输入hadoop classpath找到路径 将刚刚找到的hadoop classpath路径复制黏贴到mapred-site.xml中
<property> <name>yarn.app.mapreduce.am.env</name> <value>HADOOP_MAPRED_HOME=黏贴hadoop classpath</value> </property> <property> <name>mapreduce.map.env</name> <value>HADOOP_MAPRED_HOME=黏贴hadoop classpath</value> </property> <property> <name>mapreduce.reduce.env</name> <value>HADOOP_MAPRED_HOME=黏贴hadoop classpath</value> </property>再次进入share中运行jar
