org.apache.hadoop.hbase.io.compress

枚举 Compression.Algorithm

java.lang.Object

java.lang.Enum<Compression.Algorithm>

org.apache.hadoop.hbase.io.compress.Compression.Algorithm

所有已实现的接口:

Serializable, Comparable<Compression.Algorithm>

封闭类:

Compression

@InterfaceAudience.Public
@InterfaceStability.Evolving
public static enum Compression.Algorithm
extends Enum<Compression.Algorithm>

Compression algorithms. The ordinal of these cannot change or else you risk breaking all existing HFiles out there. Even the ones that are not compressed! (They use the NONE algorithm)

枚举常量概要

枚举常量

枚举常量和说明
BZIP2
GZ
LZ4
LZO
NONE
SNAPPY
ZSTD

方法概要

方法

限定符和类型	方法和说明
OutputStream	createCompressionStream(OutputStream downStream, org.apache.hadoop.io.compress.Compressor compressor, int downStreamBufferSize)
InputStream	createDecompressionStream(InputStream downStream, org.apache.hadoop.io.compress.Decompressor decompressor, int downStreamBufferSize)
org.apache.hadoop.io.compress.CompressionOutputStream	createPlainCompressionStream(OutputStream downStream, org.apache.hadoop.io.compress.Compressor compressor) Creates a compression stream without any additional wrapping into buffering streams.
org.apache.hadoop.io.compress.Compressor	getCompressor()
org.apache.hadoop.io.compress.Decompressor	getDecompressor()
String	getName()
void	returnCompressor(org.apache.hadoop.io.compress.Compressor compressor)
void	returnDecompressor(org.apache.hadoop.io.compress.Decompressor decompressor)
static Compression.Algorithm	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static Compression.Algorithm[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

LZO

public static final Compression.Algorithm LZO

GZ

public static final Compression.Algorithm GZ

NONE

public static final Compression.Algorithm NONE

SNAPPY

public static final Compression.Algorithm SNAPPY

LZ4

public static final Compression.Algorithm LZ4

BZIP2

public static final Compression.Algorithm BZIP2

ZSTD

public static final Compression.Algorithm ZSTD

方法详细资料

values

public static Compression.Algorithm[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (Compression.Algorithm c : Compression.Algorithm.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static Compression.Algorithm valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

createDecompressionStream

public InputStream createDecompressionStream(InputStream downStream,
                                    org.apache.hadoop.io.compress.Decompressor decompressor,
                                    int downStreamBufferSize)
                                      throws IOException

抛出:

IOException

createCompressionStream

public OutputStream createCompressionStream(OutputStream downStream,
                                   org.apache.hadoop.io.compress.Compressor compressor,
                                   int downStreamBufferSize)
                                     throws IOException

抛出:

IOException

createPlainCompressionStream

public org.apache.hadoop.io.compress.CompressionOutputStream createPlainCompressionStream(OutputStream downStream,
                                                                                 org.apache.hadoop.io.compress.Compressor compressor)
                                                                                   throws IOException

Creates a compression stream without any additional wrapping into buffering streams.

抛出:

IOException

getCompressor

public org.apache.hadoop.io.compress.Compressor getCompressor()

returnCompressor

public void returnCompressor(org.apache.hadoop.io.compress.Compressor compressor)

getDecompressor

public org.apache.hadoop.io.compress.Decompressor getDecompressor()

returnDecompressor

public void returnDecompressor(org.apache.hadoop.io.compress.Decompressor decompressor)

getName

public String getName()