hbase经常使用命令


/usr/local/cloud/hbase/bin/hbase shell
用shell来连接hbase

exit
退出hbase shell

version
查看hbase版本号

hbase(main):045:0> is_enabled 't1'

true                                                                                                                                                                            

0 row(s) in 0.0020 seconds
測试表t1是否有效

hbase(main):046:0> is_disabled 't1'

false                                                                                                                                                                           

0 row(s) in 0.0010 seconds
測试表t1是否无效

hbase(main):044:0> exists 't1'

Table t1 does exist                                                                                                                                                             

0 row(s) in 0.0270 seconds
測试表t1是否存在

scan 'full_user_profile', {LIMIT=>1}
输出数据表full_user_profile中的1个RowKey

list
列出全部数据表

describe 'full_user_profile'
列出full_user_profile数据表的结构

hbase(main):003:0> disable 'score'

0 row(s) in 2.1080 seconds
使数据表score无效



hbase(main):004:0> drop 'score'

0 row(s) in 10.6740 seconds
删除数据表score（注意在删除表之前要使表无效）




hbase shell实践操作1


hbase(main):013:0> create 'score', 'name', 'course'

0 row(s) in 5.1050 seconds
创建数据表score。当中name是Row Key，course是列族



hbase(main):014:0> put 'score', 'xiaowen', 'course:China', '95'

0 row(s) in 33.4270 seconds
在列族course下创建列China，值为95



hbase(main):015:0> put 'score', 'xiaowen', 'course:Math', '99'

0 row(s) in 0.0130 seconds
在列族course下创建列Math，值为99

hbase(main):016:0> put 'score', 'xiaowen', 'course:English', '98'

0 row(s) in 0.0040 seconds

在列族course下创建列English，值为98

hbase(main):017:0> scan 'score'

ROW                                           COLUMN+CELL                                                                                                                       

xiaowen                                      column=course:China, timestamp=1400141524101, value=95                                                                            

xiaowen                                      column=course:English, timestamp=1400141591123, value=98                                                                          

xiaowen                                      column=course:Math, timestamp=1400141579107, value=99                                                                             

1 row(s) in 0.0250 seconds
查看score整张表的数据

hbase(main):018:0> get 'score', 'xiaowen'

COLUMN                                        CELL                                                                                                                              

course:China                                 timestamp=1400141524101, value=95                                                                                                 

course:English                               timestamp=1400141591123, value=98                                                                                                 

course:Math                                  timestamp=1400141579107, value=99                                                                                                 

3 row(s) in 0.0110 seconds
查看score表的xiaowen行数据

hbase(main):019:0> get 'score', 'xiaowen', 'course:Math'

COLUMN                                        CELL                                                                                                                              

course:Math                                  timestamp=1400141579107, value=99                                                                                                 

1 row(s) in 0.0070 seconds
查看score表的xiaowen行，course列族上的Math列的数据

hbase(main):008:0> scan 'score'

ROW                                           COLUMN+CELL                                                                                                                       

xiaowen                                      column=course:China, timestamp=1400141524101, value=95                                                                            

xiaowen                                      column=course:English, timestamp=1400141591123, value=98                                                                          

xiaowen                                      column=course:Math, timestamp=1400141579107, value=99                                                                             

xiaoye                                       column=course:China, timestamp=1400143888087, value=85                                                                            

xiaoye                                       column=course:English, timestamp=1400143921395, value=85                                                                          

xiaoye                                       column=course:Math, timestamp=1400143907407, value=85                                                                             

2 row(s) in 0.0240 seconds
查看score表的全部值

hbase(main):013:0> scan 'score', {COLUMNS=>'course'}

ROW                                           COLUMN+CELL                                                                                                                       

xiaowen                                      column=course:China, timestamp=1400141524101, value=95                                                                            

xiaowen                                      column=course:English, timestamp=1400141591123, value=98                                                                          

xiaowen                                      column=course:Math, timestamp=1400141579107, value=99                                                                             

xiaoye                                       column=course:China, timestamp=1400143888087, value=85                                                                            

xiaoye                                       column=course:English, timestamp=1400143921395, value=85                                                                          

xiaoye                                       column=course:Math, timestamp=1400143907407, value=85                                                                             

2 row(s) in 0.0230 seconds
查看score表的course列的全部值



hbase(main):014:0> scan 'score', {COLUMNS=>'course:Math'}

ROW                                           COLUMN+CELL                                                                                                                       

xiaowen                                      column=course:Math, timestamp=1400141579107, value=99                                                                             

xiaoye                                       column=course:Math, timestamp=1400143907407, value=85                                                                             

2 row(s) in 0.0270 seconds
查看score表course:Math列的全部值

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

2 row(s) in 0.1880 seconds
统计score表有多少行



hbase shell实践操作2：test表的实践



hbase(main):022:0> create 'test', 'c1', 'c2'

0 row(s) in 1.1260 seconds



hbase(main):023:0> put 'test', 'r1', 'c1:1', 'value1-1/1'

0 row(s) in 0.0360 seconds



hbase(main):024:0> put 'test', 'r1', 'c1:2', 'value1-1/2'

0 row(s) in 0.0210 seconds



hbase(main):025:0> put 'test', 'r1', 'c1:3', 'value1-1/3'

0 row(s) in 0.0170 seconds



hbase(main):026:0> put 'test', 'r1', 'c2:1', 'value1-2/1'

0 row(s) in 0.0100 seconds



hbase(main):027:0> put 'test', 'r1', 'c2:2', 'value1-2/2'

0 row(s) in 0.0060 seconds



hbase(main):028:0> put 'test', 'r2', 'c1:1', 'value2-1/1'

0 row(s) in 0.0110 seconds



hbase(main):029:0> put 'test', 'r2', 'c2:1', 'value2-2/1'

0 row(s) in 0.0080 seconds

hbase(main):030:0> scan 'test'

ROW                                           COLUMN+CELL                                                                                                                        

r1                                           column=c1:1, timestamp=1400152716678, value=value1-1/1                                                                             

r1                                           column=c1:2, timestamp=1400152749600, value=value1-1/2                                                                             

r1                                           column=c1:3, timestamp=1400152770555, value=value1-1/3                                                                             

r1                                           column=c2:1, timestamp=1400152793839, value=value1-2/1                                                                             

r1                                           column=c2:2, timestamp=1400152811436, value=value1-2/2                                                                             

r2                                           column=c1:1, timestamp=1400152843148, value=value2-1/1                                                                             

r2                                           column=c2:1, timestamp=1400152858073, value=value2-2/1                                                                             

2 row(s) in 0.0490 seconds

hbase(main):031:0> describe 'test'

DESCRIPTION                                                                                                        ENABLED                                                       

{NAME => 'test', FAMILIES => [{NAME => 'c1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'NONE', REPLICATION_SC true                                                          

OPE => '0', VERSIONS => '3', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => '2147483647', KEEP_DELETED_CELLS                                                                

=> 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', ENCODE_ON_DISK => 'true', BLOCKCACHE => 'true'}, {NAME =>                                                               

  'c2', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'NONE', REPLICATION_SCOPE => '0', VERSIONS => '3', COMPRESSI                                                               

ON => 'NONE', MIN_VERSIONS => '0', TTL => '2147483647', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536', IN_M                                                               

EMORY => 'false', ENCODE_ON_DISK => 'true', BLOCKCACHE => 'true'}]}                                                                                                             

1 row(s) in 0.2560 seconds

从describe命令可见test表有两个列族

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