接口 org.apache.hadoop.io.compress.Compressor
的使用

使用Compressor的程序包

程序包	说明
org.apache.hadoop.io.compress
org.apache.hadoop.io.compress.bzip2
org.apache.hadoop.io.compress.snappy
org.apache.hadoop.io.compress.zlib

org.apache.hadoop.io.compress中Compressor的使用

声明为Compressor的org.apache.hadoop.io.compress中的字段

限定符和类型	字段和说明
protected Compressor	CompressorStream.compressor

返回Compressor的org.apache.hadoop.io.compress中的方法

限定符和类型	方法和说明
Compressor	SnappyCodec.createCompressor() Create a new Compressor for use by this CompressionCodec.
Compressor	GzipCodec.createCompressor()
Compressor	DefaultCodec.createCompressor()
Compressor	CompressionCodec.createCompressor() Create a new Compressor for use by this CompressionCodec.
Compressor	BZip2Codec.createCompressor() This functionality is currently not supported.
static Compressor	CodecPool.getCompressor(CompressionCodec codec)
static Compressor	CodecPool.getCompressor(CompressionCodec codec, Configuration conf) Get a Compressor for the given CompressionCodec from the pool or a new one.

返回变量类型为Compressor的类型的org.apache.hadoop.io.compress中的方法

限定符和类型	方法和说明
Class<? extends Compressor>	SnappyCodec.getCompressorType() Get the type of Compressor needed by this CompressionCodec.
Class<? extends Compressor>	GzipCodec.getCompressorType()
Class<? extends Compressor>	DefaultCodec.getCompressorType()
Class<? extends Compressor>	CompressionCodec.getCompressorType() Get the type of Compressor needed by this CompressionCodec.
Class<? extends Compressor>	BZip2Codec.getCompressorType() This functionality is currently not supported.

参数类型为Compressor的org.apache.hadoop.io.compress中的方法

限定符和类型	方法和说明
CompressionOutputStream	SnappyCodec.createOutputStream(OutputStream out, Compressor compressor) Create a CompressionOutputStream that will write to the given OutputStream with the given Compressor.
CompressionOutputStream	GzipCodec.createOutputStream(OutputStream out, Compressor compressor)
CompressionOutputStream	DefaultCodec.createOutputStream(OutputStream out, Compressor compressor)
CompressionOutputStream	CompressionCodec.createOutputStream(OutputStream out, Compressor compressor) Create a CompressionOutputStream that will write to the given OutputStream with the given Compressor.
CompressionOutputStream	BZip2Codec.createOutputStream(OutputStream out, Compressor compressor) Creates a compressor using given OutputStream.
static void	CodecPool.returnCompressor(Compressor compressor) Return the Compressor to the pool.

参数类型为Compressor的org.apache.hadoop.io.compress中的构造器

构造器和说明
BlockCompressorStream(OutputStream out, Compressor compressor) Create a BlockCompressorStream with given output-stream and compressor.
BlockCompressorStream(OutputStream out, Compressor compressor, int bufferSize, int compressionOverhead) Create a BlockCompressorStream.
CompressorStream(OutputStream out, Compressor compressor)
CompressorStream(OutputStream out, Compressor compressor, int bufferSize)

org.apache.hadoop.io.compress.bzip2中Compressor的使用

实现Compressor的org.apache.hadoop.io.compress.bzip2中的类

限定符和类型	类和说明
class	BZip2DummyCompressor This is a dummy compressor for BZip2.

org.apache.hadoop.io.compress.snappy中Compressor的使用

实现Compressor的org.apache.hadoop.io.compress.snappy中的类

限定符和类型	类和说明
class	SnappyCompressor A Compressor based on the snappy compression algorithm.

org.apache.hadoop.io.compress.zlib中Compressor的使用

实现Compressor的org.apache.hadoop.io.compress.zlib中的类

限定符和类型	类和说明
class	BuiltInZlibDeflater A wrapper around java.util.zip.Deflater to make it conform to org.apache.hadoop.io.compress.Compressor interface.
class	ZlibCompressor A Compressor based on the popular zlib compression algorithm.

返回Compressor的org.apache.hadoop.io.compress.zlib中的方法

限定符和类型	方法和说明
static Compressor	ZlibFactory.getZlibCompressor(Configuration conf) Return the appropriate implementation of the zlib compressor.

返回变量类型为Compressor的类型的org.apache.hadoop.io.compress.zlib中的方法

限定符和类型	方法和说明
static Class<? extends Compressor>	ZlibFactory.getZlibCompressorType(Configuration conf) Return the appropriate type of the zlib compressor.