org.apache.nutch.ndfs
Class DatanodeInfo

java.lang.Object
  org.apache.nutch.ndfs.DatanodeInfo

All Implemented Interfaces:

Comparable, Writable

public class DatanodeInfo

extends Object

implements Writable, Comparable

DatanodeInfo tracks stats on a given node

Author:

Mike Cafarella

Constructor Summary

DatanodeInfo()

DatanodeInfo(UTF8 name)

DatanodeInfo(UTF8 name, long capacity, long remaining)

Method Summary

void	addBlock(Block b)
int	compareTo(Object o)
Iterator	getBlockIterator()
Block[]	getBlocks()
long	getCapacity()
UTF8	getHost()
UTF8	getName()
long	getRemaining()
long	lastObsoleteCheck()
long	lastUpdate()
void	readFields(DataInput in) Reads the fields of this object from in.
String	toString()
void	updateBlocks(Block[] newBlocks)
void	updateHeartbeat(long capacity, long remaining)
void	updateObsoleteCheck()
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatanodeInfo

public DatanodeInfo()

DatanodeInfo

public DatanodeInfo(UTF8 name)

DatanodeInfo

public DatanodeInfo(UTF8 name,
                    long capacity,
                    long remaining)

Method Detail

updateBlocks

public void updateBlocks(Block[] newBlocks)

addBlock

public void addBlock(Block b)

updateHeartbeat

public void updateHeartbeat(long capacity,
                            long remaining)

getName

public UTF8 getName()

getHost

public UTF8 getHost()

toString

public String toString()

getBlocks

public Block[] getBlocks()

getBlockIterator

public Iterator getBlockIterator()

getCapacity

public long getCapacity()

getRemaining

public long getRemaining()

lastUpdate

public long lastUpdate()

updateObsoleteCheck

public void updateObsoleteCheck()

lastObsoleteCheck

public long lastObsoleteCheck()

compareTo

public int compareTo(Object o)

Specified by:

compareTo in interface Comparable

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException