WARN util.NativeCodeLoader：无法为您的平台加载native-hadoop库...在mac上使用内置java类

Question

我使用的是Mac OSX El-Capitan，并且是hadoop的新增功能。安装后，我得到这个警告：

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 
Starting namenodes on [localhost] 
localhost: starting namenode, logging to /usr/local/hadoop/hadoop-2.7.2/logs/hadoop-rippermode-namenode-Nitin-Pro.mshome.net.out 
localhost: starting datanode, logging to /usr/local/hadoop/hadoop-2.7.2/logs/hadoop-rippermode-datanode-Nitin-Pro.mshome.net.out 
Starting secondary namenodes [0.0.0.0] 
0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-2.7.2/logs/hadoop-rippermode-secondarynamenode-Nitin-Pro.mshome.net.out 
16/12/07 15:16:34 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 
starting yarn daemons 
starting resourcemanager, logging to /usr/local/hadoop/hadoop-2.7.2/logs/yarn-rippermode-resourcemanager-Nitin-Pro.mshome.net.out 
localhost: starting nodemanager, logging to /usr/local/hadoop/hadoop-2.7.2/logs/yarn-rippermode-nodemanager-Nitin-Pro.mshome.net.out 

我该如何解决这个问题？

Answer 1

您必须自己编译hadoop才能解决此问题。

问题不是所有的hadoop都是用java编写的。有几个本地库随hadoop一起提供，并依赖于操作系统中的其他库。由于您下载的hadoop构建在不同的系统上，因此某些依赖项不符合要求。