Hadoop启动报错：Unable to load native

启动之后出现以下警告

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
说明hadoop的native库导入失败。一般是native库出现问题，重新安装与hadoop版本一致的native，并配置好配置文件就行

解决措施

先在官网下载native包
http://dl.bintray.com/sequenceiq/sequenceiq-bin/
上传解压到/hadoop/lib路径下

[[email protected] /] cd /opt/app/hadoop/lib
[[email protected] lib] rz #上传tar包
[[email protected] lib] mkdir native #新建native文件夹
[[email protected] lib] tar -xvf hadoop-native-64-2.6.0.tar -C native
[[email protected] lib] ls
hadoop-native-64-2.6.0.tar  native
[[email protected] lib] cd native
[[email protected] native] ls
libhadoop.a  libhadooppipes.a  libhadoop.so  libhadoop.so.1.0.0  libhadooputils.a  libhdfs.a  libhdfs.so  libhdfs.so.0.0.0

编辑并生效环境变量

[[email protected] /] vim /etc/profile
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native  
export HADOOP_OPTS="$HADOOP_OPTS -Djava.library.path=$HADOOP_HOME/lib/native" 
[[email protected] /] . /etc/profile #生效环境变量

启动hdfs

[[email protected] /] start-dfs.sh
Starting namenodes on [Hadoop01]
Hadoop01: namenode running as process 4548. Stop it first.
Hadoop01: datanode running as process 4679. Stop it first.
Starting secondary namenodes [0.0.0.0]
0.0.0.0: secondarynamenode running as process 4851. Stop it first.
您在 /var/spool/mail/root 中有新邮件
[[email protected] /] hadoop fs -ls #查看hdfs路径
ls: `.': No such file or directory