Package org.apache.hadoop.hbase.codec

Class KeyValueCodec

java.lang.Object
org.apache.hadoop.hbase.codec.KeyValueCodec
All Implemented Interfaces:
Codec
@LimitedPrivate("Configuration") public class KeyValueCodec extends Object implements Codec
Codec that does KeyValue version 1 serialization.

Encodes Cell as serialized in KeyValue with total length prefix. This is how KVs were serialized in Puts, Deletes and Results pre-0.96. Its what would happen if you called the Writable#write KeyValue implementation. This encoder will fail if the passed Cell is not an old-school pre-0.96 KeyValue. Does not copy bytes writing. It just writes them direct to the passed stream.

If you wrote two KeyValues to this encoder, it would look like this in the stream: 

 length-of-KeyValue1 // A java int with the length of KeyValue1 backing array
 KeyValue1 backing array filled with a KeyValue serialized in its particular format
 length-of-KeyValue2
 KeyValue2 backing array