hbase经常使用的shell命令样例

2024年1月18日 186次阅读来源: hbase

1、hbase shell 进入hbase [
hadoop@mdw ~]$
hbase shell

HBase Shell; enter ‘help<RETURN>’ for list of supported commands.

Type “exit<RETURN>” to leave the HBase Shell

Version 0.94.16, r1557241, Fri Jan 10 20:10:24 UTC 2014

2、whoami 查看当前訪问hbase的用户 hbase(main):001:0>
whoami hadoop

3、version 查看当前hbase的版本号信息 hbase(main):002:0>
version 0.94.16, r1557241, Fri Jan 10 20:10:24 UTC 2014

4、status 查看当前hbase的状态 hbase(main):003:0>
status 2 servers, 0 dead, 1.0000 average load 也能够通过添加參数查看，status ‘simple’ 查看简单的信息、status ‘summary’ 查看概要信息、status ‘detailed’ 查看具体信息

5、create 创建表 hbase(main):007:0>
create ‘member’,’member_id’,’address’,’info’ 0 row(s) in 1.1590 seconds

6、list 查看数据库中的表 hbase(main):008:0>
list TABLE member 1 row(s) in 0.0280 seconds

7、describe 表名查看表的信息 hbase(main):009:0>
describe member NameError: undefined local variable or method `member’ for #<Object:0x453c47> hbase(main):010:0> describe ‘member’ DESCRIPTION ENABLED ‘member’, {NAME => ‘
address‘, DATA_BLOCK_ENCODING => ‘NONE’, BLOOMF true ILTER => ‘NONE’, REPLICATION_SCOPE => ‘0’, VERSIONS => ‘3’, COMPRES SION => ‘NONE’, MIN_VERSIONS => ‘0’, TTL => ‘2147483647’, KEEP_DELE TED_CELLS => ‘false’, BLOCKSIZE => ‘65536’, IN_MEMORY => ‘false’, E NCODE_ON_DISK => ‘true’, BLOCKCACHE => ‘true’}, {NAME => ‘
info‘, DA TA_BLOCK_ENCODING => ‘NONE’, BLOOMFILTER => ‘NONE’, REPLICATION_SCO PE => ‘0’, VERSIONS => ‘3’, COMPRESSION => ‘NONE’, MIN_VERSIONS => ‘0’, TTL => ‘2147483647’, KEEP_DELETED_CELLS => ‘false’, BLOCKSIZE => ‘65536’, IN_MEMORY => ‘false’, ENCODE_ON_DISK => ‘true’, BLOCKCA CHE => ‘true’}, {NAME => ‘
member_id‘, DATA_BLOCK_ENCODING => ‘NONE’ , BLOOMFILTER => ‘NONE’, REPLICATION_SCOPE => ‘0’, VERSIONS => ‘3’, COMPRESSION => ‘NONE’, MIN_VERSIONS => ‘0’, TTL => ‘2147483647’, K EEP_DELETED_CELLS => ‘false’, BLOCKSIZE => ‘65536’, IN_MEMORY => ‘f alse’, ENCODE_ON_DISK => ‘true’, BLOCKCACHE => ‘true’} 1 row(s) in 0.0450 seconds hbase(main):011:0>

8、删除列族 删除列族
须要先禁用表，否则会报下面错误： hbase(main):006:0>
alter ‘member’,NAME=>’member_id’,METHOD=>’delete’ ERROR: org.apache.hadoop.hbase.TableNotDisabledException: org.apache.hadoop.hbase.TableNotDisabledException: member at org.apache.hadoop.hbase.master.HMaster.checkTableModifiable(HMaster.java:1525) at org.apache.hadoop.hbase.master.handler.TableEventHandler.<init>(TableEventHandler.java:72) at org.apache.hadoop.hbase.master.handler.TableDeleteFamilyHandler.<init>(TableDeleteFamilyHandler.java:41) at org.apache.hadoop.hbase.master.HMaster.deleteColumn(HMaster.java:1430) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:323) at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1426)

删除列族的正确方法：先禁用表： hbase(main):007:0>
disable ‘member’ 0 row(s) in 1.1690 seconds

然后删除列族(注意NAME和METHOD要大写)： hbase(main):008:0>
alter ‘member’,NAME=>’member_id’,METHOD=>’delete’ Updating all regions with the new schema… 1/1 regions updated. Done. 0 row(s) in 1.1640 seconds

删除列族之后再启用表： hbase(main):009:0>
enable ‘member’ 0 row(s) in 1.2250 seconds

再次查看表信息，便能够发现member_id已经被删除 hbase(main):010:0>
describe ‘member’ DESCRIPTION ENABLED ‘member’, {NAME => ‘
address‘, DATA_BLOCK_ENCODING => ‘NONE’, BLOOMFILTER => ‘NONE’, REPLICATION_SCOPE => ‘ true 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’}, {N AME => ‘
info‘, DATA_BLOCK_ENCODING => ‘NONE’, BLOOMFILTER => ‘NONE’, REPLICATION_SCOPE => ‘0’, VERSIONS => ‘3’, COMPRESSION => ‘NONE’, MIN_VERSIONS => ‘0’, TTL => ‘2147483647’, KEEP_DELETED_CELLS => ‘false’, BLOC KSIZE => ‘65536’, IN_MEMORY => ‘false’, ENCODE_ON_DISK => ‘true’, BLOCKCACHE => ‘true’} 1 row(s) in 0.0420 seconds

9、drop 表名删除表 删除表时也须要先将表disable，否则会报错。为方便先创建个暂时表(user表)。然后将user表删除
hbase(main):019:0> create ‘user’,’name’,’age’ 0 row(s) in 1.0900 seconds

没有禁用user表，直接删除，报下面错误： hbase(main):020:0>
drop ‘user’ ERROR: Table user is enabled. Disable it first.’ Here is some help for this command: Drop the named table. Table must first be disabled: e.g. “hbase> drop ‘t1′”

正确删除方法例如以下：先禁用表： hbase(main):021:0>
disable ‘user’ 0 row(s) in 1.1660 seconds 然后删除表： hbase(main):022:0>
drop ‘user’ 0 row(s) in 1.0710 seconds hbase(main):023:0>

10、exists 表名查看一个表是否存在
hbase(main):023:0>
exists ‘user’
Table user
does not exist 0 row(s) in 0.0230 seconds

hbase(main):024:0>
exists ‘member’
Table member
does exist 0 row(s) in 0.0750 seconds

11、is_enabled 推断表是否enable
hbase(main):025:0>
is_enabled ‘member’ true 0 row(s) in 0.0160 seconds

12、is_disabled 推断表是否disable
hbase(main):026:0>
is_disabled ‘member’ false 0 row(s) in 0.0220 seconds

13、put 插入数据 hbase(main):076:0>
put ‘member’,’xueba’,’info:age’,’25’ 0 row(s) in 0.0170 seconds

为了方便使用以下命令的，这里多插入一些数据：

put ‘member’,’xueba’,’info:age’,’25’

put ‘member’,’xueba’,’info:birthday’,’1989-06-19′

put ‘member’,’xueba’,’info:company’,’tecent‘

put ‘member’,’xueba’,’address:contry’,’china‘

put ‘member’,’xueba’,’address:province’,’guangdong‘

put ‘member’,’xueba’,’address:city’,’shenzhen‘

put ‘member’,’xiaoming’,’info:age’,’24’

put ‘member’,’xiaoming’,’info:birthday’,’1990-03-22′

put ‘member’,’xiaoming’,’info:company’,’tecent‘

put ‘member’,’xiaoming’,’info:favorite’,’movie‘

put ‘member’,’xiaoming’,’address:contry’,’china‘

put ‘member’,’xiaoming’,’address:province’,’guangdong‘

put ‘member’,’xiaoming’,’address:city’,’guangzhou‘

14、get 获取表数据 获取xueba的信息： hbase(main):090:0>
get ‘member’,’xueba’ COLUMN CELL address:city timestamp=1436932081705, value=shenzhen address:contry timestamp=1436932081662, value=china address:province timestamp=1436932081686, value=guangdong info:age timestamp=1436932081590, value=25 info:birthday timestamp=1436932081619, value=1989-06-19 info:company timestamp=1436932081642, value=tecent 6 row(s) in 0.0080 seconds

获取xiaoming的info信息： hbase(main):091:0>
get ‘member’,’xiaoming’,’info’ COLUMN CELL info:age timestamp=1436932081724, value=24 info:birthday timestamp=1436932081745, value=1990-03-22 info:company timestamp=1436932081764, value=tecent info:favorite timestamp=1436932081784, value=movie 4 row(s) in 0.0560 seconds

获取xiaoming的age信息 hbase(main):092:0>
get ‘member’,’xiaoming’,’info:age’ COLUMN CELL info:age timestamp=1436932081724, value=24 1 row(s) in 0.0060 seconds

15、put 更新记录 将xueba的age改为26： hbase(main):093:0>
put ‘member’,’xueba’,’info:age’,’26’ 0 row(s) in 0.0120 seconds 查看改动结果： hbase(main):094:0>
get ‘member’,’xueba’,’info:age’ COLUMN CELL info:age timestamp=1436932900139, value=26 1 row(s) in 0.0070 seconds

16、通过timestamp获取数据 hbase(main):099:0>
get ‘member’,’xueba’,{COLUMN=>’info:age’,TIMESTAMP=>1436936294957} COLUMN CELL info:age timestamp=1436936294957, value=26 1 row(s) in 0.0100 seconds

17、scan 表名全表扫描 hbase(main):101:0>
scan ‘member’ ROW COLUMN+CELL xiaoming column=address:city, timestamp=1436932131672, value=guangzhou xiaoming column=address:contry, timestamp=1436932081802, value=china xiaoming column=address:province, timestamp=1436932081821, value=guangdong xiaoming column=info:age, timestamp=1436932081724, value=24 xiaoming column=info:birthday, timestamp=1436932081745, value=1990-03-22 xiaoming column=info:company, timestamp=1436932081764, value=tecent xiaoming column=info:favorite, timestamp=1436932081784, value=movie xueba column=address:city, timestamp=1436932081705, value=shenzhen xueba column=address:contry, timestamp=1436932081662, value=china xueba column=address:province, timestamp=1436932081686, value=guangdong xueba column=info:age, timestamp=1436936294957, value=26 xueba column=info:birthday, timestamp=1436932081619, value=1989-06-19 xueba column=info:company, timestamp=1436932081642, value=tecent
2 row(s) in 0.0270 seconds 这里数据是2行，各自是xiaoming、xueba

18、delete 删除数据 删除xueba的age数据 hbase(main):102:0>
delete ‘member’,’xueba’,’info:age’ 0 row(s) in 0.0400 seconds 删除后查看xueba信息，已没有age数据 hbase(main):103:0>
get ‘member’,’xueba’ COLUMN CELL address:city timestamp=1436932081705, value=shenzhen address:contry timestamp=1436932081662, value=china address:province timestamp=1436932081686, value=guangdong info:birthday timestamp=1436932081619, value=1989-06-19 info:company timestamp=1436932081642, value=tecent 5 row(s) in 0.0160 seconds

19、deleteall 删除整行 删除xiaoming的数据： hbase(main):104:0>
deleteall ‘member’,’xiaoming’ 0 row(s) in 0.0100 seconds 查看删除情况。能够看出已没有xiaoming的数据 hbase(main):105:0>
get ‘member’,’xiaoming’ COLUMN CELL 0 row(s) in 0.0050 seconds

20、count 表名查询表中总共同拥有多少行数据 hbase(main):106:0>
count ‘member’ 1 row(s) in 0.0200 seconds 总共插入两行数据。上面将xiaoming的数据所有删除了。所以仅仅剩一行xueba的数据

21、truncate 表名清空表 hbase(main):107:0>
truncate ‘member’ Truncating ‘member’ table (it may take a while): – Disabling table… – Dropping table… – Creating table… 0 row(s) in 3.2460 seconds 通过上面信息能够看出。清空表的操作是先禁用表，然后删除表，再又一次创建表

    原文作者：hbase
    原文地址: https://www.cnblogs.com/lcchuguo/p/5406973.html
    本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。