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

Class RSErasureDecoder

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.io.erasurecode.coder.ErasureDecoder

org.apache.hadoop.io.erasurecode.coder.RSErasureDecoder

All Implemented Interfaces:

Configurable, ErasureCoder

@Private
public class RSErasureDecoder
extends ErasureDecoder

Reed-Solomon erasure decoder that decodes a block group. It implements ErasureCoder.

Constructor Summary

Constructors

Constructor	Description
RSErasureDecoder(ErasureCoderOptions options)

Method Summary

Modifier and Type	Method	Description
protected ErasureCodingStep	prepareDecodingStep(ECBlockGroup blockGroup)	Perform decoding against a block blockGroup.
void	release()	Release the resources if any.

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

calculateCoding, getErasedIndexes, getInputBlocks, getNumDataUnits, getNumErasedBlocks, getNumErasedBlocks, getNumParityUnits, getOptions, getOutputBlocks, preferDirectBuffer

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

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.conf.Configurable

getConf, setConf

Constructor Detail

RSErasureDecoder

public RSErasureDecoder(ErasureCoderOptions options)

Method Detail

prepareDecodingStep

protected ErasureCodingStep prepareDecodingStep(ECBlockGroup blockGroup)

Description copied from class: ErasureDecoder

Perform decoding against a block blockGroup.

Specified by:

prepareDecodingStep in class ErasureDecoder

Parameters:

blockGroup - blockGroup.

Returns:

decoding step for caller to do the real work

release

public void release()

Description copied from interface: ErasureCoder

Release the resources if any. Good chance to invoke RawErasureCoder#release.

Specified by:

release in interface ErasureCoder

Overrides:

release in class ErasureDecoder