Package org.apache.hadoop.io.erasurecode.coder

Class HHErasureCodingStep

java.lang.Object

org.apache.hadoop.io.erasurecode.coder.HHErasureCodingStep

All Implemented Interfaces:

ErasureCodingStep

Direct Known Subclasses:

HHXORErasureDecodingStep, HHXORErasureEncodingStep

@Private
public abstract class HHErasureCodingStep
extends java.lang.Object
implements ErasureCodingStep

Abstract class for Hitchhiker common facilities shared by HHXORErasureEncodingStepand HHXORErasureDecodingStep. It implements ErasureCodingStep.

Constructor Summary

Constructors

Constructor	Description
HHErasureCodingStep(ECBlock[] inputBlocks, ECBlock[] outputBlocks)	Constructor given input blocks and output blocks.

Method Summary

Modifier and Type	Method	Description
void	finish()	Notify erasure coder that all the chunks of input blocks are processed so the coder can be able to update internal states, considering next step.
ECBlock[]	getInputBlocks()	Input blocks of readable data involved in this step, may be data blocks or parity blocks.
ECBlock[]	getOutputBlocks()	Output blocks of writable buffers involved in this step, may be data blocks or parity blocks.
protected int	getSubPacketSize()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.io.erasurecode.coder.ErasureCodingStep

performCoding

Constructor Detail

HHErasureCodingStep

public HHErasureCodingStep(ECBlock[] inputBlocks,
                           ECBlock[] outputBlocks)

Constructor given input blocks and output blocks.

Parameters:

inputBlocks - inputBlocks.

outputBlocks - outputBlocks.

Method Detail

getSubPacketSize

protected int getSubPacketSize()

getInputBlocks

public ECBlock[] getInputBlocks()

Description copied from interface: ErasureCodingStep

Input blocks of readable data involved in this step, may be data blocks or parity blocks.

Specified by:

getInputBlocks in interface ErasureCodingStep

Returns:

input blocks

getOutputBlocks

public ECBlock[] getOutputBlocks()

Description copied from interface: ErasureCodingStep

Output blocks of writable buffers involved in this step, may be data blocks or parity blocks.

Specified by:

getOutputBlocks in interface ErasureCodingStep

Returns:

output blocks

finish

public void finish()

Description copied from interface: ErasureCodingStep

Notify erasure coder that all the chunks of input blocks are processed so the coder can be able to update internal states, considering next step.

Specified by:

finish in interface ErasureCodingStep