org.apache.hadoop.hdfs.server.namenode

Class INode

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.INode

All Implemented Interfaces:

Comparable<byte[]>, org.apache.hadoop.hdfs.server.namenode.FSInodeInfo

Direct Known Subclasses:

INodeFile

public abstract class INode
extends Object
implements Comparable<byte[]>, org.apache.hadoop.hdfs.server.namenode.FSInodeInfo

We keep an in-memory representation of the file/block hierarchy. This is a base INode class containing common fields for file and directory inodes.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	accessTime
protected long	modificationTime
protected byte[]	name
protected org.apache.hadoop.hdfs.server.namenode.INodeDirectory	parent

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	INode()
protected	INode(String name, org.apache.hadoop.fs.permission.PermissionStatus permissions)

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(byte[] o)
org.apache.hadoop.fs.ContentSummary	computeAndConvertContentSummary(org.apache.hadoop.hdfs.server.namenode.ContentSummaryComputationContext summary) Compute ContentSummary
org.apache.hadoop.fs.ContentSummary	computeContentSummary() Compute ContentSummary.
boolean	equals(Object o)
long	getAccessTime() Get access time of inode.
org.apache.hadoop.fs.permission.FsPermission	getFsPermission() Get the FsPermission
protected short	getFsPermissionShort()
String	getFullPathName() a string representation of an inode
String	getGroupName() Get group name
long	getModificationTime() Get last modification time of inode.
protected org.apache.hadoop.fs.permission.PermissionStatus	getPermissionStatus() Get the PermissionStatus
String	getUserName() Get user name
int	hashCode()
abstract boolean	isDirectory() Check whether it's a directory
boolean	isLink() Check whether it's a symlink
boolean	isUnderConstruction() Is this inode being constructed?
protected void	setGroup(String group) Set group
protected void	setPermission(org.apache.hadoop.fs.permission.FsPermission permission) Set the FsPermission of this INode
protected void	setPermissionStatus(org.apache.hadoop.fs.permission.PermissionStatus ps) Set the PermissionStatus
protected void	setUser(String user) Set user
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

name

protected byte[] name

parent

protected org.apache.hadoop.hdfs.server.namenode.INodeDirectory parent

modificationTime

protected long modificationTime

accessTime

protected long accessTime

Constructor Detail

INode

protected INode()

INode

protected INode(String name,
     org.apache.hadoop.fs.permission.PermissionStatus permissions)

Method Detail

setPermissionStatus

protected void setPermissionStatus(org.apache.hadoop.fs.permission.PermissionStatus ps)

Set the PermissionStatus

getPermissionStatus

protected org.apache.hadoop.fs.permission.PermissionStatus getPermissionStatus()

Get the PermissionStatus

getUserName

public String getUserName()

Get user name

setUser

protected void setUser(String user)

Set user

getGroupName

public String getGroupName()

Get group name

setGroup

protected void setGroup(String group)

Set group

getFsPermission

public org.apache.hadoop.fs.permission.FsPermission getFsPermission()

Get the FsPermission

getFsPermissionShort

protected short getFsPermissionShort()

setPermission

protected void setPermission(org.apache.hadoop.fs.permission.FsPermission permission)

Set the FsPermission of this INode

isDirectory

public abstract boolean isDirectory()

Check whether it's a directory

computeContentSummary

public final org.apache.hadoop.fs.ContentSummary computeContentSummary()

Compute ContentSummary. Blocking computation.

computeAndConvertContentSummary

public final org.apache.hadoop.fs.ContentSummary computeAndConvertContentSummary(org.apache.hadoop.hdfs.server.namenode.ContentSummaryComputationContext summary)

Compute ContentSummary

getFullPathName

public String getFullPathName()

a string representation of an inode

Specified by:

getFullPathName in interface org.apache.hadoop.hdfs.server.namenode.FSInodeInfo

Returns:

the full pathname (from root) that this inode represents

toString

public String toString()

Overrides:

toString in class Object

getModificationTime

public long getModificationTime()

Get last modification time of inode.

Returns:

access time

getAccessTime

public long getAccessTime()

Get access time of inode.

Returns:

access time

isUnderConstruction

public boolean isUnderConstruction()

Is this inode being constructed?

isLink

public boolean isLink()

Check whether it's a symlink

compareTo

public int compareTo(byte[] o)

Specified by:

compareTo in interface Comparable<byte[]>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object