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

Class HHXORErasureEncodingStep

java.lang.Object

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

org.apache.hadoop.io.erasurecode.coder.HHXORErasureEncodingStep

All Implemented Interfaces:

ErasureCodingStep

@Private
public class HHXORErasureEncodingStep
extends HHErasureCodingStep

Hitchhiker-XOR Erasure encoding step, a wrapper of all the necessary information to perform an encoding step involved in the whole process of encoding a block group.

Constructor Summary

Constructors

Constructor	Description
HHXORErasureEncodingStep(ECBlock[] inputBlocks, ECBlock[] outputBlocks, RawErasureEncoder rsRawEncoder, RawErasureEncoder xorRawEncoder)	The constructor with all the necessary info.

Method Summary

Modifier and Type	Method	Description
void	performCoding(ECChunk[] inputChunks, ECChunk[] outputChunks)	Perform encoding or decoding given the input chunks, and generated results will be written to the output chunks.

Methods inherited from class org.apache.hadoop.io.erasurecode.coder.HHErasureCodingStep

finish, getInputBlocks, getOutputBlocks, getSubPacketSize

Methods inherited from class java.lang.Object

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

Constructor Detail

HHXORErasureEncodingStep

public HHXORErasureEncodingStep(ECBlock[] inputBlocks,
                                ECBlock[] outputBlocks,
                                RawErasureEncoder rsRawEncoder,
                                RawErasureEncoder xorRawEncoder)

The constructor with all the necessary info.

Parameters:

inputBlocks - inputBlocks.

outputBlocks - outputBlocks.

rsRawEncoder - underlying RS encoder for hitchhiker encoding

xorRawEncoder - underlying XOR encoder for hitchhiker encoding

Method Detail

performCoding

public void performCoding(ECChunk[] inputChunks,
                          ECChunk[] outputChunks)
                   throws java.io.IOException

Description copied from interface: ErasureCodingStep

Perform encoding or decoding given the input chunks, and generated results will be written to the output chunks.

Parameters:

inputChunks - inputChunks.

outputChunks - outputChunks.

Throws:

java.io.IOException - raised on errors performing I/O.