(已解决)Hadoop之util.NativeCodeLoader: Unable to load native-hadoop library...

• 宿主机：Windows 11

• 虚拟机：VMware Pro 17

[muyi@hadoop103 lib]$ hostnamectl
Static hostname: hadoop103
     Icon name: computer-vm
       Chassis: vm
    Machine ID: 05ae79827e67409f906ab7a8593446b4
       Boot ID: aa61d0ca03764cb7a878fe3c14944d99
Virtualization: vmware
Operating System: CentOS Linux 7 (Core)
   CPE OS Name: cpe:/o:centos:centos:7
        Kernel: Linux 3.10.0-1160.119.1.el7.x86_64
  Architecture: x86-64

• hadoop版本: 3.1.3

问题描述

在我编写了一个hadoop启停脚本并使用它时,在启动过程中出现了下面这个警告

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

NativeCodeLoader:无法为您的平台加载本机hadoop库。。。在适用的情况下使用内置的java类

这个警告通常不会阻止 Hadoop 的正常运行，但它可能意味着 Hadoop 无法利用某些性能优化。

解决

在hadoop下/etc/hadoop/hadoop-env.sh文件下第92行后面添加下方配置：

export HADOOP_OPTS="-Djava.library.path=${HADOOP_HOME}/lib/native"

重新启动脚本后,警告没有再出现了!

以防后续出现其他问题,将更改过的文件分发到其他主机上

[muyi@hadoop102 hadoop]$ xsync hadoop-env.sh
==================== hadoop102 ====================
sending incremental file list

sent 64 bytes  received 12 bytes  50.67 bytes/sec
total size is 15,972  speedup is 210.16
==================== hadoop103 ====================
sending incremental file list
hadoop-env.sh

sent 968 bytes  received 173 bytes  760.67 bytes/sec
total size is 15,972  speedup is 14.00
==================== hadoop104 ====================
sending incremental file list
hadoop-env.sh

sent 968 bytes  received 173 bytes  2,282.00 bytes/sec
total size is 15,972  speedup is 14.00
[muyi@hadoop102 hadoop]$