oozie与hue整合 执行WC案例报错: 连接10020端口被拒绝

Call From hdp-05/192.168.230.15 to hdp-01:10020 failed on connection exception: java.net.ConnectException:
 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

错误原因没有启动hadoop的history程序
JobHistoryServer进程监听端口就是10020

解决:
 mr-jobhistory-daemon.sh start historyserver
 jps  出现JobHistoryServer 
 确定服务已经启动
　呐