我一直在对Ubuntu服务器上的该问题进行故障排除.关于"WARN util.NativeCodeLoader:无法为您的本地加载Hadoop库..."，请检查环境变量并确保Java路径指向64位二进制文​​件.这为我解决了这个问题.

I've been troubleshooting this issue on my Ubuntu servers. Regarding the "WARN util.NativeCodeLoader: Unable to load native-hadoop library for your..." Check your environment variables and make sure that your Java path is pointing to the 64 bit binaries. That fixed the issue for me.