org.apache.flink.runtime.io.compression

Class AirBlockCompressor

java.lang.Object

org.apache.flink.runtime.io.compression.AirBlockCompressor

All Implemented Interfaces:

BlockCompressor

public class AirBlockCompressor
extends Object
implements BlockCompressor

Flink compressor that wraps Compressor.

Constructor Summary

Constructors

Constructor and Description
AirBlockCompressor(io.airlift.compress.Compressor internalCompressor)

Method Summary

Modifier and Type	Method and Description
int	compress(byte[] src, int srcOff, int srcLen, byte[] dst, int dstOff) Compress data read from src, and write the compressed data to dst.
int	compress(ByteBuffer src, int srcOff, int srcLen, ByteBuffer dst, int dstOff) Compress source data read from (Buffer.position() + srcOff), and write the compressed data to dst.
int	getMaxCompressedSize(int srcSize) Get the max compressed size for a given original size.

Methods inherited from class java.lang.Object

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

Constructor Detail

AirBlockCompressor

public AirBlockCompressor(io.airlift.compress.Compressor internalCompressor)

Method Detail

getMaxCompressedSize

public int getMaxCompressedSize(int srcSize)

Description copied from interface: BlockCompressor

Get the max compressed size for a given original size.

Specified by:

getMaxCompressedSize in interface BlockCompressor

compress

public int compress(ByteBuffer src,
                    int srcOff,
                    int srcLen,
                    ByteBuffer dst,
                    int dstOff)
             throws BufferCompressionException

Description copied from interface: BlockCompressor

Compress source data read from (Buffer.position() + srcOff), and write the compressed data to dst.

Specified by:

compress in interface BlockCompressor

Parameters:

src - Uncompressed data to read from

srcOff - The start offset of uncompressed data

srcLen - The length of data which want to be compressed

dst - The target to write compressed data

dstOff - The start offset to write the compressed data

Returns:

Length of compressed data

Throws:

BufferCompressionException - if exception thrown when compressing

compress

public int compress(byte[] src,
                    int srcOff,
                    int srcLen,
                    byte[] dst,
                    int dstOff)
             throws BufferCompressionException

Description copied from interface: BlockCompressor

Compress data read from src, and write the compressed data to dst.

Specified by:

compress in interface BlockCompressor

Parameters:

src - Uncompressed data to read from

srcOff - The start offset of uncompressed data

srcLen - The length of data which want to be compressed

dst - The target to write compressed data

dstOff - The start offset to write the compressed data

Returns:

Length of compressed data

Throws:

BufferCompressionException - if exception thrown when compressing