1. 以下关系型数据库中的表和数据,要求将其转换为适合于HBase存储的表并插入数据:
学生表(Student)(不包括最后一列)
学号(S_No) | 姓名(S_Name) | 性别(S_Sex) | 年龄(S_Age) | 课程(course) |
2015001 | Zhangsan | male | 23 | |
2015003 | Mary | female | 22 | |
2015003 | Lisi | male | 24 | 数学(Math)85 |
create 'Student', ' S_No ','S_Name', ’S_Sex’,'S_Age'put 'Student','1','S_No','2015001'put 'Student','1','S_Name','Zhangsan'put 'Student','1','S_Sex','male'put 'Student','1','S_Age','23'put 'Student','2','S_No','2015003'put 'Student','2','S_Name','Mary'put 'Student','2','S_Sex','female'put 'Student','2','S_Age','22'put 'Student','3','S_No','2015003'put 'Student','3','S_Name','Lisi'put 'Student','3','S_Sex','male'put 'Student','3','S_Age','24'
2. 用Hadoop提供的HBase Shell命令完成相同任务:
- 列出HBase所有的表的相关信息;
- list
- 在终端打印出学生表的所有记录数据;
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scan 'Student'
- 向学生表添加课程列族;
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alter 'Student','NAME'=>'course'
- 向课程列族添加数学列并登记成绩为85;
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put 'Student','3','course:Math','85'
- 删除课程列;
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dorp 'Student','course'
- 统计表的行数;count 's1'
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count 's1'
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- 清空指定的表的所有记录数据;truncate 's1'
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truncate 's1'