org.apache.hadoop.mapred.nativetask.serde

Interface IKVSerializer

All Known Implementing Classes:

KVSerializer

@InterfaceAudience.Private
public interface IKVSerializer

serializes key-value pair

Method Summary

Modifier and Type	Method and Description
int	deserializeKV(DataInputStream in, SizedWritable<?> key, SizedWritable<?> value)
int	serializeKV(DataOutputStream out, SizedWritable<?> key, SizedWritable<?> value)
int	serializePartitionKV(DataOutputStream out, int partitionId, SizedWritable<?> key, SizedWritable<?> value)
void	updateLength(SizedWritable<?> key, SizedWritable<?> value) update the length field of SizedWritable

Method Detail

updateLength

void updateLength(SizedWritable<?> key,
                  SizedWritable<?> value)
           throws IOException

update the length field of SizedWritable

Throws:

IOException

serializeKV

int serializeKV(DataOutputStream out,
                SizedWritable<?> key,
                SizedWritable<?> value)
         throws IOException

Throws:

IOException

serializePartitionKV

int serializePartitionKV(DataOutputStream out,
                         int partitionId,
                         SizedWritable<?> key,
                         SizedWritable<?> value)
                  throws IOException

Throws:

IOException

deserializeKV

int deserializeKV(DataInputStream in,
                  SizedWritable<?> key,
                  SizedWritable<?> value)
           throws IOException

Throws:

IOException