink	An INode representing a symbolic link.
INodeWithAdditionalFields	INode with additional fields including id, name, permission, access time and modification time.
JournalManager	A JournalManager is responsible for managing a single place of storing edit logs.
JournalSet	Manages a collection of Journals.
LeaseManager	LeaseManager does the lease housekeeping for writing on files.
MetaRecoveryContext	Context data for an ongoing NameNode metadata recovery process.
MetaRecoveryContext.RequestStopException	Exception thrown when the user has requested processing to stop.
NameNode	NameNode serves as both directory namespace manager and "inode table" for the Hadoop DFS.
NameNode.NameNodeHAContext	Class used to expose NameNode as context to HAState
NameNode.OperationCategory	Categories of operations supported by the namenode.
NameNodeHttpServer	Encapsulates the HTTP server started by the NameNode.
NameNodeLayoutVersion.Feature	Enums for features that change the layout version.
NameNodeMXBean	This is the JMX management interface for namenode information.
NameNodeResourceChecker	NameNodeResourceChecker provides a method - hasAvailableDiskSpace - which will return true if and only if the NameNode has disk space available on all required volumes, and any volume which is configured to be redundant.
NameNodeRpcServer	This class is responsible for handling all of the RPC calls to the NameNode.
NameNodeStatusMXBean	This is the JMX management interface for NameNode status information.
Namesystem	Namesystem operations.
NetworkTopologyServlet.BadFormatException
NNStorage	NNStorage is responsible for management of the StorageDirectories used by the NameNode.
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.
NNStorageRetentionManager	The NNStorageRetentionManager is responsible for inspecting the storage directories of the NN and enforcing a retention policy on checkpoints and edit logs.
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
SafeMode	SafeMode related operations.
SaveNamespaceCancelledException
SaveNamespaceContext	Context for an ongoing SaveNamespace operation.
SecondaryNameNodeInfoMXBean	JMX information of the secondary NameNode
SerialNumberManager	Manage name-to-serial-number maps for various string tables.
SerialNumberManager.StringTable
TransferFsImage.TransferResult
UnsupportedActionException	This exception is thrown when an operation is not supported.
VersionInfoMXBean
XAttrFeature	Feature for extended attributes.
XAttrFormat	Class to pack XAttrs into byte[]. Note: this format is used both in-memory and on-disk.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode.ha

Class	Description
FSEditLog	FSEditLog maintains a log of the namespace modifications.
FSNamesystem	FSNamesystem is a container of both transient and persisted name-space state, and does all the book-keeping work on a NameNode.
NameNode.OperationCategory	Categories of operations supported by the namenode.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode.snapshot

Class	Description
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.
ContentSummaryComputationContext
FSDirectory	Both FSDirectory and FSNamesystem manage the state of the namespace.
FSImageFormat.Loader	A one-shot class responsible for loading an image.
FSImageFormatProtobuf.Loader
FSImageFormatProtobuf.Saver
FsImageProto.FileSummary.Builder	Protobuf type hadoop.hdfs.fsimage.FileSummary
FSNamesystem	FSNamesystem is a container of both transient and persisted name-space state, and does all the book-keeping work on a NameNode.
INode	We keep an in-memory representation of the file/block hierarchy.
INode.BlocksMapUpdateInfo	Information used for updating the blocksMap when deleting files.
INode.Feature	INode feature such as FileUnderConstructionFeature and DirectoryWithQuotaFeature.
INode.ReclaimContext	Context object to record blocks and inodes that need to be reclaimed
INodeAttributes	The attributes of an inode.
INodeDirectory	Directory INode class.
INodeDirectoryAttributes	The attributes of an inode.
INodeFile	I-node for closed file.
INodeFileAttributes	The attributes of a file.
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.
INodeWithAdditionalFields	INode with additional fields including id, name, permission, access time and modification time.
LeaseManager	LeaseManager does the lease housekeeping for writing on files.
QuotaCounts	Counters for namespace, storage space and storage type space quota and usage.
SaveNamespaceContext	Context for an ongoing SaveNamespace operation.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode.sps

Class	Description
Namesystem	Namesystem operations.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode.top

Class	Description
AuditLogger	Interface defining an audit logger.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode.visitor

Class	Description
FSNamesystem	FSNamesystem is a container of both transient and persisted name-space state, and does all the book-keeping work on a NameNode.
INode	We keep an in-memory representation of the file/block hierarchy.
INodeDirectory	Directory INode class.
INodeFile	I-node for closed file.
INodeReference	A reference to an inode.
INodeSymlink	An INode representing a symbolic link.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.protocol

Class	Description
CheckpointSignature	A unique signature intended to identify checkpoint transactions.
NNStorage	NNStorage is responsible for management of the StorageDirectories used by the NameNode.

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.tools.offlineEditsViewer

Class	Description
FSEditLogOp	Helper classes for reading the ops from an InputStream.
FSEditLogOpCodes	Op codes for edits file

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.tools.offlineImageViewer

Class	Description
FsImageProto.INodeSection.INode	Protobuf type hadoop.hdfs.fsimage.INodeSection.INode

Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.web.resources

Class	Description
NameNode	NameNode serves as both directory namespace manager and "inode table" for the Hadoop DFS.