Unable to load native-hadoop library for your platform…
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从官方下载的Hadoop 2.2.0发布包，安装配置启动后在日志信息中看到如下告警：
WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
这是因为：
详见：http://www.micmiu.com/opensource/hadoop/unable-to-load-native-hadoop-library/
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