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.
|
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.
|
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.
|
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.
|
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.
|
Class and Description |
---|
FSClusterStats
This interface is used for retrieving the load related statistics of
the cluster.
|
Namesystem
Namesystem operations.
|
Class and Description |
---|
MetaRecoveryContext
Context data for an ongoing NameNode metadata recovery process.
|
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
INode s 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 |
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.
|
Class and Description |
---|
FSNamesystem
FSNamesystem does the actual bookkeeping work for the
DataNode.
|
NameNode.OperationCategory
Categories of operations supported by the namenode.
|
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
INode s 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.
|
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.
|
Class and Description |
---|
FSEditLogOp
Helper classes for reading the ops from an InputStream.
|
FSEditLogOpCodes
Op codes for edits file
|
Class and Description |
---|
NameNode
NameNode serves as both directory namespace manager and
"inode table" for the Hadoop DFS.
|
Copyright © 2013 Apache Software Foundation. All rights reserved.