Package org.apache.hadoop.io.compress

Class CompressorStream

java.lang.Object

java.io.OutputStream

org.apache.hadoop.io.compress.CompressionOutputStream

org.apache.hadoop.io.compress.CompressorStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, org.apache.hadoop.fs.statistics.IOStatisticsSource

Direct Known Subclasses:

BlockCompressorStream

@Public
@Evolving
public class CompressorStream
extends CompressionOutputStream

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	buffer
protected boolean	closed
protected Compressor	compressor

Fields inherited from class org.apache.hadoop.io.compress.CompressionOutputStream

out

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CompressorStream(OutputStream out)	Allow derived classes to directly set the underlying stream.
	CompressorStream(OutputStream out, Compressor compressor)
	CompressorStream(OutputStream out, Compressor compressor, int bufferSize)

Method Summary

Modifier and Type	Method	Description
void	close()
protected void	compress()
void	finish()	Finishes writing compressed data to the output stream without closing the underlying stream.
void	resetState()	Reset the compression to the initial state.
void	write(byte[] b, int off, int len)	Write compressed bytes to the stream.
void	write(int b)

Methods inherited from class org.apache.hadoop.io.compress.CompressionOutputStream

flush, getIOStatistics

Methods inherited from class java.io.OutputStream

nullOutputStream, write

Methods inherited from class java.lang.Object

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

Field Details

compressor

protected Compressor compressor

buffer

protected byte[] buffer

closed

protected boolean closed

Constructor Details

CompressorStream

public CompressorStream(OutputStream out,
 Compressor compressor,
 int bufferSize)

CompressorStream

public CompressorStream(OutputStream out,
 Compressor compressor)

CompressorStream

protected CompressorStream(OutputStream out)

Allow derived classes to directly set the underlying stream.

Parameters:

out - Underlying output stream.

Method Details

write

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

Description copied from class: CompressionOutputStream

Write compressed bytes to the stream. Made abstract to prevent leakage to underlying stream.

Specified by:

write in class CompressionOutputStream

Throws:

IOException

compress

protected void compress()
                 throws IOException

Throws:

IOException

finish

public void finish()
            throws IOException

Description copied from class: CompressionOutputStream

Finishes writing compressed data to the output stream without closing the underlying stream.

Specified by:

finish in class CompressionOutputStream

Throws:

IOException - raised on errors performing I/O.

resetState

public void resetState()
                throws IOException

Description copied from class: CompressionOutputStream

Reset the compression to the initial state. Does not reset the underlying stream.

Specified by:

resetState in class CompressionOutputStream

Throws:

IOException - raised on errors performing I/O.

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class CompressionOutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException