只需把export HADOOP_OPTS=“ H A D O O P O P T S − D j a v a . n e t . p r e f e r I P v 4 S t a c k = t r u e " 更 改 为 e x p o r t H A D O O P O P T S = " HADOOP_OPTS -Djava.net.preferIPv4Stack=true" 更改为 export HADOOP_OPTS=" HADOOPOPTS−Djava.net.preferIPv4Stack=true"更改为exportHADOOPOPTS="HADOOP_OPTS -Djava.net.preferIPv4Stack=true”