Uses of Interface
org.apache.hadoop.hbase.io.encoding.DataBlockEncoder

Packages that use DataBlockEncoder

Package	Description
org.apache.hadoop.hbase.io.encoding
org.apache.hadoop.hbase.io.hfile	Provides implementations of HFile and HFile BlockCache.

Uses of DataBlockEncoder in org.apache.hadoop.hbase.io.encoding

Classes in org.apache.hadoop.hbase.io.encoding that implement DataBlockEncoder

Modifier and Type	Class and Description
class	AbstractDataBlockEncoder
(package private) class	BufferedDataBlockEncoder Base class for all data block encoders that use a buffer.
class	CopyKeyDataBlockEncoder Just copy data, do not do any kind of compression.
class	DiffKeyDeltaEncoder Compress using: - store size of common prefix - save column family once, it is same within HFile - use integer compression for key, value and prefix (7-bit encoding) - use bits to avoid duplication key length, value length and type if it same as previous - store in 3 bits length of timestamp field - allow diff in timestamp instead of actual value Format: - 1 byte: flag - 1-5 bytes: key length (only if FLAG_SAME_KEY_LENGTH is not set in flag) - 1-5 bytes: value length (only if FLAG_SAME_VALUE_LENGTH is not set in flag) - 1-5 bytes: prefix length - ...
class	FastDiffDeltaEncoder Encoder similar to DiffKeyDeltaEncoder but supposedly faster.
class	PrefixKeyDeltaEncoder Compress key by storing size of common prefix with previous KeyValue and storing raw size of rest.
class	RowIndexCodecV1 Store cells following every row's start offset, so we can binary search to a row's cells.

Fields in org.apache.hadoop.hbase.io.encoding declared as DataBlockEncoder

Modifier and Type	Field and Description
private DataBlockEncoder	EncodedDataBlock.dataBlockEncoder
private DataBlockEncoder	DataBlockEncoding.encoder

Methods in org.apache.hadoop.hbase.io.encoding that return DataBlockEncoder

Modifier and Type	Method and Description
(package private) static DataBlockEncoder	DataBlockEncoding.createEncoder(String fullyQualifiedClassName)
static DataBlockEncoder	DataBlockEncoding.getDataBlockEncoderById(short encoderId) Find and create data block encoder for given id;
DataBlockEncoder	DataBlockEncoding.getEncoder() Return new data block encoder for given algorithm type.

Methods in org.apache.hadoop.hbase.io.encoding with parameters of type DataBlockEncoder

Modifier and Type	Method and Description
static boolean	DataBlockEncoding.isCorrectEncoder(DataBlockEncoder encoder, short encoderId) Check if given encoder has this id.

Constructors in org.apache.hadoop.hbase.io.encoding with parameters of type DataBlockEncoder

Constructor and Description
EncodedDataBlock(org.apache.hadoop.conf.Configuration conf, DataBlockEncoder dataBlockEncoder, DataBlockEncoding encoding, byte[] rawKVs, HFileContext meta) Create a buffer which will be encoded using dataBlockEncoder.

Uses of DataBlockEncoder in org.apache.hadoop.hbase.io.hfile

Fields in org.apache.hadoop.hbase.io.hfile declared as DataBlockEncoder

Modifier and Type	Field and Description
private DataBlockEncoder	HFileReaderImpl.EncodedScanner.dataBlockEncoder