Package org.apache.hadoop.io.erasurecode.rawcoder

Class DummyRawEncoder

java.lang.Object

org.apache.hadoop.io.erasurecode.rawcoder.RawErasureEncoder

org.apache.hadoop.io.erasurecode.rawcoder.DummyRawEncoder

@Private
public class DummyRawEncoder
extends RawErasureEncoder

A dummy raw encoder that does no real computation. Instead, it just returns zero bytes. This encoder can be used to isolate the performance issue to HDFS side logic instead of codec, and is intended for test only.

Constructor Summary

Constructors

Constructor	Description
DummyRawEncoder(ErasureCoderOptions coderOptions)

Method Summary

Modifier and Type	Method	Description
protected void	doEncode(org.apache.hadoop.io.erasurecode.rawcoder.ByteArrayEncodingState encodingState)	Perform the real encoding work using bytes array, supporting offsets and lengths.
protected void	doEncode(org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferEncodingState encodingState)	Perform the real encoding work using direct ByteBuffer.

Methods inherited from class org.apache.hadoop.io.erasurecode.rawcoder.RawErasureEncoder

allowChangeInputs, allowVerboseDump, encode, encode, encode, getNumAllUnits, getNumDataUnits, getNumParityUnits, preferDirectBuffer, release

Methods inherited from class java.lang.Object

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

Constructor Details

DummyRawEncoder

public DummyRawEncoder(ErasureCoderOptions coderOptions)

Method Details

doEncode

protected void doEncode(org.apache.hadoop.io.erasurecode.rawcoder.ByteArrayEncodingState encodingState)

Description copied from class: RawErasureEncoder

Perform the real encoding work using bytes array, supporting offsets and lengths.

Specified by:

doEncode in class RawErasureEncoder

Parameters:

encodingState - the encoding state

doEncode

protected void doEncode(org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferEncodingState encodingState)

Description copied from class: RawErasureEncoder

Perform the real encoding work using direct ByteBuffer.

Specified by:

doEncode in class RawErasureEncoder

Parameters:

encodingState - the encoding state.