hadoop--Unable to load native-hadoop library for your platform解决方法

笔者实验环境：centos 7.4.1708，hadoop-2.6.0-cdh5.14.2.

执行hadoop命令时出现以下告警，不能加载相关库：

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

检查发现本地并没有库：

$ hadoop checknative -a
19/08/30 13:11:53 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Native library checking:
hadoop:  false
zlib:    false
snappy:  false
lz4:     false
bzip2:   false
openssl: false
19/08/30 13:11:53 INFO util.ExitUtil: Exiting with status 1

进入到hadoop目录下可以看到/lib/native为空。

需要下载对应版本的库文件：http://dl.bintray.com/sequenceiq/sequenceiq-bin/

此处笔者选择：hadoop-native-64-2.6.0.tar。

下载解压至hadoop目录下的/lib/native中：

$ ll
total 4356
-rw-r--r-- 1 hadoop hadoop 1119486 Dec  2  2014 libhadoop.a
-rw-r--r-- 1 hadoop hadoop 1486964 Dec  2  2014 libhadooppipes.a
lrwxrwxrwx 1 hadoop hadoop      18 Dec  2  2014 libhadoop.so -> libhadoop.so.1.0.0
-rwxr-xr-x 1 hadoop hadoop  671189 Dec  2  2014 libhadoop.so.1.0.0
-rw-r--r-- 1 hadoop hadoop  581944 Dec  2  2014 libhadooputils.a
-rw-r--r-- 1 hadoop hadoop  359458 Dec  2  2014 libhdfs.a
lrwxrwxrwx 1 hadoop hadoop      16 Dec  2  2014 libhdfs.so -> libhdfs.so.0.0.0
-rwxr-xr-x 1 hadoop hadoop  228435 Dec  2  2014 libhdfs.so.0.0.0

重启dfs，问题解决：(笔者已经配置好hadoop环境变量，直接运行命令)

$ start-dfs.sh
$ hdfs dfs -ls /
Found 2 items
drwxr-xr-x   - hadoop supergroup          0 2019-08-29 15:08 /test
drwx------   - hadoop supergroup          0 2019-08-29 15:08 /tmp