感谢：http://www.myexception.cn/database/1600202.html

官网配置指导：http://sqoop.apache.org/docs/1.99.3/Installation.html

官网deam:http://sqoop.apache.org/docs/1.99.1/Sqoop5MinutesDemo.html

show version -all出错

exception has occurred during processing command

exception:com.sun.jersey.api.client.clienthandlerexception message:java.net.connectexception：拒绝连接