org.apache.hadoop.hbase.io.encoding

Interface HFileBlockEncodingContext

All Known Implementing Classes:

HFileBlockDefaultEncodingContext

@InterfaceAudience.Private
public interface HFileBlockEncodingContext

An encoding context that is created by a writer's encoder, and is shared across the writer's whole lifetime.

See Also:

for decoding

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Releases the resources used.
BlockType	getBlockType()
DataBlockEncoding	getDataBlockEncoding()
HFileContext	getHFileContext()
byte[]	getOnDiskBytesWithHeader()
OutputStream	getOutputStreamForEncoder()
byte[]	getUncompressedBytesWithHeader()
void	postEncoding(BlockType blockType) Do any action that needs to be performed after the encoding.
void	setDummyHeader(byte[] headerBytes) sets the dummy header bytes

Method Detail

getOutputStreamForEncoder

OutputStream getOutputStreamForEncoder()

Returns:

OutputStream to which encoded data is written

getOnDiskBytesWithHeader

byte[] getOnDiskBytesWithHeader()

Returns:

encoded and compressed bytes with header which are ready to write out to disk

getUncompressedBytesWithHeader

byte[] getUncompressedBytesWithHeader()

Returns:

encoded but not heavily compressed bytes with header which can be cached in block cache

getBlockType

BlockType getBlockType()

Returns:

the block type after encoding

setDummyHeader

void setDummyHeader(byte[] headerBytes)

sets the dummy header bytes

getDataBlockEncoding

DataBlockEncoding getDataBlockEncoding()

Returns:

the DataBlockEncoding encoding used

postEncoding

void postEncoding(BlockType blockType)
                  throws IOException

Do any action that needs to be performed after the encoding. Compression is also included if a non-null compression algorithm is used

Parameters:

blockType -

Throws:

IOException

close

void close()

Releases the resources used.

getHFileContext

HFileContext getHFileContext()

Returns:

HFile context information