摘要:
hadoop集群中主要进程有master: NameNode, ResourceManager,slaves: DataNode, NodeManager, RunJar, MRAppMaster,YarnChild其中 RunJar, MRAppMaster,YarnChild与随着某个job的创... 阅读全文
摘要:
(一)简单入门1、创建一个表create table if not exists ljh_emp(name string,salary float,gender string)comment 'basic information of a employee'row format delimited ... 阅读全文