com.asakusafw.runtime.directio.hadoop

Class BlockInfo

java.lang.Object

com.asakusafw.runtime.directio.hadoop.BlockInfo

public final class BlockInfo
extends Object

Block information.

Since:

0.2.5

Constructor Summary

Constructors

Constructor and Description
BlockInfo(long start, long end, String[] hosts) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
long	getEnd() Returns the end byte position of this block in the file.
List<String>	getHosts() Returns the host names.
long	getStart() Returns the start byte position of this block in the file.
boolean	isSameOwner(BlockInfo other) Returns whether this and the other block has same owner(s).
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockInfo

public BlockInfo(long start,
                 long end,
                 String[] hosts)

Creates a new instance.

Parameters:

start - start byte position (inclusive)

end - end byte position (exclusive)

hosts - host names, or null for empty

Method Detail

getStart

public long getStart()

Returns the start byte position of this block in the file.

Returns:

start byte position (inclusive)

Since:

0.7.0

getEnd

public long getEnd()

Returns the end byte position of this block in the file.

Returns:

end byte position (exclusive)

Since:

0.7.0

getHosts

public List<String> getHosts()

Returns the host names.

Returns:

the host names

Since:

0.7.0

isSameOwner

public boolean isSameOwner(BlockInfo other)

Returns whether this and the other block has same owner(s). If both has no owners, this returns true.

Parameters:

other - the other block

Returns:

true if the both has same owner, otherwise false

Throws:

IllegalArgumentException - if some parameters were null

toString

public String toString()

Overrides:

toString in class Object