org.apache.hadoop.hdfs.server.namenode
Class INodeFile

java.lang.Object
  org.apache.hadoop.hdfs.server.namenode.INode
      org.apache.hadoop.hdfs.server.namenode.INodeFile

All Implemented Interfaces:

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

Direct Known Subclasses:

INodeFileUnderConstruction

public class INodeFile
extends INode

I-node for closed file.

Field Summary

protected BlockInfo[]	blocks
protected long	header

Fields inherited from class org.apache.hadoop.hdfs.server.namenode.INode

accessTime, modificationTime, name, parent

Constructor Summary

protected	INodeFile()
protected	INodeFile(org.apache.hadoop.fs.permission.PermissionStatus permissions, BlockInfo[] blklist, short replication, long modificationTime, long atime, long preferredBlockSize)

Method Summary

BlockInfo[]	getBlocks() Get file blocks
<T extends BlockInfo> T	getLastBlock() Get the last block of the file.
long	getPreferredBlockSize() Get preferred block size for the file
short	getReplication() Get block replication for the file
boolean	isDirectory() Check whether it's a directory
int	numBlocks()
void	setBlock(int idx, BlockInfo blk) Set file block
protected void	setPermission(org.apache.hadoop.fs.permission.FsPermission permission) Set the FsPermission of this INodeFile.
void	setPreferredBlockSize(long preferredBlkSize)
void	setReplication(short replication)

Methods inherited from class org.apache.hadoop.hdfs.server.namenode.INode

compareTo, computeContentSummary, equals, getAccessTime, getFsPermission, getFsPermissionShort, getFullPathName, getGroupName, getModificationTime, getPermissionStatus, getUserName, hashCode, isLink, isUnderConstruction, setGroup, setPermissionStatus, setUser, toString

Methods inherited from class java.lang.Object

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

Field Detail

header

protected long header

blocks

protected BlockInfo[] blocks

Constructor Detail

INodeFile

protected INodeFile()

INodeFile

protected INodeFile(org.apache.hadoop.fs.permission.PermissionStatus permissions,
                    BlockInfo[] blklist,
                    short replication,
                    long modificationTime,
                    long atime,
                    long preferredBlockSize)

Method Detail

setPermission

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

Set the FsPermission of this INodeFile. Since this is a file, the FsAction.EXECUTE action, if any, is ignored.

Overrides:

setPermission in class INode

isDirectory

public boolean isDirectory()

Description copied from class: INode

Check whether it's a directory

Specified by:

isDirectory in class INode

getReplication

public short getReplication()

Get block replication for the file

Returns:

block replication value

setReplication

public void setReplication(short replication)

getPreferredBlockSize

public long getPreferredBlockSize()

Get preferred block size for the file

Returns:

preferred block size in bytes

setPreferredBlockSize

public void setPreferredBlockSize(long preferredBlkSize)

getBlocks

public BlockInfo[] getBlocks()

Get file blocks

Returns:

file blocks

setBlock

public void setBlock(int idx,
                     BlockInfo blk)

Set file block

getLastBlock

public <T extends BlockInfo> T getLastBlock()
                                 throws IOException

Get the last block of the file. Make sure it has the right type.

Throws:

IOException

numBlocks

public int numBlocks()

Returns:

the number of blocks