• Hbase基本命令


    启动hbase:start-hbase.sh

    停止hbase:stop-hbase.sh

    进入hbase命令行端口:hbase shell

    查看帮助信息:help

    查看服务器状态:status

    查看版本信息:version

    查看当前用户:whoami

    查看表相关命令的帮助信息:table_help

    创建表

    常用语法:create  '[namespacename:]tablename' [ ,'columnfamilyname1' [  ,'columnfamilyname2, ....]]

    详细语法使用help -create 查看create语句

    hbase(main):006:0> create 'test','fam1','fam2' 
    0 row(s) in 8.3530 seconds 
      
    => Hbase::Table – test

    使用list命令列出表名:

    常用语法:list   '[namespacename:]tablename]

    详细语法可以使用help 'list' 查看,list 后面可以跟正则表达式,列出符合表达式的表名

    hbase(main):011:0> list 'test' –列出名为test的表名 
    TABLE                                                                                                                                                              
    test                                                                                                                                                               
    1 row(s) in 0.0110 seconds 
      
    => ["test"] 
    hbase(main):012:0> list 'tes.*'—列出以名称tes开头的表名 
    TABLE                                                                                                                                                              
    test                                                                                                                                                               
    test:testtable                                                                                                                                                       
    2 row(s) in 0.0150 seconds 
      
    => ["test","test:testtable"] 
    hbase(main):013:0> list 'default:.*' –列出default命名空间下的表名 
    TABLE                                                                                                                                                               
    ambarismoketest                                                                                                                                                    
    test                                                                                                                                                               
    2 row(s) in 0.0150 seconds 
      
    => ["ambarismoketest","test"] 
    hbase(main):014:0> list 'test:.*' –列出test这个命名空间下的表名 
    TABLE                                                                                                                                                              
    test:testtable                                                                                                                                                       
    1 row(s) in 0.0140 seconds 
      
    => ["test:testtable"]

    列出数据库名:list_namespace

    hbase(main):002:0> list_namespace
    NAMESPACE                                                        
    default                                                          
    hbase                                                            
    2 row(s) in 0.5620 seconds

    使用desc命令查看指定表的具体信息(desc等同于describe)

    语法:desc '[namespacename:]tablename'

              describe '[namespacename:]tablename'

    详细语法使用help  'describe'查看

    hbase(main):016:0> desc 'test'  查看test这张表的信息 
    Table test is ENABLED                                                                                                                                                
    test                                                                                                                                                               
    COLUMN FAMILIES DESCRIPTION                                                                                                                                        
    {NAME => 'fam1', BLOOMFILTER =>'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS =>'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRE 
    SSION => 'NONE', MIN_VERSIONS => '0',BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE =>'0'}                                                         
    {NAME => 'fam2', BLOOMFILTER =>'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS =>'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRE 
    SSION => 'NONE', MIN_VERSIONS => '0',BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE =>'0'}                                                         
    2 row(s) in 0.1710 seconds 
      
    hbase(main):017:0> desc 'test:testtable'查看test命名空间下testtable这张表的信息 
    Table test:testtable is ENABLED                                                                                                                                     
    test:testtable                                                                                                                                                      
    COLUMN FAMILIES DESCRIPTION                                                                                                                                         
    {NAME => 'colfam1', BLOOMFILTER =>'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS =>'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COM 
    PRESSION => 'NONE', MIN_VERSIONS =>'0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE =>'0'}                                                      
    {NAME => 'colfam2', BLOOMFILTER =>'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS =>'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COM 
    PRESSION => 'NONE', MIN_VERSIONS =>'0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE =>'0'}                                                       
    {NAME => 'colfam3', BLOOMFILTER =>'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS =>'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COM 
    PRESSION => 'NONE', MIN_VERSIONS =>'0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE =>'0'}                                                      
    3 row(s) in 0.0290 seconds

    使用put插入数据

    常用语法:put '[namespacename:]tablename' , 'rowkey' , 'columnfamilyname[:column]' , 'value'

    详细语法使用help 'put'查看

    hbase(main):002:0> put'test','row2','fam1:a','value' 
    0 row(s) in 0.3760 seconds 
    hbase(main):003:0> put 'test','row1','fam1:a','value' 
    0 row(s) in 0.3760 seconds 
    hbase(main):004:0> put 'test','row1','fam2:a','value' 
    0 row(s) in 0.3760 seconds 
    hbase(main):005:0> put'test','row2','fam2:a','value' 
    0 row(s) in 0.3760 seconds

    使用scan查看全表数据

    常用语法:scan '[namespacename:]tablename'

    详细语法使用help 'scan'查看

    hbase(main):002:0> scan 'test' 
    ROW                                       COLUMN+CELL                                                                                                             
     row1                                     column=fam1:a, timestamp=1504767451331, value=value                                                                      
     row1                                     column=fam2:a, timestamp=1504767471977, value=value                                                                      
     row2                                     column=fam1:a, timestamp=1504767600686, value=value                                                                      
     row2                                     column=fam2:a, timestamp=1504767715014, value=value                                                                      
    2 row(s) in 0.1120 seconds

    查看指定列的数据:

    hbase(main):004:0> scan 'test',{COLUMNS=> 'fam1:a'} 
    ROW                                       COLUMN+CELL                                                                                                              
     row1                                     column=fam1:a, timestamp=1504767451331, value=value                                                                      
     row2                                      column=fam1:a,timestamp=1504767600686, value=value                                                                      
    2 row(s) in 0.2390 seconds 
      
    hbase(main):021:0> get 'test','row1' 
    COLUMN                                     CELL                                                                                                                    
     fam1:a                                   timestamp=1504768075731, value=x00x00x00x00x00x00x00x02                                                          
     fam2:a                                   timestamp=1504767471977, value=value                                                                                     
    2 row(s) in 0.1110 seconds

    查看多个多个版本数据:get 'table1', 'rowkey007',{COLUMN=>'f1',VERSIONS=>2}

    修改表的版本version数量:
    alter 'table1',{NAME=>'f1',VERSIONS=>5}

    使用get查询数据:

    语法:get  '[namespacename:]tablename' , 'rowkey' [, 'columnfamliyname[:column]']

    详细语法使用help 'get'查看

    hbase(main):024:0> get'test','row1','fam1' 
    COLUMN                                     CELL                                                                                                                    
     fam1:a                                   timestamp=1504768075731, value=x00x00x00x00x00x00x00x02                                                          
    1 row(s) in 0.0690 seconds 
    hbase(main):026:0> get 'test','row1','fam1:a' 
    COLUMN                                     CELL                                                                                                                    
     fam1:a                                   timestamp=1504768075731, value=x00x00x00x00x00x00x00x02                                                          
    1 row(s) in 0.0430 seconds

    使用delete删除数据

    常用语法:delete '[namespacename:]tablename' , 'rowkey' , 'columnfamliyname:column'

    当表中存在只制定了columnfamily没有具体制定column的数据时,delete可以这么用

    delete '[namespacename:]tablename' , 'rowkey' , 'columnfamliyname',不存在这样的数据,使用这样的语句不会删除数据。

    更详细的语法使用help 'delete'查看

    hbase(main):008:0> delete'test','row1','fam1:a' 
    0 row(s) in 0.3370 seconds 
      
    hbase(main):009:0> scan 'test' 
    ROW                                       COLUMN+CELL                                                                                                             
     row1                                     column=fam2:a, timestamp=1504767471977, value=value                                                                      
     row2                                     column=fam1:a, timestamp=1504767600686, value=value                                                                      
     row2                                     column=fam2:a, timestamp=1504767715014, value=value                                                                      
    2 row(s) in 0.0850 seconds

    使用incr增加数据(默认使用counter实现递增)

    常用语法:incr '[namespacename:]tablename' , 'rowkey' , 'columnfamilyname:column'

    更详细的语法使用help 'incr'查看

    hbase(main):012:0> incr'test','row1','fam1:a' 
    COUNTER VALUE = 1
    0 row(s) in 1.1700 seconds 
      
    hbase(main):013:0> scan 'test' 
    ROW                                       COLUMN+CELL                                                                                                             
     row1                                      column=fam1:a,timestamp=1504768054892, value=x00x00x00x00x00x00x00x01                                           
     row1                                     column=fam2:a, timestamp=1504767471977, value=value                                                                       
     row2                                     column=fam1:a, timestamp=1504767600686, value=value                                                                      
     row2                                      column=fam2:a, timestamp=1504767715014,value=value                                                                      
    2 row(s) in 0.0410 seconds 
      
    hbase(main):014:0> incr'test','row1','fam1:a' 
    COUNTER VALUE = 2
    0 row(s) in 0.0480 seconds 
      
    hbase(main):015:0> scan 'test' 
    ROW                                       COLUMN+CELL                                                                                                             
     row1                                     column=fam1:a, timestamp=1504768075731,value=x00x00x00x00x00x00x00x02                                           
     row1                                     column=fam2:a, timestamp=1504767471977, value=value                                                                      
     row2                                     column=fam1:a, timestamp=1504767600686, value=value                                                                      
     row2                                     column=fam2:a, timestamp=1504767715014, value=value                                                                      
    2 row(s) in 0.0770 seconds

    使用get_counter查看当前的counter值:

    hbase(main):027:0> get_counter'test','row1','fam1:a' 
    COUNTER VALUE = 2

    使用put更新数据:

    hbase(main):029:0> scan 'test' 
    ROW                                        COLUMN+CELL                                                                                                             
     row1                                     column=fam1:a, timestamp=1504768075731,value=x00x00x00x00x00x00x00x02                                           
     row1                                     column=fam2:a, timestamp=1504767471977, value=value                                                                      
     row2                                     column=fam1:a, timestamp=1504767600686, value=value                                                                      
     row2                                     column=fam2:a, timestamp=1504767715014, value=value                                                                      
    2 row(s) in 0.0270 seconds 
      
    hbase(main):030:0> put'test','row1','fam1:a','newvalue' 
    0 row(s) in 0.0250 seconds 
      
    hbase(main):031:0> scan 'test' 
    ROW                                        COLUMN+CELL                                                                                                             
     row1                                     column=fam1:a, timestamp=1504768397480, value=newvalue                                                                    
     row1                                     column=fam2:a, timestamp=1504767471977, value=value                                                                      
     row2                                     column=fam1:a, timestamp=1504767600686, value=value                                                                      
     row2                                     column=fam2:a, timestamp=1504767715014, value=value                                                                      
    2 row(s) in 0.0760 seconds

    使用is_enabled/is_disabled查看表是否被启用/禁用

    hbase(main):032:0> is_enable 'test' 
    NoMethodError: undefined method `is_enable'for #<Object:0x15d114ce> 
      
    hbase(main):033:0> is_enabled 'test' 
    true                                                                                                                                                               
    0 row(s) in 0.1180 seconds 
      
    hbase(main):034:0> is_disabled 'test' 
    false                                                                                                                                                              
    0 row(s) in 0.0190 seconds

    使用disable禁用表

    hbase(main):001:0> disable 'test' 
    0 row(s) in 4.7170 seconds 
      
    hbase(main):002:0> is_disabled 'test' 
    true                                                                                                                                                               
    0 row(s) in 0.0210 seconds

    使用enbale启用表

    hbase(main):003:0> enable 'test' 
    0 row(s) in 2.2910 seconds 
      
    hbase(main):004:0> is_enabled 'test' 
    true                                                                                                                                                               
    0 row(s) in 0.0180 seconds

    删除fam1这个columnfamily:

    hbase(main):007:0> alter'test',{NAME=>'fam1',METHOD=>'delete'} 
    Updating all regions with the new schema...
    1/1 regions updated. 
    Done.
    0 row(s) in 2.1980 seconds 
      
    hbase(main):008:0> desc 'test' 
    Table test is ENABLED                                                                                                                                               
    test                                                                                                                                                               
    COLUMN FAMILIES DESCRIPTION                                                                                                                                        
    {NAME => 'fam2', BLOOMFILTER => 'ROW',VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE',DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRE 
    SSION => 'NONE', MIN_VERSIONS => '0',BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE =>'0'}                                                          
    1 row(s) in 0.0350 seconds

    清空表数据:

    hbase(main):009:0> truncate 'test' 
    Truncating 'test' table (it may take awhile): 
     -Disabling table... 
     -Truncating table... 
    0 row(s) in 3.6540 seconds 
      
    hbase(main):010:0> scan 'test' 
    ROW                                       COLUMN+CELL                                                                                                             
    0 row(s) in 0.0460 seconds

    删除表(必须先disable表才能drop表):

    hbase(main):011:0> disable 'test' 
    0 row(s) in 2.2680 seconds 
      
    hbase(main):012:0> drop 'test' 
    0 row(s) in 1.2680 seconds 
      
    hbase(main):014:0> list 'test' 
    TABLE                                                                                                                                                              
    0 row(s) in 0.0110 seconds 
      
    => []

    参考博客:

    https://blog.csdn.net/weixin_34234721/article/details/89806302

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  • 原文地址:https://www.cnblogs.com/xumaomao/p/11790709.html
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