edu.iu.dsc.tws.api.data

Interface BlockLocation

All Superinterfaces:

java.lang.Comparable<BlockLocation>

All Known Implementing Classes:

HadoopBlockLocation, LocalBlockLocation

public interface BlockLocation
extends java.lang.Comparable<BlockLocation>

A BlockLocation lists hosts, offset and length of block.

Method Summary

Modifier and Type	Method and Description
java.lang.String[]	getHosts() Get the list of hosts (hostname) hosting this block.
long	getLength() Get the length of the block.
long	getOffset() Get the start offset of the file associated with this block.

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

getHosts

java.lang.String[] getHosts()
                     throws java.io.IOException

Get the list of hosts (hostname) hosting this block.

Returns:

A list of hosts (hostname) hosting this block.

Throws:

java.io.IOException - thrown if the list of hosts could not be retrieved

getOffset

long getOffset()

Get the start offset of the file associated with this block.

Returns:

The start offset of the file associated with this block.

getLength

long getLength()

Get the length of the block.

Returns:

the length of the block