Package org.apache.hadoop.hbase.io.hfile

Interface HFileIndexBlockEncoder

All Known Implementing Classes:

HFileIndexBlockEncoderImpl, NoOpIndexBlockEncoder

@Private
public interface HFileIndexBlockEncoder

Controls what kind of index block encoding is used. If index block encoding is not set or the given block is not a index block (encoded or not), methods should just return the unmodified block.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	HFileIndexBlockEncoder.EncodedSeeker

Field Summary

Fields

Modifier and Type	Field	Description
static final byte[]	INDEX_BLOCK_ENCODING	Type of encoding used for index blocks in HFile.

Method Summary

Modifier and Type	Method	Description
HFileIndexBlockEncoder.EncodedSeeker	createSeeker()
void	encode(BlockIndexChunk blockIndexChunk, boolean rootIndexBlock, DataOutput out)
IndexBlockEncoding	getIndexBlockEncoding()	Returns the index block encoding
void	saveMetadata(HFile.Writer writer)	Save metadata in HFile which will be written to disk

Field Details

INDEX_BLOCK_ENCODING

static final byte[] INDEX_BLOCK_ENCODING

Type of encoding used for index blocks in HFile. Stored in file info.

Method Details

saveMetadata

void saveMetadata(HFile.Writer writer)
           throws IOException

Save metadata in HFile which will be written to disk

Parameters:

writer - writer for a given HFile

Throws:

IOException - on disk problems

encode

void encode(BlockIndexChunk blockIndexChunk,
 boolean rootIndexBlock,
 DataOutput out)
     throws IOException

Throws:

IOException

getIndexBlockEncoding

IndexBlockEncoding getIndexBlockEncoding()

Returns the index block encoding

createSeeker

HFileIndexBlockEncoder.EncodedSeeker createSeeker()