org.apache.hadoop.fs

类 BlockLocation

java.lang.Object

org.apache.hadoop.fs.BlockLocation

所有已实现的接口:

Writable

public class BlockLocation
extends Object
implements Writable

构造器概要

构造器

构造器和说明
BlockLocation() Default Constructor
BlockLocation(String[] names, String[] hosts, long offset, long length) Constructor with host, name, offset and length
BlockLocation(String[] names, String[] hosts, String[] topologyPaths, long offset, long length) Constructor with host, name, network topology, offset and length

方法概要

方法

限定符和类型	方法和说明
String[]	getHosts() Get the list of hosts (hostname) hosting this block
long	getLength() Get the length of the block
String[]	getNames() Get the list of names (hostname:port) hosting this block
long	getOffset() Get the start offset of file associated with this block
String[]	getTopologyPaths() Get the list of network topology paths for each of the hosts.
void	readFields(DataInput in) Implement readFields of Writable
void	setHosts(String[] hosts) Set the hosts hosting this block
void	setLength(long length) Set the length of block
void	setNames(String[] names) Set the names (host:port) hosting this block
void	setOffset(long offset) Set the start offset of file associated with this block
void	setTopologyPaths(String[] topologyPaths) Set the network topology paths of the hosts
String	toString()
void	write(DataOutput out) Implement write of Writable

从类继承的方法 java.lang.Object

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

构造器详细资料

BlockLocation

public BlockLocation()

Default Constructor

BlockLocation

public BlockLocation(String[] names,
             String[] hosts,
             long offset,
             long length)

Constructor with host, name, offset and length

BlockLocation

public BlockLocation(String[] names,
             String[] hosts,
             String[] topologyPaths,
             long offset,
             long length)

Constructor with host, name, network topology, offset and length

方法详细资料

getHosts

public String[] getHosts()
                  throws IOException

Get the list of hosts (hostname) hosting this block

抛出:

IOException

getNames

public String[] getNames()
                  throws IOException

Get the list of names (hostname:port) hosting this block

抛出:

IOException

getTopologyPaths

public String[] getTopologyPaths()
                          throws IOException

Get the list of network topology paths for each of the hosts. The last component of the path is the host.

抛出:

IOException

getOffset

public long getOffset()

Get the start offset of file associated with this block

getLength

public long getLength()

Get the length of the block

setOffset

public void setOffset(long offset)

Set the start offset of file associated with this block

setLength

public void setLength(long length)

Set the length of block

setHosts

public void setHosts(String[] hosts)
              throws IOException

Set the hosts hosting this block

抛出:

IOException

setNames

public void setNames(String[] names)
              throws IOException

Set the names (host:port) hosting this block

抛出:

IOException

setTopologyPaths

public void setTopologyPaths(String[] topologyPaths)
                      throws IOException

Set the network topology paths of the hosts

抛出:

IOException

write

public void write(DataOutput out)
           throws IOException

Implement write of Writable

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

Implement readFields of Writable

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException

toString

public String toString()

覆盖:

toString 在类中 Object