org.apache.hadoop.util
Class NativeCodeLoader

java.lang.Object
  org.apache.hadoop.util.NativeCodeLoader

public class NativeCodeLoader
extends Object

A helper to load the native hadoop code i.e. libhadoop.so. This handles the fallback to either the bundled libhadoop-Linux-i386-32.so or the default java implementations where appropriate.

Constructor Summary

NativeCodeLoader()

Method Summary

boolean	getLoadNativeLibraries(Configuration conf) Return if native hadoop libraries, if present, can be used for this job.
static boolean	isNativeCodeLoaded() Check if native-hadoop code is loaded for this platform.
void	setLoadNativeLibraries(Configuration conf, boolean loadNativeLibraries) Set if native hadoop libraries, if present, can be used for this job.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NativeCodeLoader

public NativeCodeLoader()

Method Detail

isNativeCodeLoaded

public static boolean isNativeCodeLoaded()

Check if native-hadoop code is loaded for this platform.

Returns:

true if native-hadoop is loaded, else false

getLoadNativeLibraries

public boolean getLoadNativeLibraries(Configuration conf)

Return if native hadoop libraries, if present, can be used for this job.

Parameters:

conf - configuration

Returns:

true if native hadoop libraries, if present, can be used for this job; false otherwise.

setLoadNativeLibraries

public void setLoadNativeLibraries(Configuration conf,
                                   boolean loadNativeLibraries)

Set if native hadoop libraries, if present, can be used for this job.

Parameters:

conf - configuration

loadNativeLibraries - can native hadoop libraries be loaded