跟着破站学hadoop但是到了初始化时报错？这怎么解啊

根据各种拍错帖子看了
1.配置hadoop-env.sh
2.配置core-size.xml
3.配置hdfs-size.xml都弄了，还是报错failed to start namenode
hdfs namenode -format时报错！求指导指导！

core-site.xml里面的hadoop.tmp.dir

<property>
        <name>hadoop.tmp.dir</name>
        <value>export/data/hadoop-3.3.0</value>
</property>

改成

<property>
        <name>hadoop.tmp.dir</name>
        <value>/export/data/hadoop-3.3.0</value>
</property>