青岛专业做外贸网站,建设银行签证预约网站,沈阳app定制,做一个网站怎么做HBASE是一个分布式系统
其中有一个管理角色#xff1a; HMaster(一般2台#xff0c;一台active#xff0c;一台backup)#xff08;我用的五台#xff09; 其他的数据节点角色#xff1a; HRegionServer(很多台#xff0c;看数据容量)
1.安装可以参考我的Hbase安装 HMaster(一般2台一台active一台backup)我用的五台 其他的数据节点角色 HRegionServer(很多台看数据容量)
1.安装可以参考我的Hbase安装很详细
安装遇见问题里面有详解
2.命令
2.1 hbase shell操作
2.1.1 命名空间
列出所以命名空间
list_namespaceNAMESPACE
default
hbase
2 row(s)
Took 0.3448 seconds新建命名空间
create_namespace chun1删除命名空间(命名空间必须为空)
drop_namespace chun12.1.2建表
create t_user,base_info,extra_info 表名 列族名 列族名web端可以看到表
2.1.3插入数据向表中添加数据只能一列一列的添加不能同时添加多列。
put t_user,001,base_info:username,zhangsanput t_user,001,base_info:age,18put t_user,001,base_info:sex,femaleput t_user,001,extra_info:career,itput t_user,002,extra_info:career,actoressput t_user,002,base_info:username,lisi2.1.4 查询1scan 扫描
scan t_userCOLUMNCELL 001 columnbase_info:age, timestamp1496567924507, value18 001 columnbase_info:sex, timestamp1496567934669, valuefemale 001 columnbase_info:username, timestamp1496567889554, valuezhangsan 001 columnextra_info:career, timestamp1496567963992, valueit 002 columnbase_info:username, timestamp1496568034187, valuelisi002 columnextra_info:career, timestamp1496568008631, valueactoress
2 row(s)
Took 0.0216 seconds2.1.5查询2get 单行数据
get t_user,001COLUMN CELLbase_info:age timestamp1566711900882, value18base_info:sex timestamp1566711951164, valuefemalebase_info:username timestamp1566711877639, valuezhangsanextra_info:career timestamp1566711986838, valueit
1 row(s)
Took 0.0974 seconds2.1.6删除删除一个kv数据
delete t_user,001,base_info:sexTook 0.0511 seconds2.1.7删除删除整行数据
deleteall t_user,001Took 0.0375 secondsscan t_userROW COLUMNCELL002 columnbase_info:username, timestamp1566712056903, valueliuyifei002 columnextra_info:career, timestamp1566712022370, valueactoress
1 row(s)
Took 0.0357 seconds2.1.8删除;删除整个表分两步先disable然后drop
disable t_user
drop t_user然后 list查看一下
list
TABLE
0 row(s)
Took 0.0125 seconds[]
