org.apache.hadoop.mapred.nativetask

Interface INativeHandler

All Superinterfaces:

NativeDataSource, NativeDataTarget

All Known Implementing Classes:

NativeBatchProcessor

@InterfaceAudience.Private
public interface INativeHandler
extends NativeDataTarget, NativeDataSource

A Handler accept input, and give output can be used to transfer command and data

Method Summary

Modifier and Type	Method and Description
ReadWriteBuffer	call(Command command, ReadWriteBuffer parameter) call command to downstream
void	close() close the native handler
long	getNativeHandler()
void	init(org.apache.hadoop.conf.Configuration conf) init the native handler
String	name()
void	setCommandDispatcher(CommandDispatcher handler)

Methods inherited from interface org.apache.hadoop.mapred.nativetask.NativeDataTarget

finishSendData, getOutputBuffer, sendData

Methods inherited from interface org.apache.hadoop.mapred.nativetask.NativeDataSource

getInputBuffer, loadData, setDataReceiver

Method Detail

name

String name()

getNativeHandler

long getNativeHandler()

init

void init(org.apache.hadoop.conf.Configuration conf)
   throws IOException

init the native handler

Throws:

IOException

close

void close()
    throws IOException

close the native handler

Throws:

IOException

call

ReadWriteBuffer call(Command command,
                     ReadWriteBuffer parameter)
              throws IOException

call command to downstream

Throws:

IOException

setCommandDispatcher

void setCommandDispatcher(CommandDispatcher handler)