参照：Hadoop之—— WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform...
修改：/home/komean/workspace/hadoop/hadoop-2.7.7/etc/hadoop/log4j.properties 文件， 添加如下：
log4j.logger.org.apache.hadoop.util.NativeCodeLoader=ERROR
测试：
hadoop命令运行，去除：WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform 警告