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

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

Package	Description
org.apache.hadoop.contrib.bkjournal
org.apache.hadoop.hdfs.protocol
org.apache.hadoop.hdfs.protocolPB
org.apache.hadoop.hdfs.qjournal.client
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.protocol
org.apache.hadoop.hdfs.tools.offlineEditsViewer
org.apache.hadoop.hdfs.web.resources

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

Class and 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.protocol

Class and Description
NotReplicatedYetException The file has not finished being written to enough datanodes yet.
SafeModeException This exception is thrown when the name node is in safe mode.

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

Class and Description
CheckpointSignature A unique signature intended to identify checkpoint transactions.
NotReplicatedYetException The file has not finished being written to enough datanodes yet.
SafeModeException This exception is thrown when the name node is in safe mode.

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

Class and 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.security.token.delegation

Class and Description
FSNamesystem FSNamesystem does the actual bookkeeping work for the DataNode.
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 and Description
FSClusterStats This interface is used for retrieving the load related statistics of the cluster.
Namesystem Namesystem operations.

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

Class and 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 and Description
AuditLogger Interface defining an audit logger.
CheckpointSignature A unique signature intended to identify checkpoint transactions.
Content The content types such as file, directory and symlink to be computed.
Content.Counts Content counts.
Content.CountsMap.Key The key type of the map.
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.
FileJournalManager.EditLogFile Record of an edit log that has been located and had its filename parsed.
FSClusterStats This interface is used for retrieving the load related statistics of the cluster.
FSDirectory FSDirectory stores the filesystem directory state.
FSEditLog FSEditLog maintains a log of the namespace modifications.
FSEditLogOp Helper classes for reading the ops from an InputStream.
FSEditLogOpCodes Op codes for edits file
FSImage FSImage handles checkpointing and logging of the namespace edits.
FSNamesystem FSNamesystem does the actual bookkeeping work for the DataNode.
HostFileManager.Entry
HostFileManager.EntrySet
INode We keep an in-memory representation of the file/block hierarchy.
INode.BlocksMapUpdateInfo Information used for updating the blocksMap when deleting files.
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
INodeDirectoryWithQuota Directory INode class that has a quota restriction
INodeFile I-node for closed file.
INodeFileAttributes The attributes of a file.
INodeFileUnderConstruction I-node for file being written.
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.
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.
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.
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.
Namesystem Namesystem operations.
NNStorage NNStorage is responsible for management of the StorageDirectories used by the NameNode.
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.
SafeMode SafeMode related operations.

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

Class and Description
FSNamesystem FSNamesystem does the actual bookkeeping work for the DataNode.
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 and Description
Content.Counts Content counts.
FSDirectory FSDirectory stores the filesystem directory state.
FSImageFormat.Loader A one-shot class responsible for loading an image.
INode We keep an in-memory representation of the file/block hierarchy.
INode.BlocksMapUpdateInfo Information used for updating the blocksMap when deleting files.
INodeAttributes The attributes of an inode.
INodeDirectory Directory INode class.
INodeDirectoryAttributes The attributes of an inode.
INodeDirectoryWithQuota Directory INode class that has a quota restriction
INodeFile I-node for closed file.
INodeFileAttributes The attributes of a file.
INodeFileUnderConstruction I-node for file being written.
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.
INodeWithAdditionalFields INode with additional fields including id, name, permission, access time and modification time.
Quota.Counts Counters for quota counts.

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

Class and 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 and 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.web.resources

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