HBase Shell 基本操作

1. 進(jìn)入HBase客戶端命令行

   bin/hbase shell
   

2. 查看幫助命令

   hbase(main):001:0> help
   

3. 查看當(dāng)前數(shù)據(jù)庫中有哪些表

   hbase(main):001:0> list
   

表的操作

1. 創(chuàng)建表

   hbase(main):002:0> create 'student','info'   
   

2. 插入數(shù)據(jù)到表

   hbase(main):003:0> put 'student','1001','info:sex','male'
   hbase(main):004:0> put 'student','1001','info:age','18'
   hbase(main):005:0> put 'student','1002','info:name','Janna'
   hbase(main):006:0> put 'student','1002','info:sex','female'
   hbase(main):007:0> put 'student','1002','info:age','20'
   

3. 掃描查看表數(shù)據(jù)

   hbase(main):008:0> scan 'student'
   hbase(main):009:0> scan 'student',{STARTROW => '1001', STOPROW  => '1001'}
   hbase(main):010:0> scan 'student',{STARTROW => '1001'}
   

4. 查看表結(jié)構(gòu)

   hbase(main):011:0> describe ‘student’
   
   

5. 更新指定字段的數(shù)據(jù)

   hbase(main):012:0> put 'student','1001','info:name','Nick'
   hbase(main):013:0> put 'student','1001','info:age','100'
   

6. 查看“指定行”或“指定列族:列”的數(shù)據(jù)

   hbase(main):014:0> get 'student','1001'
   hbase(main):015:0> get 'student','1001','info:name'
   

7. 統(tǒng)計(jì)表數(shù)據(jù)行數(shù)

   hbase(main):021:0> count 'student'
   

8. 刪除數(shù)據(jù)

   刪除某rowkey的全部數(shù)據(jù)：
   hbase(main):016:0> deleteall 'student','1001'
   刪除某rowkey的某一列數(shù)據(jù)：
   hbase(main):017:0> delete 'student','1002','info:sex'
   

9. 清空表數(shù)據(jù)

   首先需要先讓該表為disable狀態(tài)：
   hbase(main):019:0> disable 'student'
   
   hbase(main):018:0> truncate 'student'
   提示：清空表的操作順序?yàn)橄萪isable，然后再truncate。
   

10. 刪除表

    首先需要先讓該表為disable狀態(tài)：
    hbase(main):019:0> disable 'student'
    然后才能drop這個(gè)表：
    hbase(main):020:0> drop 'student'
    提示：如果直接drop表，會(huì)報(bào)錯(cuò)：ERROR: Table student is enabled. Disable it first.
    

11. 變更表信息

    將info列族中的數(shù)據(jù)存放3個(gè)版本：

    hbase(main):022:0> alter 'student',{NAME=>'info',VERSIONS=>3}
    hbase(main):022:0> get 'student','1001',{COLUMN=>'info:name',VERSIONS=>3