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  • 熟悉常用的HBase操作,编写MapReduce作业

    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','s001','S_No','2015001'
    put 'Student','s001','S_Name','Zhangsan'
    put 'Student','s001','S_Sex','male'
    put 'Student','s001','S_Age','23'
    
    put 'Student','s002','S_No','2015003'
    put 'Student','s002','S_Name','Mary'
    put 'Student','s002','S_Sex','female'
    put 'Student','s002','S_Age','22'
    
    put 'Student','s003','S_No','2015003'
    put 'Student','s003','S_Name','Lisi'
    put 'Student','s003','S_Sex','male'
    put 'Student','s003','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;
    • 向学生表添加课程列族;
    • 向课程列族添加数学列并登记成绩为85;
    • 删除课程列;
    • 统计表的行数;count 's1'
    • 清空指定的表的所有记录数据;truncate 's1'
    scan 'Student'
    alter 'Student','NAME'=>'course'
    put 'Student','3','course:Math','85'
    dorp 'Student','course'
    count 's1'
    truncate 's1'
    

      

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  • 原文地址:https://www.cnblogs.com/1103a/p/9010929.html
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