报错全文：retry.RetryInvocationHandler: java.net.ConnectException:
Your endpoint configuration is wrong;
For more details see: http://wiki.apache.org/hadoop/UnsetHostnameOrPort, while invoking ApplicationClientProtocolPBClientImpl.getNewApplication over null after 7 failover attempts.
Trying to failover after sleeping for 24161ms.
原因分析：没有开yarn
解决方法：start-yarn.sh
总结：忘记开yarn就会一直循环，Already tried x time(s)
retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)之类
应注意！流程顺序。
参考：今天使用在hive中建表
