com.hadoop.compression.lzo

Class LzopInputStream

java.lang.Object

java.io.InputStream

org.apache.hadoop.io.compress.CompressionInputStream

org.apache.hadoop.io.compress.DecompressorStream

org.apache.hadoop.io.compress.BlockDecompressorStream

com.hadoop.compression.lzo.LzopInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.fs.Seekable

public class LzopInputStream
extends org.apache.hadoop.io.compress.BlockDecompressorStream

Field Summary

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

buffer, closed, decompressor, eof

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

in, maxAvailableData

Constructor Summary

Constructors

Constructor and Description
LzopInputStream(InputStream in, org.apache.hadoop.io.compress.Decompressor decompressor, int bufferSize)

Method Summary

Modifier and Type	Method and Description
void	close()
protected int	decompress(byte[] b, int off, int len)
long	getCompressedBytesRead()
protected int	getCompressedData() Read checksums and feed compressed block data into decompressor.
protected void	readHeader(InputStream in) Read and verify an lzo header, setting relevant block checksum options and ignoring most everything else.

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

resetState

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

available, checkStream, mark, markSupported, read, read, reset, skip

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

getPos, seek, seekToNewSource

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

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

Constructor Detail

LzopInputStream

public LzopInputStream(InputStream in,
                       org.apache.hadoop.io.compress.Decompressor decompressor,
                       int bufferSize)
                throws IOException

Throws:

IOException

Method Detail

readHeader

protected void readHeader(InputStream in)
                   throws IOException

Read and verify an lzo header, setting relevant block checksum options and ignoring most everything else.

Parameters:

in - InputStream

Throws:

IOException - if there is a error in lzo header

decompress

protected int decompress(byte[] b,
                         int off,
                         int len)
                  throws IOException

Overrides:

decompress in class org.apache.hadoop.io.compress.BlockDecompressorStream

Throws:

IOException

getCompressedData

protected int getCompressedData()
                         throws IOException

Read checksums and feed compressed block data into decompressor.

Overrides:

getCompressedData in class org.apache.hadoop.io.compress.BlockDecompressorStream

Throws:

IOException

getCompressedBytesRead

public long getCompressedBytesRead()

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class org.apache.hadoop.io.compress.DecompressorStream

Throws:

IOException