org.apache.hadoop.hbase.io.compress.zstd

Class ZstdCompressor

java.lang.Object

org.apache.hadoop.hbase.io.compress.zstd.ZstdCompressor

All Implemented Interfaces:

CanReinit, org.apache.hadoop.io.compress.Compressor

@InterfaceAudience.Private
public class ZstdCompressor
extends Object
implements CanReinit, org.apache.hadoop.io.compress.Compressor

Hadoop compressor glue for zstd-jni.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bufferSize
protected long	bytesRead
protected long	bytesWritten
protected com.github.luben.zstd.ZstdDictCompress	dict
protected int	dictId
protected boolean	finish
protected boolean	finished
protected ByteBuffer	inBuf
protected int	level
protected ByteBuffer	outBuf

Constructor Summary

Constructors

Constructor and Description
ZstdCompressor(int level, int bufferSize)
ZstdCompressor(int level, int bufferSize, byte[] dictionary)

Method Summary

Modifier and Type	Method and Description
int	compress(byte[] b, int off, int len)
void	end()
void	finish()
boolean	finished()
long	getBytesRead()
long	getBytesWritten()
(package private) static int	maxCompressedLength(int len)
boolean	needsInput()
void	reinit(org.apache.hadoop.conf.Configuration conf)
void	reset()
void	setDictionary(byte[] b, int off, int len)
void	setInput(byte[] b, int off, int len)

Methods inherited from class java.lang.Object

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

Field Detail

level

protected int level

bufferSize

protected int bufferSize

inBuf

protected ByteBuffer inBuf

outBuf

protected ByteBuffer outBuf

finish

protected boolean finish

finished

protected boolean finished

bytesRead

protected long bytesRead

bytesWritten

protected long bytesWritten

dictId

protected int dictId

dict

protected com.github.luben.zstd.ZstdDictCompress dict

Constructor Detail

ZstdCompressor

ZstdCompressor(int level,
               int bufferSize,
               byte[] dictionary)

ZstdCompressor

ZstdCompressor(int level,
               int bufferSize)

Method Detail

compress

public int compress(byte[] b,
                    int off,
                    int len)
             throws IOException

Specified by:

compress in interface org.apache.hadoop.io.compress.Compressor

Throws:

IOException

end

public void end()

Specified by:

end in interface org.apache.hadoop.io.compress.Compressor

finish

public void finish()

Specified by:

finish in interface org.apache.hadoop.io.compress.Compressor

finished

public boolean finished()

Specified by:

finished in interface org.apache.hadoop.io.compress.Compressor

getBytesRead

public long getBytesRead()

Specified by:

getBytesRead in interface org.apache.hadoop.io.compress.Compressor

getBytesWritten

public long getBytesWritten()

Specified by:

getBytesWritten in interface org.apache.hadoop.io.compress.Compressor

needsInput

public boolean needsInput()

Specified by:

needsInput in interface org.apache.hadoop.io.compress.Compressor

reinit

public void reinit(org.apache.hadoop.conf.Configuration conf)

Specified by:

reinit in interface CanReinit

Specified by:

reinit in interface org.apache.hadoop.io.compress.Compressor

reset

public void reset()

Specified by:

reset in interface org.apache.hadoop.io.compress.Compressor

setDictionary

public void setDictionary(byte[] b,
                          int off,
                          int len)

Specified by:

setDictionary in interface org.apache.hadoop.io.compress.Compressor

setInput

public void setInput(byte[] b,
                     int off,
                     int len)

Specified by:

setInput in interface org.apache.hadoop.io.compress.Compressor

maxCompressedLength

static int maxCompressedLength(int len)