Hadoop启动警告：util.NativeCodeLoader: Unable to load native-hadoop library for your platform

目录

一、问题

二、排查&解决

1、网上搜相关问题

2、先去看看 $HADOOP_HOME/lib/native 下有没有什么东西

3、重启hadoop，没有警告了

一、问题

Hadoop启动出现警告：

[hadoop@hadoop000 ~]$ start-all.sh 
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
19/06/25 07:06:10 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [hadoop000]

......

二、排查&解决

1、网上搜相关问题

2、先去看看 $HADOOP_HOME/lib/native 下有没有什么东西

[hadoop@hadoop000 ~]$ cd $HADOOP_HOME
[hadoop@hadoop000 hadoop-2.6.0-cdh5.7.0]$ cd lib
[hadoop@hadoop000 lib]$ cd native/
[hadoop@hadoop000 native]$ ll
total 0

什么都没有，于是先下载对应的 native 包，解压到 $HADOOP_HOME/lib 和 $HADOOP_HOME/lib 目录下，再重新启动试试。

下载地址：http://dl.bintray.com/sequenceiq/sequenceiq-bin/

[hadoop@hadoop000 native]$ ll
total 5236
-rw-r--r-- 1 hadoop hadoop 1119486 Jun 25 07:37 libhadoop.a
-rw-r--r-- 1 hadoop hadoop 1486964 Jun 25 07:37 libhadooppipes.a
-rwxr-xr-x 1 hadoop hadoop  671189 Jun 25 07:37 libhadoop.so
-rwxr-xr-x 1 hadoop hadoop  671189 Jun 25 07:37 libhadoop.so.1.0.0
-rw-r--r-- 1 hadoop hadoop  581944 Jun 25 07:37 libhadooputils.a
-rw-r--r-- 1 hadoop hadoop  359458 Jun 25 07:37 libhdfs.a
-rwxr-xr-x 1 hadoop hadoop  228435 Jun 25 07:37 libhdfs.so
-rwxr-xr-x 1 hadoop hadoop  228435 Jun 25 07:37 libhdfs.so.0.0.0

3、重启hadoop，没有警告了

[hadoop@hadoop000 ~]$ start-all.sh 
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
Starting namenodes on [hadoop000]
hadoop000: starting namenode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-namenode-hadoop000.out
hadoop000: starting datanode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-datanode-hadoop000.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-secondarynamenode-hadoop000.out
starting yarn daemons
starting resourcemanager, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/yarn-hadoop-resourcemanager-hadoop000.out
hadoop000: starting nodemanager, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/yarn-hadoop-nodemanager-hadoop000.out
[hadoop@hadoop000 ~]$ 

参考：https://blog.csdn.net/debugbugbg/article/details/79937551