电商( eshop)平台具有海量数据、高并发访问、高速读写等特征，适合使用HBase分布式数据库进行数据存储。本节通过一个 HBase在电商平台的应用案例，熟练掌握并综合运用HBase Shell命令行终端提供的各种操作命令。
一、电商(eshop)平台的逻辑数据模型
在HBase创建一个自定义命名空间eshop，用于存放电商平台的用户表shopping(客户商品订单表)。用户表shopping 包括customer、order和 item共三个列族，用逻辑数据模型来表示表中存放的数据。如表1所示:
| 表1 用逻辑数据模型表示电商系统用户表shopping中存放的数据 | ||||||
| 行键（RowKey） | 列族：customer | 列族：order | 列族：item | |||
| 列限定符 | 单元格值 | 列限定符 | 单元格值 | 列限定符 | 单元格值 | |
| s001 | name | Jack | number | 1 | item_name | iphone8 |
| s001 | phone | 00000000001 | datetime | 2020-4-21 | price | 8000.00 |
| s001 | address | WuHan | pay-state | not payed | ||
| s001 | level | normal | ||||
| s002 | name | Tom | number | 2 | item_name | HAWEI MATE X2 |
| s002 | phone | 00000000002 | datetime | 2020-4-22 | price | 6000.00 |
| s002 | address | BeiJing | ||||
| s002 | preference | e-product | ||||
| s003 | name | Mike | number | 3 | item_name | XIAO MI 11 |
| s003 | phone | 00000000003 | datetime | 2020-4-23 | price | 5000.00 |
| s003 | address | ShangHai | ||||
| s003 | age | 20 | ||||
| s004 | name | Lucy | number | 4 | item_name | Lancome |
| s004 | phone | 00000000004 | datetime | 2020-4-23 | price | 10000.00 |
| s004 | address | HangZhou | pay-state | payed | ||
| s004 | preference | cosmetics | post-state | recieved | ||
| s004 | level | VIP | ||||
| s005 | name | Lily | number | 10 | item_name | LV |
| s005 | phone | 00000000005 | datetime | 2020-4-23 | price | 20000.00 |
| s005 | preference | handbag | pay-state | payed | ||
| s005 | level | VIP | post-state | delivered | ||
| s005 | abc@qq.com | |||||
二、使用HBase Shell操作电商平台数据
1.对电商平台数据执行简单读写操作
1）创建一个名称为eshop的名字空间，并列出HBase系统所有的名字空间。
hbase:003:0> create_namespace 'eshop' Took 3.5909 seconds hbase:004:0> list_namespace NAMESPACE default eshop hbase 3 row(s) Took 0.0606 seconds
2）在eshop名字空间中创建表名为shopping的用户表，包含1个列族customer;再列出HBase的所有数据表。
hbase:012:0> create 'eshop:shopping','customer' 2024-03-22 01:33:35,528 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: CREATE, Table Name: eshop:shopping, procId: 216 completed Created table eshop:shopping Took 2.5136 seconds => Hbase::Table - eshop:shopping hbase:013:0> list TABLE eshop:shopping 1 row(s) Took 0.0670 seconds => ["eshop:shopping"]
3）给eshop 名字空间中的shopping表增加两个新的列族order和 item；再查看其表格结构。
hbase:018:0> alter 'eshop:shopping','order','item'
Updating all regions with the new schema...
1/1 regions updated.
Done.
Took 3.4106 seconds
hbase:019:0> desc 'eshop:shopping'
Table eshop:shopping is ENABLED
eshop:shopping, {TABLE_ATTRIBUTES => {METADATA => {'hbase.store.file-tracker.impl' => 'DEFAULT'
}}}
COLUMN FAMILIES DESCRIPTION
{NAME => 'customer', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FA
LSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE =
> '0', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true',
BLOCKSIZE => '65536 B (64KB)'}
{NAME => 'item', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE'
, DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0
', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLO
CKSIZE => '65536 B (64KB)'}
{NAME => 'order', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE
', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '
0', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BL
OCKSIZE => '65536 B (64KB)'}
3 row(s)
4）先删除 shopping表后再重新创建shopping表，包含3个列族customer，order和 item。
hbase:020:0> disable 'eshop:shopping' 2024-03-22 01:38:46,086 INFO [main] client.HBaseAdmin (HBaseAdmin.java:rpcCall(926)) - Started disable of eshop:shopping 2024-03-22 01:38:46,764 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: DISABLE, Table Name: eshop:shopping, procId: 228 completed Took 0.7314 seconds hbase:021:0> drop 'eshop:shopping' 2024-03-22 01:38:58,599 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: DELETE, Table Name: eshop:shopping, procId: 231 completed Took 0.4091 seconds hbase:022:0> list TABLE 0 row(s) Took 0.0491 seconds => [] hbase:023:0> create 'eshop:shopping','customer','order','item' 2024-03-22 01:39:52,129 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: CREATE, Table Name: eshop:shopping, procId: 232 completed Created table eshop:shopping Took 2.2332 seconds => Hbase::Table - eshop:shopping
5）修改shopping表的表级别属性，将文件大小最大值修改为134217728字节。
hbase:024:0> alter 'eshop:shopping',MAX_FILESIZE=>134217728 Updating all regions with the new schema... 1/1 regions updated. Done. Took 2.2104 seconds
6）描述shopping表的列族属性信息。
hbase:025:0> desc 'eshop:shopping'
Table eshop:shopping is ENABLED
eshop:shopping, {TABLE_ATTRIBUTES => {MAX_FILESIZE => '134217728 B (128MB)', METADATA => {'hbas
e.store.file-tracker.impl' => 'DEFAULT'}}}
COLUMN FAMILIES DESCRIPTION
{NAME => 'customer', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FA
LSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE =
> '0', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true',
BLOCKSIZE => '65536 B (64KB)'}
{NAME => 'item', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE'
, DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0
', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLO
CKSIZE => '65536 B (64KB)'}
{NAME => 'order', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE
', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '
0', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BL
OCKSIZE => '65536 B (64KB)'}
3 row(s)
Quota is disabled
Took 0.0846 seconds 7）将用户表shopping逻辑数据模型中的所有数据写入到shooping表中。
hbase:026:0> put 'eshop:shopping','s001','customer:name','Jack' Took 0.6497 seconds hbase:027:0> put 'eshop:shopping','s001','customer:phone','00000000001' Took 0.0513 seconds hbase:028:0> put 'eshop:shopping','s001','customer:address','WuHan' Took 0.0231 seconds hbase:029:0> put 'eshop:shopping','s001','customer:level','normal' Took 0.0139 seconds hbase:030:0> put 'eshop:shopping','s001','order:number','1' Took 0.0282 seconds hbase:031:0> put 'eshop:shopping','s001','order:datetime','2020-4-21' Took 0.0488 seconds hbase:032:0> put 'eshop:shopping','s001','order:pay-state','not-payed' Took 0.0215 seconds hbase:033:0> put 'eshop:shopping','s001','item:item_name','iphone8' Took 0.0396 seconds hbase:034:0> put 'eshop:shopping','s001','item:price','8000.00' Took 0.0133 seconds hbase:040:0> put 'eshop:shopping','s002','customer:name','Tom' Took 0.0170 seconds hbase:041:0> put 'eshop:shopping','s002','customer:phone','00000000002' Took 0.0196 seconds hbase:042:0> put 'eshop:shopping','s002','customer:address','BeiJing' Took 0.0214 seconds hbase:043:0> put 'eshop:shopping','s002','customer:preference','e-product' Took 0.0196 seconds hbase:044:0> put 'eshop:shopping','s002','order:number','2' Took 0.0150 seconds hbase:045:0> put 'eshop:shopping','s002','order:datetime','2020-4-22' Took 0.0149 seconds hbase:046:0> put 'eshop:shopping','s002','item:item_name','HUAWEI MATE X2' Took 0.0471 seconds hbase:047:0> put 'eshop:shopping','s002','item:price','6000.00' Took 0.0421 seconds hbase:053:0> put 'eshop:shopping','s003','customer:name','Mike' Took 0.0621 seconds hbase:054:0> put 'eshop:shopping','s003','customer:phone','00000000003' Took 0.0216 seconds hbase:055:0> put 'eshop:shopping','s003','customer:address','Shanghai' Took 0.0172 seconds hbase:056:0> put 'eshop:shopping','s003','customer:age','20' Took 0.0390 seconds hbase:057:0> put 'eshop:shopping','s003','order:number','3' Took 0.0605 seconds hbase:058:0> put 'eshop:shopping','s003','order:datetime','2020-4-23' Took 0.0120 seconds hbase:059:0> put 'eshop:shopping','s003','item:item_name','XIAO MI 11' Took 0.0084 seconds hbase:060:0> put 'eshop:shopping','s003','item:price','5000.00' Took 0.0207 seconds hbase:061:0> put 'eshop:shopping','s004','customer:name','Lucy' Took 0.0157 seconds hbase:062:0> put 'eshop:shopping','s004','customer:phone','00000000004' Took 0.0085 seconds hbase:063:0> put 'eshop:shopping','s004','customer:address','HangZhou' Took 0.0165 seconds hbase:064:0> put 'eshop:shopping','s004','customer:preference','cosmetics' Took 0.0166 seconds hbase:065:0> put 'eshop:shopping','s004','customer:level','VIP' Took 0.0113 seconds hbase:066:0> put 'eshop:shopping','s004','order:number','4' Took 0.0145 seconds hbase:067:0> put 'eshop:shopping','s004','order:datetime','202-4-23' Took 0.0300 seconds hbase:068:0> put 'eshop:shopping','s004','order:pay-state','payed' Took 0.0086 seconds hbase:069:0> put 'eshop:shopping','s004','order:post_state','recieved' Took 0.0148 seconds hbase:070:0> put 'eshop:shopping','s004','item:item_name','Lancome' Took 0.0251 seconds hbase:071:0> put 'eshop:shopping','s004','item:price','10000.00' Took 0.0289 seconds hbase:072:0> put 'eshop:shopping','s005','customer:name','Lily' Took 0.0249 seconds hbase:073:0> put 'eshop:shopping','s005','customer:phone','00000000005' Took 0.0286 seconds hbase:074:0> put 'eshop:shopping','s005','customer:preference','handbag' Took 0.0263 seconds hbase:075:0> put 'eshop:shopping','s005','customer:level','VIP' Took 0.0178 seconds hbase:076:0> put 'eshop:shopping','s005','customer:email','abc@qq.com' Took 0.0237 seconds hbase:077:0> put 'eshop:shopping','s005','order:number','10' Took 0.0098 seconds hbase:078:0> put 'eshop:shopping','s005','order:datetime','2020-4-23' Took 0.0211 seconds hbase:079:0> put 'eshop:shopping','s005','order:pay-state','payed' Took 0.0245 seconds hbase:080:0> put 'eshop:shopping','s005','order:post-state','delivered' Took 0.0256 seconds hbase:081:0> put 'eshop:shopping','s005','item:item_name','LV' Took 0.0258 seconds hbase:082:0> put 'eshop:shopping','s005','item:price','20000.00' Took 0.0199 seconds
8）对shopping表进行全表扫描(读取所有数据行的所有数据列单元格)。
hbase:084:0> scan 'eshop:shopping' ROW COLUMN+CELL s001 column=customer:address, timestamp=2024-03-22T01:53:27.728, value=WuHan s001 column=customer:level, timestamp=2024-03-22T01:54:02.171, value=normal s001 column=customer:name, timestamp=2024-03-22T02:01:27.551, value=Jack s001 column=customer:phone, timestamp=2024-03-22T01:52:48.474, value=00000000001 s001 column=item:item_name, timestamp=2024-03-22T01:57:17.558, value=iphone8 s001 column=item:price, timestamp=2024-03-22T01:57:36.270, value=8000.00 s001 column=order:datetime, timestamp=2024-03-22T01:56:12.975, value=2020-4-21 s001 column=order:number, timestamp=2024-03-22T01:55:44.843, value=1 s001 column=order:pay-state, timestamp=2024-03-22T01:56:41.609, value=not-payed s002 column=customer:address, timestamp=2024-03-22T02:03:43.489, value=BeiJing s002 column=customer:name, timestamp=2024-03-22T02:02:58.983, value=Tom s002 column=customer:phone, timestamp=2024-03-22T02:03:20.715, value=00000000002 s002 column=customer:preference, timestamp=2024-03-22T02:04:05.414, value=e-product s002 column=item:item_name, timestamp=2024-03-22T02:05:43.969, value=HUAWEI MATE X2 s002 column=item:price, timestamp=2024-03-22T02:06:41.294, value=6000.00 s002 column=order:datetime, timestamp=2024-03-22T02:05:05.397, value=2020-4-22 s002 column=order:number, timestamp=2024-03-22T02:04:44.084, value=2 s003 column=customer:address, timestamp=2024-03-22T02:23:25.999, value=Shanghai s003 column=customer:age, timestamp=2024-03-22T02:23:39.768, value=20 s003 column=customer:name, timestamp=2024-03-22T02:22:45.243, value=Mike s003 column=customer:phone, timestamp=2024-03-22T02:23:08.255, value=00000000003 s003 column=item:item_name, timestamp=2024-03-22T02:24:45.930, value=XIAO MI 11 s003 column=item:price, timestamp=2024-03-22T02:25:02.682, value=5000.00 s003 column=order:datetime, timestamp=2024-03-22T02:24:17.560, value=2020-4-23 s003 column=order:number, timestamp=2024-03-22T02:24:00.754, value=3 s004 column=customer:address, timestamp=2024-03-22T02:26:34.380, value=HangZhou s004 column=customer:level, timestamp=2024-03-22T02:27:35.830, value=VIP s004 column=customer:name, timestamp=2024-03-22T02:25:44.580, value=Lucy s004 column=customer:phone, timestamp=2024-03-22T02:26:07.073, value=00000000004 s004 column=customer:preference, timestamp=2024-03-22T02:27:17.408, value=cosmetics s004 column=item:item_name, timestamp=2024-03-22T02:29:59.988, value=Lancome s004 column=item:price, timestamp=2024-03-22T02:30:16.339, value=10000.00 s004 column=order:datetime, timestamp=2024-03-22T02:28:40.420, value=202-4-23 s004 column=order:number, timestamp=2024-03-22T02:28:20.236, value=4 s004 column=order:pay-state, timestamp=2024-03-22T02:28:59.712, value=payed s004 column=order:post_state, timestamp=2024-03-22T02:29:21.588, value=recieved s005 column=customer:email, timestamp=2024-03-22T02:33:56.564, value=abc@qq.com s005 column=customer:level, timestamp=2024-03-22T02:33:34.457, value=VIP s005 column=customer:name, timestamp=2024-03-22T02:31:36.776, value=Lily s005 column=customer:phone, timestamp=2024-03-22T02:32:24.128, value=00000000005 s005 column=customer:preference, timestamp=2024-03-22T02:33:09.550, value=handbag s005 column=item:item_name, timestamp=2024-03-22T02:36:24.703, value=LV s005 column=item:price, timestamp=2024-03-22T02:36:40.468, value=20000.00 s005 column=order:datetime, timestamp=2024-03-22T02:34:45.746, value=2020-4-23 s005 column=order:number, timestamp=2024-03-22T02:34:23.380, value=10 s005 column=order:pay-state, timestamp=2024-03-22T02:35:07.771, value=payed s005 column=order:post-state, timestamp=2024-03-22T02:35:59.275, value=delivered 5 row(s) Took 0.1527 seconds
9）读取shopping表的行键为s004的所有数据列的单元格值。
hbase:085:0> get 'eshop:shopping','s004' COLUMN CELL customer:address timestamp=2024-03-22T02:26:34.380, value=HangZhou customer:level timestamp=2024-03-22T02:27:35.830, value=VIP customer:name timestamp=2024-03-22T02:25:44.580, value=Lucy customer:phone timestamp=2024-03-22T02:26:07.073, value=00000000004 customer:preference timestamp=2024-03-22T02:27:17.408, value=cosmetics item:item_name timestamp=2024-03-22T02:29:59.988, value=Lancome item:price timestamp=2024-03-22T02:30:16.339, value=10000.00 order:datetime timestamp=2024-03-22T02:28:40.420, value=202-4-23 order:number timestamp=2024-03-22T02:28:20.236, value=4 order:pay-state timestamp=2024-03-22T02:28:59.712, value=payed order:post_state timestamp=2024-03-22T02:29:21.588, value=recieved 1 row(s) Took 0.3746 seconds
10）读取shopping表的行键s005，列族customer，列限定符preference 的数据列的单元格值。
hbase:087:0> get 'eshop:shopping','s005','customer:preference' COLUMN CELL customer:preference timestamp=2024-03-22T02:33:09.550, value=handbag 1 row(s) Took 0.0361 seconds
2.对电商平台数据执行复杂读写操作
1）修改shopping表的列族属性，将列族order的列族属性VERSIONS修改为3。
hbase:090:0> alter 'eshop:shopping',NAME=>'order',VERSIONS=>3 Updating all regions with the new schema... 1/1 regions updated. Done. Took 6.8406 seconds
2）修改shopping 表的列族属性，将列族order的列族属性TTL生存时间修改为1周,压缩模式修改为gz。
hbase:093:0> alter 'eshop:shopping',NAME=>'info',TTL=>60*60*24*7,COMPRESSION=>'gz' Updating all regions with the new schema... 1/1 regions updated. Done. Took 3.3336 seconds
3）将shopping表的行键为s001，列族为order，列限定符为number 的数据列的单元格值依次修改为2和3。
hbase:094:0> put 'eshop:shopping','s001','order:number',2 Took 0.0721 seconds hbase:095:0> put 'eshop:shopping','s001','order:number',3 Took 0.0368 seconds
4）读取shopping表客户Jack（行键为s001）的订单中商品数量的最近3次的版本值。
hbase:096:0> get 'eshop:shopping','s001',{COLUMN=>'order:number',VERSIONS=>3}
COLUMN CELL
order:number timestamp=2024-03-22T02:54:22.959, value=3
order:number timestamp=2024-03-22T02:54:19.466, value=2
order:number timestamp=2024-03-22T01:55:44.843, value=1
1 row(s)
Took 0.1118 seconds 5）对shopping表指定行键范围s002到s004的数据行进行扫描，扫描结果包括第s002行，也包括第s004行。
hbase:098:0> scan 'eshop:shopping',{STARTROW=>'s002',STOPROW=>'s005'}
ROW COLUMN+CELL
s002 column=customer:address, timestamp=2024-03-22T02:03:43.489, value=BeiJing
s002 column=customer:name, timestamp=2024-03-22T02:02:58.983, value=Tom
s002 column=customer:phone, timestamp=2024-03-22T02:03:20.715, value=00000000002
s002 column=customer:preference, timestamp=2024-03-22T02:04:05.414, value=e-product
s002 column=item:item_name, timestamp=2024-03-22T02:05:43.969, value=HUAWEI MATE X2
s002 column=item:price, timestamp=2024-03-22T02:06:41.294, value=6000.00
s002 column=order:datetime, timestamp=2024-03-22T02:05:05.397, value=2020-4-22
s002 column=order:number, timestamp=2024-03-22T02:04:44.084, value=2
s003 column=customer:address, timestamp=2024-03-22T02:23:25.999, value=Shanghai
s003 column=customer:age, timestamp=2024-03-22T02:23:39.768, value=20
s003 column=customer:name, timestamp=2024-03-22T02:22:45.243, value=Mike
s003 column=customer:phone, timestamp=2024-03-22T02:23:08.255, value=00000000003
s003 column=item:item_name, timestamp=2024-03-22T02:24:45.930, value=XIAO MI 11
s003 column=item:price, timestamp=2024-03-22T02:25:02.682, value=5000.00
s003 column=order:datetime, timestamp=2024-03-22T02:24:17.560, value=2020-4-23
s003 column=order:number, timestamp=2024-03-22T02:24:00.754, value=3
s004 column=customer:address, timestamp=2024-03-22T02:26:34.380, value=HangZhou
s004 column=customer:level, timestamp=2024-03-22T02:27:35.830, value=VIP
s004 column=customer:name, timestamp=2024-03-22T02:25:44.580, value=Lucy
s004 column=customer:phone, timestamp=2024-03-22T02:26:07.073, value=00000000004
s004 column=customer:preference, timestamp=2024-03-22T02:27:17.408, value=cosmetics
s004 column=item:item_name, timestamp=2024-03-22T02:29:59.988, value=Lancome
s004 column=item:price, timestamp=2024-03-22T02:30:16.339, value=10000.00
s004 column=order:datetime, timestamp=2024-03-22T02:28:40.420, value=202-4-23
s004 column=order:number, timestamp=2024-03-22T02:28:20.236, value=4
s004 column=order:pay-state, timestamp=2024-03-22T02:28:59.712, value=payed
s004 column=order:post_state, timestamp=2024-03-22T02:29:21.588, value=recieved
3 row(s)
Took 0.2564 seconds 6）对shopping表的列族customer 中的所有数据列进行扫描。
hbase:099:0> scan 'eshop:shopping',{COLUMNS=>'customer'}
ROW COLUMN+CELL
s001 column=customer:address, timestamp=2024-03-22T01:53:27.728, value=WuHan
s001 column=customer:level, timestamp=2024-03-22T01:54:02.171, value=normal
s001 column=customer:name, timestamp=2024-03-22T02:01:27.551, value=Jack
s001 column=customer:phone, timestamp=2024-03-22T01:52:48.474, value=00000000001
s002 column=customer:address, timestamp=2024-03-22T02:03:43.489, value=BeiJing
s002 column=customer:name, timestamp=2024-03-22T02:02:58.983, value=Tom
s002 column=customer:phone, timestamp=2024-03-22T02:03:20.715, value=00000000002
s002 column=customer:preference, timestamp=2024-03-22T02:04:05.414, value=e-product
s003 column=customer:address, timestamp=2024-03-22T02:23:25.999, value=Shanghai
s003 column=customer:age, timestamp=2024-03-22T02:23:39.768, value=20
s003 column=customer:name, timestamp=2024-03-22T02:22:45.243, value=Mike
s003 column=customer:phone, timestamp=2024-03-22T02:23:08.255, value=00000000003
s004 column=customer:address, timestamp=2024-03-22T02:26:34.380, value=HangZhou
s004 column=customer:level, timestamp=2024-03-22T02:27:35.830, value=VIP
s004 column=customer:name, timestamp=2024-03-22T02:25:44.580, value=Lucy
s004 column=customer:phone, timestamp=2024-03-22T02:26:07.073, value=00000000004
s004 column=customer:preference, timestamp=2024-03-22T02:27:17.408, value=cosmetics
s005 column=customer:email, timestamp=2024-03-22T02:33:56.564, value=abc@qq.com
s005 column=customer:level, timestamp=2024-03-22T02:33:34.457, value=VIP
s005 column=customer:name, timestamp=2024-03-22T02:31:36.776, value=Lily
s005 column=customer:phone, timestamp=2024-03-22T02:32:24.128, value=00000000005
s005 column=customer:preference, timestamp=2024-03-22T02:33:09.550, value=handbag
5 row(s)
Took 0.0883 seconds 7）对shopping表的列族customer中列名为phone的所有数据列进行扫描。
hbase:100:0> scan 'eshop:shopping',{COLUMNS=>'customer:phone'}
ROW COLUMN+CELL
s001 column=customer:phone, timestamp=2024-03-22T01:52:48.474, value=00000000001
s002 column=customer:phone, timestamp=2024-03-22T02:03:20.715, value=00000000002
s003 column=customer:phone, timestamp=2024-03-22T02:23:08.255, value=00000000003
s004 column=customer:phone, timestamp=2024-03-22T02:26:07.073, value=00000000004
s005 column=customer:phone, timestamp=2024-03-22T02:32:24.128, value=00000000005
5 row(s)
Took 0.0275 seconds 8）对shopping表的前3行数据进行扫描。
hbase:101:0> scan 'eshop:shopping',{LIMIT=>3}
ROW COLUMN+CELL
s001 column=customer:address, timestamp=2024-03-22T01:53:27.728, value=WuHan
s001 column=customer:level, timestamp=2024-03-22T01:54:02.171, value=normal
s001 column=customer:name, timestamp=2024-03-22T02:01:27.551, value=Jack
s001 column=customer:phone, timestamp=2024-03-22T01:52:48.474, value=00000000001
s001 column=item:item_name, timestamp=2024-03-22T01:57:17.558, value=iphone8
s001 column=item:price, timestamp=2024-03-22T01:57:36.270, value=8000.00
s001 column=order:datetime, timestamp=2024-03-22T01:56:12.975, value=2020-4-21
s001 column=order:number, timestamp=2024-03-22T02:54:22.959, value=3
s001 column=order:pay-state, timestamp=2024-03-22T01:56:41.609, value=not-payed
s002 column=customer:address, timestamp=2024-03-22T02:03:43.489, value=BeiJing
s002 column=customer:name, timestamp=2024-03-22T02:02:58.983, value=Tom
s002 column=customer:phone, timestamp=2024-03-22T02:03:20.715, value=00000000002
s002 column=customer:preference, timestamp=2024-03-22T02:04:05.414, value=e-product
s002 column=item:item_name, timestamp=2024-03-22T02:05:43.969, value=HUAWEI MATE X2
s002 column=item:price, timestamp=2024-03-22T02:06:41.294, value=6000.00
s002 column=order:datetime, timestamp=2024-03-22T02:05:05.397, value=2020-4-22
s002 column=order:number, timestamp=2024-03-22T02:04:44.084, value=2
s003 column=customer:address, timestamp=2024-03-22T02:23:25.999, value=Shanghai
s003 column=customer:age, timestamp=2024-03-22T02:23:39.768, value=20
s003 column=customer:name, timestamp=2024-03-22T02:22:45.243, value=Mike
s003 column=customer:phone, timestamp=2024-03-22T02:23:08.255, value=00000000003
s003 column=item:item_name, timestamp=2024-03-22T02:24:45.930, value=XIAO MI 11
s003 column=item:price, timestamp=2024-03-22T02:25:02.682, value=5000.00
s003 column=order:datetime, timestamp=2024-03-22T02:24:17.560, value=2020-4-23
s003 column=order:number, timestamp=2024-03-22T02:24:00.754, value=3
3 row(s)
Took 0.1883 seconds 9）统计shopping表中的数据行数。
hbase:102:0> count 'eshop:shopping' 5 row(s) Took 0.1783 seconds => 5
10）删除shopping表的行键为s005，列族为customer，列限定符为email的数据列。
hbase:103:0> delete 'eshop:shopping','s005','customer:email' Took 0.1145 seconds
3.对电商平台数据执行其他高级操作
1）对shopping表的行键为s003,列族为item,列限定符为item_name的数据列单元格值追加内容Ultra。
hbase:162:0> append 'eshop:shopping','s003','item:item_name','Ultra' CURRENT VALUE = XIAO MI 11Ultra Took 0.2864 seconds
2）查看HBase集群状态(status)的详细信息，并查看HBase的当前软件版本(version)信息。
hbase:163:0> status 1 active master, 0 backup masters, 1 servers, 0 dead, 3.0000 average load Took 0.0503 seconds hbase:164:0> version 2.5.6, r6bac842797dc26bedb7adc0759358e4c8fd5a992, Sat Oct 14 23:36:46 PDT 2023
3）创建一个新的命名空间new_ns,并列出HBase当前所有的命名空间。
hbase:165:0> create_namespace 'new_ns' Took 0.1475 seconds hbase:166:0> list_namespace NAMESPACE default eshop hbase new_ns 4 row(s) Took 0.0316 seconds
4）删除名称为new_ns的命名空间。
hbase:167:0> drop_namespace 'new_ns' Took 0.1751 seconds
5）给默认命名空间default增加一个属性名user，属性值为root。
hbase:168:0> alter_namespace 'default',METHOD=>'set','user'=>'root' Took 0.1915 seconds
6）描述命名空间default的属性信息。
hbase:169:0> describe_namespace 'default'
DESCRIPTION
{NAME => 'default', user => 'root'}
Quota is disabled
Took 0.0151 seconds 7）列出系统命名空间hbase中包含的所有数据表。
hbase:172:0> list_namespace_tables 'hbase' TABLE meta namespace 2 row(s) Took 0.0349 seconds => ["meta", "namespace"]