org.apache.hadoop.hdfs.protocol

类 LocatedBlocks

java.lang.Object

org.apache.hadoop.hdfs.protocol.LocatedBlocks

所有已实现的接口:

Writable

public class LocatedBlocks
extends Object
implements Writable

Collection of blocks with their locations and the file length.

构造器概要

构造器

构造器和说明
LocatedBlocks(long flength, List<LocatedBlock> blks, boolean isUnderConstuction)

方法概要

方法

限定符和类型	方法和说明
int	findBlock(long offset) Find block containing specified offset.
LocatedBlock	get(int index) Get located block.
long	getFileLength()
static int	getInsertIndex(int binSearchResult)
List<LocatedBlock>	getLocatedBlocks() Get located blocks.
void	insertRange(int blockIdx, List<LocatedBlock> newBlocks)
boolean	isUnderConstruction() Return ture if file was under construction when this LocatedBlocks was constructed, false otherwise.
int	locatedBlockCount() Get number of located blocks.
void	readFields(DataInput in) Deserialize the fields of this object from in.
void	setFileLength(long length) Sets the file length of the file.
void	write(DataOutput out) Serialize the fields of this object to out.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

LocatedBlocks

public LocatedBlocks(long flength,
             List<LocatedBlock> blks,
             boolean isUnderConstuction)

方法详细资料

getLocatedBlocks

public List<LocatedBlock> getLocatedBlocks()

Get located blocks.

get

public LocatedBlock get(int index)

Get located block.

locatedBlockCount

public int locatedBlockCount()

Get number of located blocks.

getFileLength

public long getFileLength()

isUnderConstruction

public boolean isUnderConstruction()

Return ture if file was under construction when this LocatedBlocks was constructed, false otherwise.

setFileLength

public void setFileLength(long length)

Sets the file length of the file.

findBlock

public int findBlock(long offset)

Find block containing specified offset.

返回:

block if found, or null otherwise.

insertRange

public void insertRange(int blockIdx,
               List<LocatedBlock> newBlocks)

getInsertIndex

public static int getInsertIndex(int binSearchResult)

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException