hadoop搭建异常 /tmp/hadoop-root/mapred/system/jobtracker.info could only be replicated to 0 nodes, inste
/tmp/hadoop-root/mapred/system/jobtracker.infocouldonlybereplicatedto0nodes,insteadof1java.net.NoRouteToHostException:Noroutetohost在hadoop集群中使用copyFromLocal命令的时候发生错误,识别不到datanode节点,重新初始化也没有用,此时删除临时文件夹