Package org.apache.hadoop.hbase.ipc

Class CellBlockBuilder

java.lang.Object

org.apache.hadoop.hbase.ipc.CellBlockBuilder

@Private
class CellBlockBuilder
extends Object

Helper class for building cell block.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	CellBlockBuilder.ByteBufferOutputStreamSupplier
private static final class	CellBlockBuilder.ByteBufOutputStreamSupplier
private static interface	CellBlockBuilder.OutputStreamSupplier

Field Summary

Fields

Modifier and Type	Field	Description
private final int	cellBlockBuildingInitialBufferSize
private final int	cellBlockDecompressionMultiplier	How much we think the decompressor will expand the original compressed content.
private final org.apache.hadoop.conf.Configuration	conf
(package private) static final org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
CellBlockBuilder(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method	Description
ByteBuffer	buildCellBlock(Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor, CellScanner cellScanner)	Puts CellScanner Cells into a cell block using passed in codec and/or compressor.
private boolean	buildCellBlock(Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor, CellScanner cellScanner, CellBlockBuilder.OutputStreamSupplier supplier)
org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf	buildCellBlock(Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor, CellScanner cellScanner, org.apache.hbase.thirdparty.io.netty.buffer.ByteBufAllocator alloc)
ByteBufferListOutputStream	buildCellBlockStream(Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor, CellScanner cellScanner, ByteBuffAllocator allocator)	Puts CellScanner Cells into a cell block using passed in codec and/or compressor.
CellScanner	createCellScanner(Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor, byte[] cellBlock)	Create a cell scanner.
CellScanner	createCellScannerReusingBuffers(Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor, ByteBuff cellBlock)	Create a cell scanner using an existing bytebuff.
private ByteBuffer	decompress(org.apache.hadoop.io.compress.CompressionCodec compressor, byte[] compressedCellBlock)
private ByteBuffer	decompress(org.apache.hadoop.io.compress.CompressionCodec compressor, InputStream cellBlockStream, int osInitialSize)
private ByteBuff	decompress(org.apache.hadoop.io.compress.CompressionCodec compressor, ByteBuff compressedCellBlock)
private void	encodeCellsTo(OutputStream os, CellScanner cellScanner, Codec codec, org.apache.hadoop.io.compress.CompressionCodec compressor)

Methods inherited from class java.lang.Object

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

Field Details

LOG

static final org.slf4j.Logger LOG

conf

private final org.apache.hadoop.conf.Configuration conf

cellBlockDecompressionMultiplier

private final int cellBlockDecompressionMultiplier

How much we think the decompressor will expand the original compressed content.

cellBlockBuildingInitialBufferSize

private final int cellBlockBuildingInitialBufferSize

Constructor Details

CellBlockBuilder

public CellBlockBuilder(org.apache.hadoop.conf.Configuration conf)

Method Details

buildCellBlock

public ByteBuffer buildCellBlock(Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor,
 CellScanner cellScanner)
                          throws IOException

Puts CellScanner Cells into a cell block using passed in codec and/or compressor.

Returns:

Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using passed in codec and/or compressor; the returned buffer has been flipped and is ready for reading. Use limit to find total size.

Throws:

IOException

buildCellBlock

public org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf buildCellBlock(Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor,
 CellScanner cellScanner,
 org.apache.hbase.thirdparty.io.netty.buffer.ByteBufAllocator alloc)
                                                                   throws IOException

Throws:

IOException

buildCellBlock

private boolean buildCellBlock(Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor,
 CellScanner cellScanner,
 CellBlockBuilder.OutputStreamSupplier supplier)
                        throws IOException

Throws:

IOException

encodeCellsTo

private void encodeCellsTo(OutputStream os,
 CellScanner cellScanner,
 Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor)
                    throws IOException

Throws:

IOException

buildCellBlockStream

public ByteBufferListOutputStream buildCellBlockStream(Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor,
 CellScanner cellScanner,
 ByteBuffAllocator allocator)
                                                throws IOException

Puts CellScanner Cells into a cell block using passed in codec and/or compressor.

Parameters:

codec - to use for encoding

compressor - to use for encoding

cellScanner - to encode

allocator - to allocate the ByteBuff.

Returns:

Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using passed in codec and/or compressor; the returned buffer has been flipped and is ready for reading. Use limit to find total size. If pool was not null, then this returned ByteBuffer came from there and should be returned to the pool when done.

Throws:

IOException - if encoding the cells fail

createCellScanner

public CellScanner createCellScanner(Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor,
 byte[] cellBlock)
                              throws IOException

Create a cell scanner.

Parameters:

codec - to use for cellblock

cellBlock - to encode

Returns:

CellScanner to work against the content of cellBlock

Throws:

IOException - if encoding fails

createCellScannerReusingBuffers

public CellScanner createCellScannerReusingBuffers(Codec codec,
 org.apache.hadoop.io.compress.CompressionCodec compressor,
 ByteBuff cellBlock)
                                            throws IOException

Create a cell scanner using an existing bytebuff.

Parameters:

codec - to use for cellblock

cellBlock - ByteBuffer containing the cells written by the Codec. The buffer should be position()'ed at the start of the cell block and limit()'ed at the end.

Returns:

CellScanner to work against the content of cellBlock. All cells created out of the CellScanner will share the same ByteBuffer being passed.

Throws:

IOException - if cell encoding fails

decompress

private ByteBuffer decompress(org.apache.hadoop.io.compress.CompressionCodec compressor,
 byte[] compressedCellBlock)
                       throws IOException

Throws:

IOException

decompress

private ByteBuff decompress(org.apache.hadoop.io.compress.CompressionCodec compressor,
 ByteBuff compressedCellBlock)
                     throws IOException

Throws:

IOException

decompress

private ByteBuffer decompress(org.apache.hadoop.io.compress.CompressionCodec compressor,
 InputStream cellBlockStream,
 int osInitialSize)
                       throws IOException

Throws:

IOException