Hbase 使用

安装

brew install hbase

启动

nohup hbase master start > /dev/null &

jps

59536
75489 Jps
74454 Main
75355 HMaster

基本操作

进入shell

hbase shell

列出表

list

状态

status

创建表


create 'student','description','course'

插入数据

put 'student', 'row1', 'description:age', '18'  
put 'student', 'row1', 'description:name', 'liu'
put 'student', 'row1', 'course:chinese', '100'

扫描全表

scan 'student'

ROW                                                  COLUMN+CELL
 row1                                                column=course:chinese, timestamp=1510037428906, value=100
 row1                                                column=description:age, timestamp=1510037306159, value=18
 row1                                                column=description:name, timestamp=1510037415404, value=liu
1 row(s) in 0.0410 seconds

获取指定行

get 'student','row1'

COLUMN                                               CELL
 course:chinese                                      timestamp=1510037428906, value=100
 description:age                                     timestamp=1510037306159, value=18
 description:name                                    timestamp=1510037415404, value=liu

获取指定列

get 'student','row1',{COLUMN => 'course'}

COLUMN                                               CELL
 course:chinese                                      timestamp=1510037428906, value=100
1 row(s) in 0.0080 seconds

获取列蔟

 get 'student','row1','description'

COLUMN                                               CELL
 description:age                                     timestamp=1510037306159, value=18
 description:name                                    timestamp=1510037415404, value=liu
2 row(s) in 0.0300 seconds

失效／生效

disable 'student'
enable 'student'

删除

drop 'student'

统计

count 'student'

/hbase org.apache.hadoop.hbase.mapreduce.RowCounter ‘student’